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On the compensation of dead time and zero-current crossing for a PWM-inverter-controlled AC servo drive

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1 Author(s)
Ben-Brahim, L. ; Univ. of Qatar, Doha, Qatar

Conventional dead-time compensation methods, for pulsewidth-modulated (PWM) inverters, improve the current output waveforms; however, the zero-current crossing effect is still apparent. This letter proposes a new method, based on angle domain repetitive control, to reduce the distortions in the PWM inverters output waveforms caused by the dead time and the zero-crossing problem.

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Industrial Electronics, IEEE Transactions on  (Volume:51 ,  Issue: 5 )