EV Digest 5195
Topics covered in this issue include:
1) RE: Series Chargers
by Cor van de Water <[EMAIL PROTECTED]>
2) Re: Honda Civic Coefficient of Drag
by Don Buckshot <[EMAIL PROTECTED]>
3) RE: Big Bad Dumb Charger
by Cor van de Water <[EMAIL PROTECTED]>
4) Re: OT: major breakthrough in photovoltaics claimed
by "Peter VanDerWal" <[EMAIL PROTECTED]>
5) RE: Dragtimes Vote
by Mike & Paula Willmon <[EMAIL PROTECTED]>
6) Re: Useful Motor tech? Or Yet Another Fraud?
by Joel Hacker <[EMAIL PROTECTED]>
7) Re: Useful Motor tech? Or Yet Another Fraud?
by "Peter VanDerWal" <[EMAIL PROTECTED]>
8) Re: Go-Kart charging
by David Brandt <[EMAIL PROTECTED]>
9) re: I think I am going to need a lot of lead ...
by Steven Ciciora <[EMAIL PROTECTED]>
10) Re: Full size pickup
by "STEVE CLUNN" <[EMAIL PROTECTED]>
11) Re: ppt gen
by jerry halstead <[EMAIL PROTECTED]>
12) Small Bad Dumb Charger (was: RE: Big ...)
by "Christopher Tromley" <[EMAIL PROTECTED]>
13) Re: OT: major breakthrough in photovoltaics claimed
by Ken Trough <[EMAIL PROTECTED]>
14) Re: OT: major breakthrough in photovoltaics claimed
by "Mike Ellis" <[EMAIL PROTECTED]>
15) RE: Big Bad Dumb Charger
by "Bill Dennis" <[EMAIL PROTECTED]>
16) Re: OT: major breakthrough in photovoltaics claimed
by "Mike Ellis" <[EMAIL PROTECTED]>
17) White Zombie to Elude the Police this Saturday!
by John Wayland <[EMAIL PROTECTED]>
18) RE: White Zombie to Elude the Police this Saturday!
by "Matthew D. Graham" <[EMAIL PROTECTED]>
19) Re: White Zombie to Elude the Police this Saturday!
by "Mike Ellis" <[EMAIL PROTECTED]>
20) Re: Battery powered Trains, and hybrids
by "Bob Rice" <[EMAIL PROTECTED]>
21) Wayland's Hawker AeroBattery Info
by John Wayland <[EMAIL PROTECTED]>
--- Begin Message ---
Series-charging *can* be done, but it may be better
to hook up each charger to 1/2 of your string, though
it will be a challenge to make sure they are both set
to the same charge profile, or your string won't be
balanced any more....
Since I do not yet have a working onboard charger, I
use a stack of 5x 48V 15A supplies (each trimmed to 51V)
plus two 60V lab supplies that can be adjusted to a
max voltage and a max current.
First thing I do before hooking them up is to trim one
60V supply down from its max 64V to 38V (-26V) to change
the max voltage for the string from 14.8V to 13.8V
and allow the other lab supply set to 10A to use its
full 64V output range for current limiting, without
hitting the 0V (reversing this supply, effectively
killing the current limiting of this supply) when
the battery voltage is low upon connection to the
series of supplies.
Usually I start charging with my nominal 312V stack
of 26x 12V batteries at 330V or higher, but I have
drained them to 316V once.
The stack of supplies then pumps them with 10A
until they hit 359V and keep the voltage at that max
until the current has dropped way down.
I can then set the voltage back to max and adjust the
current to max 3A (under the C/30 rate, so the AGMs
won't gas out, they should be able to recombine this)
Maximum voltage they get is then 385V, then I assume
they are all up to their max voltage and after a
couple of minutes at this voltage, when the current
starts to taper off fast, I will disconnect the
power supplies first, then switch them off.
NOTE: make sure you fuse the connection between
the power supplies and pack.
Normal drive fuse is 250A so you can get about
100kW continuous without blowing it - that is an
amount of power to be scared about....
I use a 10A fast fuse.
You can use a PCF10 or PCS10 from Ferraz Shawmut
or something alike that is specified for DC and
at least 400V.
Regards,
Cor van de Water
Systems Architect
Email: [EMAIL PROTECTED] Private: http://www.cvandewater.com
Skype: cor_van_de_water IM: [EMAIL PROTECTED]
Tel: +1 408 542 5225 VoIP: +31 20 3987567 FWD# 25925
Fax: +1 408 731 3675 eFAX: +31-87-784-1130
Proxim Wireless Networks eFAX: +1-610-423-5743
Take your network further http://www.proxim.com
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Behalf Of Lee Hart
Sent: Monday, February 20, 2006 10:57 PM
To: ev@listproc.sjsu.edu
Subject: Re: Series Chargers
Bill Dennis wrote:
> If you've got two or more of the same isolated charger, all putting
> out the same amps, each of which is less than your pack voltage, are
> then an issues with stringing their DC outputs in series? Are there
> pros and cons to do that vs. splitting them across the pack instead
> (i.e., some number of cells on each charger)?
