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Almost feel like I will be leaving performance on the table if I don’t go 72v.
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On paper there should be no difference between a 48v or 72v system when it comes to AC drive. There is no relationship between the supply voltage and what the controller passes to the motor.
Very simply, In an AC drive system, DC power is supplied to the controller and the inverter in the controller converts it to an AC signal and varies the frequency and amplitude of the AC signal given to the motor to vary the speed, torque etc.
The only difference between a 48v and 72v system is that less current is drawn from the 72v battery for the same performance. You need to think in watts, not volts.
Having said all that, at least one user here has reported a performance increase when going from 48v to 72v with their Navitas. Maybe this was perceived to justify the cost of the 72v battery, maybe the test conditions weren’t the same, maybe something else changed, etc. temperature or tyre pressure, maybe there’s some trickery in the Navitas, who knows. So make of that what you will.
Cheers
Pat.