nlh, Why do you think it's silly exactly? You lost me on that. I think using V2G (or G2V or smart grids) makes perfect sense. There are other threads in the old forum dedicated to this topic and I think the argument for using V2G was successfully defended.Yeah, I think the whole V2G thing is a little silly, at least leveraging that as a requirement on the Volt. I do think having a battery back up in the house is a great idea. I hope that the technological improvement in batteries for electric cars will spin off into some generic storage device that can act as a UPS.
As for running the internal combustion engine in a closed garage...well...perhaps that not wise. If there is to be an "auto" setting that can have the ICE running while the car isn't "on" then, yes, a shut down feature would be nice for high CO concentrations. Perhaps an alarm too.
It's not that I find V2G a silly concept per se as much as I think having the mindset that V2G is best way to maintain individual storage capacity is silly. My thought is this. Why isn't any body talking about H2G (Home to Grid). It strikes me as much more prudent to push for capacity installed in the home. Maybe the vehicle becomes an extension of that capacity, but I think it is silly to only consider the vehicle as the storage medium. Logistically it makes much more sense for me to have capacity in the home.nlh, Why do you think it's silly exactly? You lost me on that. I think using V2G (or G2V or smart grids) makes perfect sense. There are other threads in the old forum dedicated to this topic and I think the argument for using V2G was successfully defended.
So you are suggesting that instead of sending power back onto the grid it is better to just pull off the grid as needed and to keep an in house battery charged. That way I have a central location to store all of the energy that I've generated, from wind, solar, running gerbils or whatever, without having to play the "signing up for net metering" game.nlh_90210 wrote: Why isn't any body talking about H2G ...
Although I mentioned this in the other forum, I would like to repeat the following:
V2G and H2G are needed only when all the generators on the grid are working at their max capacity and there is a demand beyond the combined power. That happens only when everybody is watching an MLB all-star game with air conditioners at full blast and factories, shopping malls and offices are fully in operation. Other times the grid does not need your help. Actually the grid dumps electricity into the ground to stabilize the load during off-peak hours. In other words, during off-peak hours the energy from your V2G or H2G and solar panels or wind generators are just wasted by the utility companies even though you are paid for the energy supplied to the grid. Besides, supplying energy back to the grid is a nuisance to utility operators because of the Ferranti effect.
Better yet is the use of the A123 type of low-cost, small and high-capacity battery to store energy from the grid during off-peak hours and use it during peak hours by cutting off your house from the grid. If you charge 16KWH of energy into your battery pack (UPS) in, say, 8 off-peak hours, it should be good for 4 to 8 hours to keep fridge running, cook lunch, do the laundry, watch TV, surf the net and even keep your room cool, all off the grid. Suppose one million households are equipped with this UPS and are off the grid during the peak hours, you are talking about some 2GW of power shaved off the peak, which will certainly allows the utility operators decommission one or two power plants.
This in turn improves the bottom line of utility companies and reduces CO2 and other harmful emissions. You also do not have to worry too much about power outages caused by strong winds or ice storms. Another benefit of this high-capacity battery is that it can stabilize the unpredictable nature of the solar and wind generators.
The concept of peak shaving is not new. But, it is becoming reality because of the A123 battery.
The more I look at the 2008 Applied Power Electronics Conference presentation that included some details about the Chevy Volt. I'm starting to see it only a one page of the Chevy Volt. The rest is about the "Hybrid 2 Mode". The Volt is a "Series Hybrid", correct word should be ER-EV. I would not look at as "Chevy Volt" car at all. I still believe the Motor is AC, not DC.According to the APEC 2008 presentation, the Volt will have a DC motor, and the inverter will provide 42 to 700 Volts, DC. Not AC! So you would need a converter in your house to get AC out of the Volt, either for home or for the Grid. The KISS principle says no to having the Volt provide the AC.
I may want the car to be on when i'm not in it. Say its at night and i need to use the headlights to light up an area. or I'm camping and running some electric stuff off the car.Why don't the designers just put in an ocupancy sensor in the seat similar to the passenger airbag, or seat belt sensor. It would not allow the engine to turn on if no occupant?
That would make more sense being that it is a plug-in hybrid. After all, if the gas engine recharged the battery then by the time you got home everyday your battery would have already recharged from gasoline and there would be no point of plugging the car into an outlet.My guess is when your 40 miles are up, you won't be running all electric until you plug in and recharge, except maybe on longer trips where after a few hours of driving the battery happens to get a good charge.
Yeah! I agree...However, it might be nice to offer some kind of software setting (assuming the volt has a screen like the Prius or something) where you could manually tell it to do a full recharge in the absence of an electric outlet.