I wanted to try building a driver circuit for a small induction motor, using an ATMega328P (i.e. the micro in the Arduino UNO) to generate a 5 kHz PWM signal which changes duty cycle every period using an array of samples from a sine wave, which is then fed into a gate driver that tranfers it into the gate of a power MOSFET, the output of which then goes into a low pass filter to turn into an approximation of a 50Hz sine wave.
The problem with this circuit is that the resulting sine wave will never switch polarity, alternating between +V and GND every 2 half cycles. I've thought about just hooking up one of the motor's leads to V/2 instead of GND but I'm not sure it will work. Will it damage the motor?
| Ranking | Name | Answers |
|---|---|---|
| 1 | PCBWay Team | 12 |
| 2 | Jack Durie | 1 |