You can series and parallel power supplies to get more voltage or
current. It's straightforward in principle, and fairly easy with simple
"dumb" supplies.
But things can get entertaining if the supplies are "smart", i.e. have
regulated outputs. Then you can have problems getting them to
synchronize and agree on what they are doing.
You have to think about what will happen if one shuts off and the other
keeps running. Will the "on" one force current to keep flowing through
the "off" one? If so, this can reverse the polarity of the "off" one's
output, and blow its output capacitors or other circuitry.
When two supplies are independently trying to regulate voltage or
current, they can get into "fights" with each other. The resulting
voltage can become unstable or oscillate.
It's usually simpler to use each supply to charge half the battery
string independently. But if you do, provide some test mechanism to
insure that you will know if one quits and the other keeps working;
otherwise you could try to drive off in the morning with half your pack
uncharged!
--
Ring the bells that still can ring
Forget the perfect offering
There is a crack in everything
That's how the light gets in -- Leonard Cohen
--
Lee A. Hart, 814 8th Ave N, Sartell MN 56377, leeahart_at_earthlink.net
--- End Message ---
--- Begin Message ---
This is a good question for the maxmpg list at ...
http://groups.yahoo.com/group/maxmpg/
Some people there who are really into the aerodynamics of vehicles
including covering the underside!
Don
Dmitri Hurik wrote:
I was looking at a 1998 Honda Civic DX Sedan lets say. I'm having a hard time
finding reliable or accurate cd numbers. I saw some say .30, some even say
.38!! Anybody know what would be the approximate drag coefficient for this car?
Also, how low can I get this number by modifications such as a belly pan and
others?
--- End Message ---
--- Begin Message ---
One of the reasons the performance of an IGBT is somewhere
between a FET and a transistor is because it can be considered
as a combination of a FET driving a bipolar transistor, this is
why it has the insulated gate (from the FET) which drives the
bipolar transistor.
More details about the equivalent schematic and the operation
of an IGBT can be found here:
http://www.elec.gla.ac.uk/groups/dev_mod/papers/igbt/igbt.html
Regards,
Cor van de Water
Systems Architect
Email: [EMAIL PROTECTED] Private: http://www.cvandewater.com
Skype: cor_van_de_water IM: [EMAIL PROTECTED]
Tel: +1 408 542 5225 VoIP: +31 20 3987567 FWD# 25925
Fax: +1 408 731 3675 eFAX: +31-87-784-1130
Proxim Wireless Networks eFAX: +1-610-423-5743
Take your network further http://www.proxim.com
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Behalf Of Joe Smalley
Sent: Monday, February 20, 2006 10:02 PM
To: ev@listproc.sjsu.edu
Subject: Re: Big Bad Dumb Charger
IGBT is the abbreviation for "Insulated Gate Bipolar Transistor."
It is a less expensive, more lossy, higher voltage and slower switching
relative of the MOSFET.
The performance gap is closing, therefore there is less performance
difference now than in the past.
Joe Smalley
Rural Kitsap County WA
Fiesta 48 volts
NEDRA 48 volt street conversion record holder
[EMAIL PROTECTED]
----- Original Message -----
From: "paul wiley" <[EMAIL PROTECTED]>
To: <ev@listproc.sjsu.edu>
Sent: Monday, February 20, 2006 7:29 PM
Subject: Re: Big Bad Dumb Charger
>
>
> Rich Rudman wrote:
>
> 1 or more large IGBTs and a freewheeling diode and a Large inductor.
>
> Sorry to ask, but what is IGBT?
>
>
>
> ---------------------------------
> Relax. Yahoo! Mail virus scanning helps detect nasty viruses!
>
--- End Message ---
--- Begin Message ---
Looks like a Tilley to me.
The article is all fluff and no substance. The German company that
supposedly invested R500 million, doesn't seem to exists. At least I
couldn't find any German companies called IFE Solar Systems. You would
think that a company big enough to invest that much money would have been
in the news somewhere wouldn't you?
In fact I couldn't find ANY companies called IFE SOlar Systems. There is a
Norwegian institution called Institute for Energy Technology (IFE), but
they do research not production, and their website doesn't mention this
anyway.
The proffesor that supposedly led the research team doesn't seem to have
EVER done anything else. I googled him and the only results were other
"News" articles about this. If you google me you'll find stuff I've done
that dates back to before the WWW, how did this guy (a "Professor" no
less) manage to fly under the radar until now?
I did a search of the University of Johannesburg's website, no mention of
this professor or this "Breakthrough". The University is, however,
hosting a Hockey coaching course and Prof. Nic Beukes has put "Africa on
the Map" by being selected as the "SEG Regional Vice President Lecturer
for 2006." So perhaps this was overshadowed by more important news.
All in all, it looks like an investment scam to me.
>
> Sounds good. Here-
> http://www.int.iol.co.za/index.php?set_id=1&click_id=143&art_id=vn20060211110132138C184427
> ...
