Performance assessment of conventional modulation schemes in terms of conducted EMI generated by PWM inverters

This paper proposes a comparative study between the performance of sine-triangle, third harmonic injection and space vector modulation schemes in terms of conducted (common and differential mode) EMI generated by two-level three-phase voltage source inverters. For this purpose, an experimental setup has been built to measure in time domain the conducted disturbances propagated back into the DC source. The experimental results analyzed in both time and frequency domains showed that these disturbances are effectively related to the applied modulation scheme.

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