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New random inverter control technique for common mode voltage mitigation of motor drives

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1 Author(s)
Lai, Y.S. ; Dept. of Electr. Eng., Nat. Taipei Univ. of Technol., Taiwan

The purpose of the paper is to present a new inverter control technique which not only mitigates the common mode voltage for motor drive applications but also significantly reduces the calculations required for high switching frequency control, in comparison with the conventional space vector modulation technique. Moreover, it is demonstrated that the presented technique improves the quality of inverter control by randomising the inverter switching frequency, thereby spreading the first dominant harmonic cluster which contributes to the noise. Experimental results derived from a microprocessor-based experimental drive system are presented to confirm the theoretical analysis

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Electric Power Applications, IEE Proceedings -  (Volume:146 ,  Issue: 3 )