>
>
>
>
> Roy LeMeur Olympia, WA
>
> My EV and RE Project Pages-
> http://www.angelfire.com/ca4/renewables/evpage.html
>
> Informative Electric Vehicle Links-
> http://www.angelfire.com/ca4/renewables/evlinks.html
>
>
--
If you send email to me, or the EVDL, that has > 4 lines of legalistic
junk at the end; then you are specifically authorizing me to do whatever I
wish with the message. By posting the message you agree that your long
legalistic signature is void.
--- End Message ---
--- Begin Message ---
Matt,
So how does this work? Roderick and you are #1 and #2 right now however the
WZ is still racking up votes. It seems everyone carried over their votes
from the previous month and the featured car is still accumulating. What
happens when WZ is succeedded by one of you? Does he go perpetually into
the "Past Featured Caor of the Month" page? Will he be able to repost
another time slip and run the gamut again?
I agree that seeing more electric timeslips on their board would be cool. I
think keeping the slow steady creep of a few votes a day looks more legit
than one time 500 vote increases. I'm sure others on the board watch the
numbers and notice the large jumps as well. I've read a little on their
forums and they have a thread that talked about this subject. Having a raw
consistent votership goes a long way to proving legitimacy, just like the
raw consistent torque layed out on the track. No one can argue repeatable
results. And heck, some like it and you may get some converts on the
dragstrip.
Just a side note, the guy I bought my batteries from has a kid in his shop
big into drag racing. He asked when I was paying for my batteries if
electric would make a good dragster....just pointed him to DragTimes.com :-)
I'll check back with him when I get my truck finished and see if you guys
hooked him.
Mike,
Anchorage, Ak.
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Behalf Of Matthew D. Graham
Sent: Monday, February 20, 2006 9:13 AM
To: 'ev@listproc.sjsu.edu'
Subject: RE: Dragtimes Vote
Hey everyone,
I'm really happy to see the balanced views on this topic. Brooks' website
and our voting efforts have done a great job of raising awareness of EVs.
Then again, too much "EVs-in-your-face" could lead to a little resentment.
I'm not particularly worried about thin skin on the other racers, but from
the beginning I was concerned about EVs appearing like a flash in the pan.
Having our EVs in the top 10 for as long as they've been has been great. But
what an accomplishment it would be if there were at least one up there on
the "recent" or "top 10" lists for the whole year and beyond! I know there
are some incredible EVs in the works right now, and I can't wait to see how
they perform.
I wanted to let you all know that I got an email back from Brooks today
after I asked about the Audi and the short-lived "sponsor votes" feature. He
indicated that no one had actually used that feature to move up in the
standings, and that he doesn't think he'll be using it after all. I actually
got the impression that he was irritated about the Audi, but he confirmed
that those votes all came from different IP addresses. He couldn't find any
forums promoting the Audi, so I think he'll keep his eyes out for any other
suspicious voting flurries.
I told him I wouldn't be heartbroken if the 240 didn't make car of the month
for March since I still wasn't into the 12s with it. His advice to me:
"You've got 8 more days to make it into the 12s!" Nothing like a deadline to
speed up car repairs!
Matt Graham
300V "Joule Injected" Nissan
http://www.jouleinjected.com
Hobe Sound, FL
-----Original Message-----
From: Roderick Wilde [mailto:[EMAIL PROTECTED]
Sent: Sunday, February 19, 2006 11:29 AM
To: ev@listproc.sjsu.edu
Subject: Re: Dragtimes Vote
Oat, you have a good point and your logic is sound. It could cause some
negative feelings about EV drag cars. On the flip side of the coin the
original intent was to bring about the awareness that EV drag racing
actually exists. Most people I talk to are amazed to find this out. The
other good thing to come out of all of this is that the webmaster has put up
a whole new page to showcase EV drag cars. Without the number of electrics
currently on the site it would not have warranted a separate page at all.
This I feel is a very significant gain for creating an awareness of EV drag
racing and EVs in general. This page will most likely exist even after there
are no EVs in the top 100. I say mission accomplished and now we can get
back to the battle :-)
Roderick Wilde
----- Original Message -----
From: "Otmar" <[EMAIL PROTECTED]>
To: <ev@listproc.sjsu.edu>
Sent: Saturday, February 18, 2006 3:48 PM
Subject: Re: Dragtimes Vote
> At 8:39 AM -0800 2/18/06, John Wayland wrote:
> .....
>>I vote every day for the EVs, and sure wish all who voted regularly and
>>propelled White Zombie to the number one spot, would do the same for our
>>EV friends fighting for next month's honor.
>
> Am I the only one that thinks that three months of EV's in a row might be
> boring to those not into EV's?
>
> I'm all for having EV's in the top spot every now and then, but too often
> and I think it reduces the effectiveness. I would think that the gassers
> would think we have taken over the site (as our large numbers certainly
> can) and then they might not go there as often.
>
> I for one am going to wait a couple months, then we can try for #1 again.
> Just my 20 milliwatts.
> --
> -Otmar-
>
> http://www.CafeElectric.com/
> The Zilla factory has moved to Corvallis Oregon.
