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A Novel PWM Method for Three-Leg Two-Phase Inverter Fed Two-Phase Induction Motor  

Jang Do-Hyun (호서대 전기정보공학부)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.10, no.4, 2005 , pp. 339-346 More about this Journal
Abstract
It is complex to realize the reference voltage vector by the space vector PWM method in three-leg two-phase inverter In this paper a new PWM technique for three-leg two-phase inverter fed two-phase induction motor is poroposed assuming that three-leg two-phase inverter is equivalent circuit for 'four-leg two-phase inverter with the connected two windings'. From assumption, six sectors are decreased to four sectors, and simple sinusoidal PWM method instead of SVPWM is applied to three-leg two-phase inverter. Also, the switching pattern to determine the switching periods at each sector is proposed. Practical verification of theoretical predictions is presented to confirm the capabilities of the new techniques.
Keywords
three-leg two-phase inverter; two-phase induction motor drives; switching pattern; slnusoidal PWM method;
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