If I understand this correctly, your plan is to build a series hybrid with a small battery (not for plug-in charging). Because the battery is small, the engine and generator needs to keep up with any demand which is sustained for more than a few seconds - that means that if you want to be able to use the full power of the motor without restriction you need an engine and generator producing similar power, and if you want to be able to climb an extended grade you need an engine and generator producing whatever amount of power that takes.
Although Nissan does this and it certainly works, it doesn't make a lot of sense to me. With all of the cost and complication of a plug-in series hybrid other than a smaller battery, it gives up the ability to plug in for only the cost and weight saving of the smaller battery.
The Prius inverter includes a voltage doubler. If you only have a 120 V battery, you will not get 330 V out of it so you won't be able to use the full capability of the motor. Why not use a Prius battery?
I guess this might make more sense if I understood what you're trying to achieve, and how that is different from what you would get by just buying a used Prius.
Although Nissan does this and it certainly works, it doesn't make a lot of sense to me. With all of the cost and complication of a plug-in series hybrid other than a smaller battery, it gives up the ability to plug in for only the cost and weight saving of the smaller battery.
The Prius inverter includes a voltage doubler. If you only have a 120 V battery, you will not get 330 V out of it so you won't be able to use the full capability of the motor. Why not use a Prius battery?
I guess this might make more sense if I understood what you're trying to achieve, and how that is different from what you would get by just buying a used Prius.