> Now accepting resumes. Please see:
> http://www.cafeelectric.com/jobs.html
>
>
>
>
> --
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.1.375 / Virus Database: 267.15.11/264 - Release Date: 2/17/2006
>
>
--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 267.15.11/264 - Release Date: 2/17/2006
--- End Message ---
--- Begin Message ---
I have read seveal articles like this, and one thing that
they all have in common is the use of permanent magnets
with poles arranged so that they are similar and oppose
one another.
This creates some enormous magnetic fields that can be
interrupted by electric currents, or other dynamic lines
of flux to bend and warp the original lines of flux into
useful work...normally, the field lines are so strong
since they are opposing fields that they have great amounts
of energy and do great amounts of work...this is how I believe
that they get their overunity to work.
Here are some other good links...
http://www.rexresearch.com/johnson/1johnson.htm
http://jnaudin.free.fr/html/johnmot.htm
http://jnaudin.free.fr/meg/megv21.htm
John G. Lussmyer wrote:
http://www.opensourceenergy.org/txtlstvw.aspx?LstID=005f1c72-43ec-4bba-a318-90b4c7a3ef71
"ould a recent development in electromagnetism spur a revolution in
electric motor technology, providing true over unity with nothing more
exotic than a pair of permanent magnets? "
With the mention of Over Unity, I'd say fraud.
--
John G. Lussmyer mailto:[EMAIL PROTECTED]
Dragons soar and Tigers prowl while I dream....
http://www.CasaDelGato.com
--- End Message ---
--- Begin Message ---
> I have read seveal articles like this, and one thing that
> they all have in common is the use of permanent magnets
> with poles arranged so that they are similar and oppose
> one another.
>
> This creates some enormous magnetic fields that can be
> interrupted by electric currents, or other dynamic lines
> of flux to bend and warp the original lines of flux into
> useful work...normally, the field lines are so strong
> since they are opposing fields that they have great amounts
> of energy and do great amounts of work...this is how I believe
> that they get their overunity to work.
The reason they all use permanent magnets is because gullible people
usually don't know the difference between force and energy.
Magnetic fields do NOT contain energy they contain FORCE, which is an
entirely different animal.
Force is part of energy, but only part.
Force x distance = power.
Power x time = energy.
or
Energy = Force x distance x time.
You can't get energy from force without the movement.
All the magnetic field does (regardless of how strong they are) is allow
you to do is convert one type of power/energy into another. I.e. from
mechanical power to electrical power or vice versa.
As for this "developement"? Wow, putting permanent magnets inside motors,
why didn't someone else think of that. Oh yeah, they did...about two
centuries ago.
Looking at their design (looks like a switched reluctance motor) I'd guess
that it will be somewhat LESS efficient than a decent brushless PM motor.
--
If you send email to me, or the EVDL, that has > 4 lines of legalistic
junk at the end; then you are specifically authorizing me to do whatever I
wish with the message. By posting the message you agree that your long
legalistic signature is void.
--- End Message ---
--- Begin Message ---
Thanks for the input, everyone. Mike, I think I'll pass on those C & D
units, but thanks.
It just occurred to me that I've still got my old "brute force charger"
that I used 2 states ago. I think I'll rework it to use 120V (the
garage I'm in now doesn't have 240V). It'll be way overkill, but it
should do the job. Figures - I just started to cannabalize it for
parts, too.
If that falls through (the 50 lb. variac was dropped by the movers
during the first move - have to verify it still works), I may go the
relay route.
David Brandt
__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
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--- End Message ---
--- Begin Message ---
What kind of life did you get out of your batts with
that commute?
Thanks,
Steve
--- Jimmy Argon <[EMAIL PROTECTED]> wrote:
> Steve,
> Here is some data:
> I drove the Voltbuggy 45 miles round trip to work
> for a couple years.
> (23) 6v t125s, in summer I could do it with a couple
> miles to spare (avg
> temp 90F) In the winter 1/2 mile short normal
> driving (had to conserve in
> winter - avg temp 50F). The pack was strung for
> 138v used on GE 90 v
> motor. The pack weight was 1556lb the total vehicle
> wt 2930lb. P/W
> (Power wt ratio or batt wt/total wt) was 53%. This
> was a minimum set up
> for 45 miles, lots of stop and go at the time, no
> regen.
>
> I would figure you need (23) if your P/W is the
> same, since it is probably
> less, and you dont have regen you need (25)T125s.
> Just a WAG Good Luck,
> Jimmy
> http://www.dm3electrics.com
>
> >From: [EMAIL PROTECTED]
>
> >When I started planning this EV project, I had a
> 6.5 mile (13 mile round
> >>that
> >commute, I determined that 14 x 6 V = 84 V in the
> Festiva would be
> >sufficient.
>
> >Any suggestions?
>
> >Steve
> >Atlanta, GA
>
>
__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
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--- End Message ---
--- Begin Message ---
----- Original Message -----
From: "James McKethen" >
I would like to build a full size pickup truck. From the frame up and
build
it right. I am going to strip an older full size truck down to the frame.
You didn't how fast or far you are looking for . It would be easy to load
it up with golf cart batteies , maybe 50 of them and a 11 inch motor . 300v
zilla . This would make up for the weight difference.
