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I have a project that inverts DC to AC. I have a problem as I increase the load, ripple occure in the DC bus voltage and the output signal become distorted.
The power source is 70v from DC to DC converter, and the mosfet drivers are fed with 20KHz PWM from mbed microcontroller, the Inverter is designed to handle 100watt, the question is why when I increase the load, the output signal is distorted. and ripple occure in the DC bus voltage (even when I supply the inverter from bench power supply)
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