On the compensation of dead time and zero-current crossing for a PWM-inverter-controlled AC servo drive |
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Authors: | Ben-Brahim L |
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Affiliation: | Univ. of Qatar, Doha, Qatar; |
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Abstract: | 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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