And begin there. I want it to make a statement.
like his ? http://www.go-ev.com/images/Steve_Clunn.mov.
I am going to lower it and
replace most of the bodywork with fiberglass components to lower the
weight.
knowing the projected weight would would help
I want to get some ideas from the group on what they would recommend. I
would like to be able to take it to the track, shows, and schools to show
what can be done.
How much money are you willing to spend on the drive ?
I am open to any and all suggestions.
Tell us more about what your looking for
Steve Clunn
Regards,
James Mckethen
--- End Message ---
--- Begin Message ---
/. has a thread on the parallel path tech, uh, "story":
http://hardware.slashdot.org/article.pl?sid=06/02/21/0038217
Someone provided a link to a non-perpetual energy motor, called
thingap. Anyone hear of them before?
http://www.thingap.com/technology.htm
-Jerry
http://www.evconvert.com/
--- End Message ---
--- Begin Message ---
Mike Chancey wrote:
> Has anyone ever looked into building a high power stupid charger for
> fast recharging?
Hi Mike,
Several good responses to this, but my interest is a little different.
I like the idea of a charger that only has to worry about bulk charging,
since that allows a very simple, cheap and *small* solution - something
that EM (electric motorcycle) builders could use. I can see something
like this being used as a compact emergency charger on a car or truck as
well.
Keep in mind I am the most clueless of electrical dunces, but I was
thinking in terms of a rectifier, fuse, fan and some means of switching
it off at your predetermined acceptance voltage. Since it's for a known
load could it be tweaked for a better power factor? Just because it's
cheap and small doesn't mean it shouldn't be reliable, so you'd need a
timer too. And since it's not isolated, a GFI is mandatory.
Which brings up a problem. For an EM with all its guts hanging out
there inviting finger-pokers, how do you get redundant protection? Two
GFIs?
I look forward to more discussion on this from those who have a clue.
:-)
Chris
--- End Message ---
--- Begin Message ---
http://tinyurl.com/n56bj
Looks like a Tilley to me.
You might want to take another look. This is the real deal and many
people such as myself have been following this tech for years now. There
is tons of data available. Granted, the university site is not that deep
or detailed, but the data is available if you dig a little.
The proffesor that supposedly led the research team doesn't seem to
have EVER done anything else. I googled him and the only results were
other "News" articles about this.
Simply entering a name in Google will not give you a detailed search.
Most tech journals are not published online and are not Google
searchable. Professor Alberts has worked all over the world. I came up
with reams of data that professor Alberts has published in:
Semiconductor Science and Technology 8(1993)
Journal of Materials Science: Materials in Electronics 5(1994)
Japanese Journal of Applied Physics 33(1994)
Journal of Applied Physics 81(1997)
Semiconductor Science and Technology 12(1997)
Japanese Journal of Applied Physics 36(1997)
Journal of Physics D: Applied Physics 30(1997)
and at least >15 more< major articles published in global physics
journals since 1997
I did a search of the University of Johannesburg's website, no mention
of this professor or this "Breakthrough".
He is listed as the Chairman in the Department of Physics, the
photovoltaic research is prominately listed and Volkswagen Foundation in
Germany is listed as providing considerable financial support in
addition to the National Research Foundation.
The University is, however, hosting a Hockey coaching course and Prof.
Nic Beukes has put "Africa on the Map" by being selected as the "SEG
Regional Vice President Lecturer for 2006." So perhaps this was
overshadowed by more important news.
Maybe you should look at the physics department and not the sports
pages. 8^)
All in all, it looks like an investment scam to me.
Far from it. This is a major breakthrough that MANY people are watching
closely. The South African national minister of Science and Technology
was on hand to officially open the pilot production facility in 2004,
and now this tech is finally going into actual production. Hooray!
My favorite quote from the professor:
"The most expensive part of the panel is the glass". He is talking about
normal window glass, nothing exotic. His PV film is thinner than a human
hair and super cheap to produce.
Hope this helps!
-Ken Trough
V is for Voltage
http://visforvoltage.com
AIM/YM - ktrough
FAX/voice message - 206-339-VOLT (8658)
--- End Message ---
--- Begin Message ---
Did you try google scholar, or other methods of searching journal
publications? Here are some Google Scholar and Science Direct results.
THE EFFECT OF TEMPERATURE, TIME AND GAS FLOW RATE ON THE GROWTH AND
CHARACTERIZATION OF Cu (In, Ga) … - group of 4 »
EK Ejigu - 2004 - etd.uj.ac.za
... FACULTY OF SCIENCE at the RAND AFRIKAANS UNIVERSITY Supervisor:
Doctor CA Engelbrecht
Co Supervisor: Professor Vivian Alberts December 2004 Page 2. 1 CHAPTER 1 ...
Photoluminescence Study of GaAs Grown on (001) Si - group of 2 »
V Alberts - Jpn. J. Appl. Phys, 1994 - jjap.ipap.jp
... 001) Si. Vivian Alberts. Department of Physics, Rand Afrikaans University,
PO Box 524, Auckland Park 2006, Johannesburg, South Africa ...
