A
afreshpath_admin
Guest
I have been following the GM-Volt a bit and like the "series" hybrid that simply uses a generator instead of a gasoline drive motor like current hybrids but...
They are using a 3-phase AC motor. Wouldn't it be more efficient to use a permanent magnet DC motor? This would allow for better generation during periods of coasting and deceleration / braking. Also, it cuts out completely the need for an inverter to produce the AC from battery power.
It also seems to me that the use of DC motors would be more practical in developing an All Wheel Drive system.
As for the generator, I also feel that their system is not very efficient here as well. They appear to be using the output of the generator to directly power the AC motor like a locomotive does. Since the car has that battery bank, wouldn't it be more practical to feed the output of the generator to the battery pack to allow for some recharging and that would eventually allow for the generator to shut down eventually.
They are using a 3-phase AC motor. Wouldn't it be more efficient to use a permanent magnet DC motor? This would allow for better generation during periods of coasting and deceleration / braking. Also, it cuts out completely the need for an inverter to produce the AC from battery power.
It also seems to me that the use of DC motors would be more practical in developing an All Wheel Drive system.
As for the generator, I also feel that their system is not very efficient here as well. They appear to be using the output of the generator to directly power the AC motor like a locomotive does. Since the car has that battery bank, wouldn't it be more practical to feed the output of the generator to the battery pack to allow for some recharging and that would eventually allow for the generator to shut down eventually.