The popular VSI (voltage source inverter) drives in use today are mostly PWM (pulse width modulated) drives. Harmonics produced by these drives cause heat losses, reduce the efficiency of the machine and also cause vibrations in the rotor. Active and passive filters are some of the methods to reduce the harmonics generated by these drives. A novel method is discussed which not only eliminates the 5/sup th/ harmonic but also any other negative sequence harmonics. This method, based on a reactor circuit, shows a reduction in harmonics and an improvement in the efficiency of the machine. The method can also reduce negative sequence harmonics produced by other nonlinear devices.
B. H. Chowdhury and R. Bantu, "Improvement of Power Quality in vs. I Drives," Proceedings of the IEEE Power Engineering Society Winter Meeting, 2002, Institute of Electrical and Electronics Engineers (IEEE), Jan 2002.
The definitive version is available at http://dx.doi.org/10.1109/PESW.2002.985145
IEEE Power Engineering Society Winter Meeting, 2002
Electrical and Computer Engineering
Keywords and Phrases
DC-AC Power Convertors; PWM VSI Drives; PWM Invertors; Efficiency Improvement; Harmonic Distortion; Harmonics Elimination; Harmonics Suppression; Heat Losses; Negative Sequence Harmonics; Power Conversion Harmonics; Power Quality Improvement; Power Supply Quality; Reactor Circuit; Rotor Vibrations; Voltage Source Inverters
Article - Conference proceedings
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