Cached - Web Search - BL Direct
My grateful thanks and gratitude to:
CJ Sheppard - etd.rau.ac.za
... My supervisor, Professor Vivian Alberts, for the many discussions,
help, advice
and guidance. ... To the Department of Physics at the Rand Afrikaans
University for ...
View as HTML - Web Search
Atomic force microscopy imaging of polycrystalline CuInSe - group of 2 »
V ALBERTS, KT HILLIE, CM DEMANET - blackwell-synergy.com
... V. ALBERTS*, KT HILLIE² & CM DEMANET² *Department of Physics, Rand
Afrikaans University,
PO Box ... Fax: +27 11 489 2339; e-mail: vivian.alberts @uni-konstanz.de ...
Web Search
Homogeneity of single phase Cu(In,Ga)Se2 produced by selenisation of
metal precursors: An optical investigation • ARTICLE
Thin Solid Films, In Press, Corrected Proof, Available online 4 January 2006,
J.R. Botha, S.A. Schumacher, A.W.R. Leitch and V. Alberts
Synthesis of homogeneous pentenary chalcopyrite alloys with a
classical two-step growth process • ARTICLE
Journal of Physics and Chemistry of Solids, Volume 66, Issue 11,
November 2005, Pages 1880-1882
F.D Dhlamini and V. Alberts
>how did this guy (a "Professor" no less) manage to fly under the
radar until now?
Lots of current research in scholarly journals doesn't make google. A
science student at a major university who tries to do a research paper
using only resources he or she can find using google will get at best
a D. My university's web site is, unfortunately, down at the moment or
I would search some of our databases as well. Also, and this is only
speculation, the pages on this guy might be in afrikaans, not
english...
-Mike
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Look back in the archives for the word "Cogeneration?" in the Subject within
the last year or so, with some good replies from Lee Hart. My idea for this
exact same thing was to heat the house and charge the car at the same time.
Lee suggested that I could alternatively heat the domestic hot water, too.
Basically, I considered getting some electric baseboard heaters and putting
them in parallel to achieve the amperage that I wanted (I think each heater
was 12A or 15A) and had a fairly constant resistance. These were put in
series with a bridge rectifier, a large inductor, and the battery pack.
The whole thing was plugged into a 220V outlet. When my pack was near
empty, around 100V, then 120V would be dropped across the heating elements.
As the pack charged, the amps would taper off as less and less voltage was
dropped across the heating elements. A simple voltage comparator or timer
could turn the apparatus off at 80% SOC.
Bill Dennis
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On 2/21/06, Peter VanDerWal <[EMAIL PROTECTED]> wrote:
> I did a search of the University of Johannesburg's website, no mention of
> this professor or this "Breakthrough". The University is, however,
> hosting a Hockey coaching course and Prof. Nic Beukes has put "Africa on
> the Map" by being selected as the "SEG Regional Vice President Lecturer
> for 2006." So perhaps this was overshadowed by more important news.
I did, too, and found his page
http://www.uj.ac.za/physics/index.asp?page=detail&id=3406
Prof V. Alberts
Prof V. Alberts
Professor
Tel: (011) 489 2844
E-mail: [EMAIL PROTECTED]
Academic Qualifications
1985: B.Sc. - University of Port Elizabeth
1986: Honours - University of Port Elizabeth
1990: M.Sc. - University of Port Elizabeth
1993: Ph.D. - University of Port Elizabeth
Academic Career and Appointments
1990: Junior lecturer, Department of Physics, UPE
1993: Lecturer, Department of Physics, RAU
1995: Senior lecturer, Department of Physics, RAU
1997: Associated professor, Department of Physics, RAU.
1999: Guest professor, Department of Physics, University of Konstanz
2000: Associate professor and Deputy-Chairman, Department of Physics, RAU
2001: Appointed as professor and Chairman in the Department of Physics at RAU
Experience as Researcher in Laboratories Abroad
1995: Post Doc Fellow at the University of Stuttgart, Germany
1996: Post Doc Fellow at the Universities of Konstanz, Germany
1998: Senior Scientist at the University of Konstanz
1999: Project Leader, Photovoltaic Group, University of Konstanz
2000: Invited Professor, University of Konstanz
Research Interests
I strongly believe in the future of alternative energy sources,
particularly the direct conversion of sunlight into electricity. As
project leader of the photovoltaic research group at RAU, my current
research interest is focussed on the research and development of a
variety of semiconductors thin films for solar cell applications.
Attention is mainly focussed on the growth and characterization of
polycrystalline ternary and quaternary semiconductors such as CuInSe2
and Cu(In,Ga)Se2. Besides conducting fundamental material research,
the group has also developed the unique ability to produce and
evaluate completed solar cell devices and mini-modules. This applied
field of physics is relevant from an academic as well as an industrial
point of view. The group actively collaborates with various national
and international groups and receives financial support from the NRF
and Volkswagen Foundation in Germany.
