I am going to be working with a group of high school students this summer
who have very limited prior solar experience. We will be installing a small
off grid PV system (1.9kW) and small wind turbine generator (400W to 1kW).
I plan on using three Morningstar Trimetric controllers, one to control
Hi Hilton,
We've done the math for our installed cost on the Powerwall 2. Certainly,
it wouldn't make sense to purchase it just for energy savings alone with
current California residential electricity tariffs. However, most folks are
buying it primarily for backup purposes and then a little bit
The things people spend money on and the reasons are so varied that dollar
analysis is just part of the decision.
It can be almost priceless to stay in your home after the utility goes off
during a wildfire. Keeping the smoke out, the cool air inside, and not
having to go to a shelter or motel
Hi Mac
Thanks for mentioning this, I’ve wondered about it a lot.
Maybe someone who’s a motor or electronics expert can chime in about what
potential damage can occur. Electronics, motors, VFD’s, are used to seeing
voltage +/- by a fair amount, but frequency is rarely off by more than a
Hi mike,
Install a tristar between the wind machine and the batteries like normal.
Just set the absorb volts way high. That way it will never get to absorb and
hence not regulate.
I use this technique with hydro often, but with MPPT.
Jay
Peltz power.
> On Feb 15, 2018, at 6:58 AM, Mike
Hi Wrenches,
I just wanted to report that some electronics will fail and burn up during
frequency shift. We have an off-grid Sunny Island system (60-62 Hz
operating frequency) and we experienced sensitive electronics burning up
during these events. Its been too long since this happened to tell
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