3 ms·
> Also electric motors can run on DC efficiently (see electric cars). It's quite likely that the motors on electric cars (and other efficient electric motors)
by cesarb 3y ago
> Also electric motors can run on DC efficiently (see electric cars).
It's quite likely that the motors on electric cars (and other efficient electric motors) are actually using an inverter to turn the DC into multi-phase AC and power an AC motor; this allows varying both the voltage and frequency of the AC fed into the motor.
- phkahler 3y agoBingo. The frequency is proportional to motor/vehicle speed. The inverters are at least 98 percent efficient at high power, and a good EV motor is in the 90s at high power.