List of Representative Publications
V. Alberts
Influence of thermal annealing and the incorporation of AlGaAs/GaAs
superlattices on the structural and optical properties of GaAs on Si
Semiconductor Science and Technology 8 (1993) 2125
V. Alberts
Initial stages of organometallic-vapour-phase epitaxial AlGaAs grown on (001) Si
Journal of Materials Science: Materials in Electronics 5 (1994) 291
V. Alberts
Photoluminescence study of GaAs grown on (001) Si
Japanese Journal of Applied Physics 33(11) (1994) 6111
J.H. Schön, V. Alberts and E. Bucher
Sharp optical emissions from Cu-rich polycrystalline CuInSe2 thin films
Journal of Applied Physics 81(6) (1997) 2799
V. Alberts, S. Zweigart and H.W. Schock
Preparation of device quality CuInSe2 by selenization of Se containing
precursors in H2Se atmosphere
Semiconductor Science and Technology 12 (1997) 217
V. Alberts, S. Zweigart, J.H. Schön, H.W. Schock and E. Bucher
Characterization of Polycrystalline Cu(In,Ga)Se2 thin films
Japanese Journal of Applied Physics 36(8) (1997) 108
V. Alberts, R. Heberholz, T. Walter and H.W. Schock
Device Characteristics of In-rich CuInSe2-based Solar Cells
Journal of Physics D: Applied Physics 30(15) (1997) 2156
V. Alberts, M.J. Witcomb and R. Swanepoel
Material properties of CuInSe2 prepared by H2Se treatment of metallic alloys
Journal of Material Science 33 (1998) 2919
V. Alberts, J.H. Schön, M.J. Witcomb, E. Bucher, U. Rühle and H.W. Schock
Preparation of Cu(In,Ga)Se2 polycrystalline thin films by two-stage
selenization processes using H2Se/Ar gas
Journal of Physics D: Applied Phys. 31(20) (1998) 2869
V. Alberts, J.H. Schön and E. Bucher
Improved material properties of polycrystalline CuInSe2 prepared by
rapid thermal treatment of metallic alloys in H2Se/Ar
Journal of Applied Physics 84(12) (1998) 6881
V. Alberts, J.H. Schön and E. Bucher
Material properties and growth mechanism of CuInSe2 prepared by H2Se
treatment of metallic alloys
Journal of Materials Science: Materials in Electronics 10 (1999) 469
J.H. Schön, V. Alberts and E. Bucher
Control and passivation of VSe defect levels in H2Se selenized CuInSe2
Semiconductor Science and Technology 14 (1999) 657
V. Alberts and M.L. Chenene
In-depth compositional uniformity of CuInSe2 prepared by two-stage
growth sequences.
Journal of Physics D: Applied Physics 32 (1999) 3093
V. Alberts, J. Bekker, M.J. Witcomb, J.H. Schön and E. Bucher
Control of VSe defect levels in CuInSe2 prepared by rapid thermal
processing of metallic alloys
Thin Solid Films 361 (2000) 432
V. Alberts, K.T. Hillie and C.M. Demanet
Atomic force microscopy imaging of polycrystalline CuInSe2 thin films
Journal of Microscopy 197 (2000) 296
V. Alberts and P. Molefe
Formation of CuInSe2 thin films by H2Se/Ar treatment of thermally
evaporated metallic precursors from a single crucible
Japanese Journal Applied Physics 39 (2000) 1650
V.Alberts, M.Chenene, O.Schenker, E.Bucher
Preparation of CuInSe2 thin films by rapid thermal processing of
Se-containing precursors
Journal of Material Sciences: Materials in Electronics 11 (2000) 285
V.Alberts, M.Klenk and E.Bucher
Material losses and compositional changes in two-step processed
CuInSe2 thin films
Japanese Journal Applied Physics 39 (2000) 1099
V. Alberts, M. Klenk and E. Bucher
X-ray fluorescence investigation of Ga distribution in Cu(In,Ga)Se2 thin films
Solar Energy Materials and Solar Cells 64 (2000) 371
M. Klenk, V. Alberts, O. Schenker and E. Bucher
Compositional Analysis of two-step processed chalcopyrite thin films
by X-ray fluorescence
Applied Surface Science 173 (2001) 62-68
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Hello to All,
On the heels of our 4 day whirlwind Rod & Custom show, Tim and I are at
it again this coming Saturday, when we drive White Zombie down to PIR
and be as bad as we can be! With a special invite from the police, White
Zombie will be allowed to dice it out with the cops at their driver's
training program (closed to the public all day). This is the driving
school where cops learn to chase the bad guys and deal with outlaws
attempting to elude...sounds perfect! White Zombie will roast its tires
and drag race police cars, as the officers turn on their lights and
sirens in hot pursuit.... all the while at least one video camera will
be rolling!
It should be one heck of a photo shoot!
See Ya.......John Wayland
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Oh come on, John!! Are you kidding us?? You lead a charmed life, my friend.
Just when I think, "it can't get any better" you go ahead and pull off this
stunt! Great publicity AND you get to play cops and robbers?
Congratulations!!
Matt Graham
-----Original Message-----
From: John Wayland [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 21, 2006 9:50 AM
To: ev@listproc.sjsu.edu
Subject: White Zombie to Elude the Police this Saturday!
