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High power factor PWM rectifiers with an analog pulsewidth prediction controller

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4 Author(s)
Ohnuki, T. ; Fac. of Sci. & Eng., Tokyo Denki Univ., Saitama, Japan ; Miyashita, O. ; Haneyoshi, T. ; Ohtsuji, E.

A single-phase PWM bridge rectifier controlled by a pulsewidth prediction (PWP) method to operate switching devices to realize a high power factor and to reduce the AC-side current harmonics is proposed. The PWP controller provides instantaneous current control with either a constant frequency carrier or a piecewisely fixed multiple-frequency carrier in one source-voltage cycle. The paper describes the control methods and implementation of analog PWP controllers, and performance characteristics of the rectifier. Unity displacement power factor was obtained and the AC-side current harmonics were reduced. Experimental results show the usefulness of the proposed method and applicability to rectifiers in UPS systems, etc

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Power Electronics, IEEE Transactions on  (Volume:11 ,  Issue: 3 )