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Comparisons of PWM and one-cycle control for power amplifier with multilevel converter

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3 Author(s)
Chan, C.C. ; Dept. of Electr. & Electron. Eng., Hong Kong Univ. ; Qian, C. ; Meng, S.

Based on the concepts of cascade multilevel converters and one-cycle technique, comparisons are conducted to characterize the distortion of the pulsewidth modulation (PWM) and one-cycle control methods that were applied to converters. Simulation results for the different control schemes are obtained in PSIM software initially to see the effect of one-cycle control different from that of PWM control. Through the comparisons, the advantages and disadvantages are identified for each method. The one-cycle scheme is better than PWM control in reducing undesirable harmonics and tracing dynamic waveforms. Simulation and experimental results are also provided to verify the conclusions.

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Industrial Electronics, IEEE Transactions on  (Volume:49 ,  Issue: 6 )