Hello to All,
On the heels of our 4 day whirlwind Rod & Custom show, Tim and I are at it
again this coming Saturday, when we drive White Zombie down to PIR and be as
bad as we can be! With a special invite from the police, White Zombie will
be allowed to dice it out with the cops at their driver's training program
(closed to the public all day). This is the driving school where cops learn
to chase the bad guys and deal with outlaws attempting to elude...sounds
perfect! White Zombie will roast its tires and drag race police cars, as the
officers turn on their lights and sirens in hot pursuit.... all the while at
least one video camera will be rolling!
It should be one heck of a photo shoot!
See Ya.......John Wayland
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Sounds great!
How does WZ handle, BTW?
-Mike
On 2/21/06, John Wayland <[EMAIL PROTECTED]> wrote:
> Hello to All,
>
> On the heels of our 4 day whirlwind Rod & Custom show, Tim and I are at
> it again this coming Saturday, when we drive White Zombie down to PIR
> and be as bad as we can be! With a special invite from the police, White
> Zombie will be allowed to dice it out with the cops at their driver's
> training program (closed to the public all day). This is the driving
> school where cops learn to chase the bad guys and deal with outlaws
> attempting to elude...sounds perfect! White Zombie will roast its tires
> and drag race police cars, as the officers turn on their lights and
> sirens in hot pursuit.... all the while at least one video camera will
> be rolling!
>
> It should be one heck of a photo shoot!
>
> See Ya.......John Wayland
>
>
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----- Original Message -----
From: "Danny Miller" <[EMAIL PROTECTED]>
To: <ev@listproc.sjsu.edu>
Sent: Monday, February 20, 2006 3:59 PM
Subject: Re: Battery powered Trains, and hybrids
> That first brings to mind the classic "monorail" Simpson's episode, when
> the monorail starts running wild someone says "we can't turn it off-
> it's solar powered." And Leonard Nimoy's character laments, in classic
> sci-fi commentary fashion on the hubris of science- "Solar power- when
> will they ever learn?"
> But nobody sez" But wait 'til the sun goes down and it is dark", a fairly
predictable phoenomon, almost EVerywhere<g>!
Seeya
Bob
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Ryan Bohm wrote:
I didn't see any answer to this question either. So right now,
Aerobatteries are just a John Wayland special product :) So John,
where can these things be bought and for how much?
Sorry to be so late in answering this and other emails. The big car show
this past weekend sucked up 4 days of my life.
The nice folks at Hawker Aerobatteries can be reached here:
http://www.aerobatteries.com/
The web page needs to be updated, as the battery spec page has errors as
someone else pointed out already, but the phone number and the sales
email are listed. They are located in Texas:
Aerobatteries L.P.
309 Airport Dr.
Tyler, Texas 75704
903-592-2176
The Aerobattery is not just a rebadged Odyssey model PC925, though it
'is' a very close cousin to it. Aerobatteries are made by Hawker's
aerospace and military division and come off a completely different
assembly line than do the Odyssey models. Mine were ordered minus the
steel case and are just 24 lbs. each. Hawker has many versions of their
batteries with various names and labels. Aerobatteries however, 'only'
come from the best quality military spec batteries, so you know the
batteries you get from them are top notch. The mil spec aerospace
batteries are made with different construction materials to increase
resistance to damaging vibration, and, they have to pass more stringent
testing to make it out the door. I've been told that Hawker only uses
the highest purity lead for the plates in the mil spec versions, too.
Hawkers are never inexpensive and are priced higher than other batteries
an EVer can choose, but the name Hawker is synonymous with 'tough as
nails'. I've never seen a small AGM type lead acid battery take the kind
of punishment the compact Hawkers can withstand. I've also, not seen
other AGMs stay so well equalized in high voltage series strings the way
Hawkers do. Lastly, the Hawkers have incredible shelf life, as witnessed
by the way my 7 and 8 year old Hawkers are still rock'n and hanging at
12.55V or so, and with a discharge cycle and a charge-up, go right back
to 12.78 or so...not bad for 8 year old batteries that had been abused
in too many ways to list!
I can't say enough good words about these guys at Aerobatteries, and
it's not just because they worked together with Hawker to get
sponsorship of White Zombie. Dick Brown, the main man at Aerobatteries,
was ready to write his own check to get me the batteries for the car. He
collaborated with Hawker though, and got the factory behind our project.
Dick is completely amped-up over EVs and may even show up at the Midwest
EV drag races in May at the Route 66 Raceway. You simply could not find
a nicer man to do business with. Dick can also set you up with other
versions of Hawker batteries. He is working on a special pricing list
for EVers who buy in EV quantities, too.
If not for any other reason, if you are considering buying a set of
Hawkers for your EV project, please give the guys who are supporting EV
racing your business as a way of thanking them for their support. EV
racing helps the entire EV community by pushing products to their
limits, spawning new EV products (the Zilla and the PFC chargers are a
direct result of EV racing), and making the general public aware of EVs,
in a way that can't be ignored. While GM crushes EVs and spins them in a
negative light, the EV racers are out there to make sure EVs don't get
forgotten or misunderstood.
See Ya.......John Wayland
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