Assessment of waveform control method for mitigation of low-frequency current ripple

Waveform control method can mitigate such a low-frequency ripple current being drawn from the DC distribution while the DC distribution system delivers AC power to the load through a differential inverter. Assessment on the waveform control method and comparative study between with and without waveform control method are proposed in this paper¹. Experimental results are provided to explain the operation and showcase the performance between with and without the waveform control method. Results validate that the waveform control solution can achieve significant mitigation of the current ripple as well as high quality output voltage without extra hardware. Lower current stress of the switch and higher efficiency can be obtained with waveform control method than without waveform control method.