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《Journal of Electric Power Science and Technology》 2009-01
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Research on a new unsymmetrical PWM technique for large capacity inverter

ZHANG Bing,QIU Jin,HE Yan(Electric Power Research Institute of SGCC,Wuhan 430074,China)  
A new unsymmetrical PWM technique is introduced in this paper,which is particularly applied to high-power inverter control in flexible AC transmission systems(FACTS).The proposed pulse pattern possesses only half-wave inverse symmetry,but its quarter-wave symmetry is absent,the freedom degree of switching angles is doubled,the specific harmonics are thus controlled by their amplitudes and phase angles.In the lower switching frequency,the technique is designed for use in an active power filter.The good performance of this technique in harmonics compensation is verified by the simulation of a parallel compensator using Simplorer.
【CateGory Index】: TM464
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Chinese Journal Full-text Database 1 Hits
1 LI Song(College of Electrical Engineering,East China jiaotong University,Nanchang 330013,China);Study of three-level inverter modulation technology[J];Journal of Electric Power Science and Technology;2007-03
Chinese Journal Full-text Database 1 Hits
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