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A new time-domain discontinuous space-vector PWM technique in overmodulation region

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2 Author(s)
Hee-Jhung Park ; Daewoo Heavy Ind. Co., Changwon, South Korea ; Myung-Joong Youn

A new discontinuous modulation method based on space-vector control is proposed and analyzed. The proposed technique employs a pulse-dropping method and is designed in the time domain. It features a very wide modulation range while maintaining the required waveform qualities and switching numbers in the overmodulation region. Since the modulation method and modulation index equation are simple, the proposed technique can be easily implemented by software and is applicable to the overmodulation region in ac motor drives. The performance indexes are discussed and experiments have been performed.

Published in:

IEEE Transactions on Industrial Electronics  (Volume:50 ,  Issue: 2 )