FWIW, I'm 95% certain that is not a photo in the article. It's a photo-rendered CAD model. If they had hardware, they'd show it.
Chris LeSled is for sale! Http://WWW.evalbum.com/274 On Apr 14, 2013 10:26 PM, "Al" <[email protected]> wrote: > Typical marketing piece looking for investors. > Sigh. > > Al > ----- Original Message ----- From: "brucedp5" <[email protected]> > To: <[email protected]> > Sent: Sunday, April 14, 2013 8:55 AM > Subject: [EVDL] EVLN: Axiflux 150kW 2.8kNm EV motors, 95% efficiency > > > >> Afma motor reconfigures itself constantly for optimum performance >> >> http://www.drives.co.uk/**fullstory.asp?id=3804<http://www.drives.co.uk/fullstory.asp?id=3804> >> [image] Novel 23-phase motor optimises itself continuously in real time >> [Apr 8 2013] >> >> [image >> http://www.drives.co.uk/**images/news/news-2012/Axiflux-**motor-web.jpg<http://www.drives.co.uk/images/news/news-2012/Axiflux-motor-web.jpg> >> ] >> >> An Australian start-up company has developed a novel multi-phase motor >> that, >> it says, can be optimised in real time for efficiency or for power, at any >> time and for any speed. Melbourne-based Axiflux’s Afma (adaptive magnetic >> flux array) machines contain 23 coils, each independently controlled by >> its >> own microprocessor. >> >> The machines – which could be configured in various ways, including as >> single-phase AC motors, DC motors and three-phase high-voltage AC motors >> or >> generators – are essentially axial-flux permanent magnet machines. Their >> disc-like structure allows several rotors to be stacked together to double >> or triple the output. All of the poles and magnets are on the same axis as >> the rotor and inverter electronics can be integrated with the motor. >> >> Traditionally, decisions have had to be made when designing a motor to >> optimise it for a specific maximum power, maximum torque at a given speed, >> and maximum efficiency at that speed. By contrast, the Afma motor >> reconfigures itself constantly for optimum performance across a wide range >> of operating speeds and loads. “Design decisions that were traditionally >> locked in at the factory, are now made in real time,” Axiflux says. This >> avoids the need for compromise, it adds. >> >> If less power is needed, sections of the machine can be disabled so that >> only those coils best aligned with the magnets are turned on. Similarly, >> if >> one of the 23 coils fails, the machine re-optimises itself without the >> coil. >> In some configurations, such as generators, the coils could be >> hot-swappable, allowing the machine to continue operating without any >> downtime. The motors can operate with almost half of their coils turned >> off. >> >> Because the Afma motor uses more coils and magnets than traditional >> machines, the current through each coil is smaller, allowing less copper >> to >> be used, cutting losses and producing less heat. The motors also need less >> steel and can be smaller than conventional machines of a similar rating. >> >> Although the current through each coil is small, the total current for the >> whole system is said to scale linearly, along with the quantity of >> material >> and the cost of the machine. This should allow large motors to be built >> “at >> an affordable price,” says Axiflux. >> >> Part-load efficiencies are claimed to be as high as 95%, compared to 70% >> for >> some conventional designs. >> >> Another advantage – especially for applications such as electrical >> vehicles >> – is that the Afma motor can do away with the need for heavy gearboxes and >> separate inverters. It should be easy to manufacture using established >> techniques and materials. >> >> The motor is the brainchild of Axiflux’s chief technology officer, David >> Jahshan, who has been working on the technology since 2008. One reason >> that >> it is economic for each of the 23 coils to have its own microcontroller is >> that mass-market products such as plasma TVs have brought the price of >> these >> devices down from around $50 to about $2 each. The low-cost processors >> allow >> the use of techniques such artificial intelligence and neural network >> processing to produce the ideal waveform for each coil under the current >> operating conditions. >> >> Axiflux has built several prototype machines and is currently working on a >> 150kW version. >> >> It is also collaborating with several other Australian companies to test a >> 150kW, 2.8kNm motor in an electric vehicle. In addition, Axiflux is >> planning >> to build its own electric sportscar that will have two 300kW in-wheel >> motors >> – each motor being a similar size to a conventional brake assembly. >> >> The Axiflux team has also developed concept designs for direct-drive wind >> turbines (avoiding the need for heavy, costly gearboxes) and efficient >> industrial crushers and fans that would reduce energy requirements at >> remote >> mining locations. >> >> Axiflux is talking to several potential joint venture partners around the >> world and is securing global patent protection for its technology. >> >> “The electric motor has really not changed since its invention in the late >> 1800s,” says Airflux CEO, Chris Mosely. “What David (Jahshan) has done is >> invert the design approach to motors and generators and, in the process, >> created a modular, dynamically reconfigurable electric machine. The >> applications and benefits which will accrue are extremely significant.” >> [© DFA Media] >> >> >> >> >> For all EVLN posts use: >> http://electric-vehicle-**discussion-list.413529.n4.** >> nabble.com/template/**NamlServlet.jtp?macro=search_** >> page&node=413529&query=evln&**sort=date<http://electric-vehicle-discussion-list.413529.n4.nabble.com/template/NamlServlet.jtp?macro=search_page&node=413529&query=evln&sort=date> >> >> Here are today's archive-only EV posts: >> >> EVLN: Seoul's 24Hr EV Rental Service Via Automated Rental Machines >> EVLN: SEL nEV donation for wsu.edu solar project in RE course >> EVLN: I'm Charged, your Charged, we're all Charged-Up ... >> EVLN: Alvarez Electric Motors' nEV selection in Riverside, CA >> EVLN: Frenchman makes electric wheelchairs for Vietnamese disabled >> + >> EVLN: TCU students convert 1974 Porsche 914 to Electric (video) >> >> >> {brucedp.150m.com} >> >> >> >> -- >> View this message in context: http://electric-vehicle-** >> discussion-list.413529.n4.**nabble.com/EVLN-Axiflux-150kW-** >> 2-8kNm-EV-motors-95-**efficiency-tp4662455.html<http://electric-vehicle-discussion-list.413529.n4.nabble.com/EVLN-Axiflux-150kW-2-8kNm-EV-motors-95-efficiency-tp4662455.html> >> Sent from the Electric Vehicle Discussion List mailing list archive at >> Nabble.com. >> ______________________________**_________________ >> UNSUBSCRIBE: >> http://www.evdl.org/help/**index.html#usub<http://www.evdl.org/help/index.html#usub> >> http://lists.evdl.org/**listinfo.cgi/ev-evdl.org<http://lists.evdl.org/listinfo.cgi/ev-evdl.org> >> For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/ >> **group/NEDRA <http://groups.yahoo.com/group/NEDRA>) >> >> >> > ______________________________**_________________ > UNSUBSCRIBE: > http://www.evdl.org/help/**index.html#usub<http://www.evdl.org/help/index.html#usub> > http://lists.evdl.org/**listinfo.cgi/ev-evdl.org<http://lists.evdl.org/listinfo.cgi/ev-evdl.org> > For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/* > *group/NEDRA <http://groups.yahoo.com/group/NEDRA>) > > -------------- next part -------------- An HTML attachment was scrubbed... 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