NDLI: High-power-factor operation with improved line current harmonics of three-phase AC-to-DC Converter

Content Provider	IEEE Xplore Digital Library
Author	Dhomane, G.A. Suryawanshi, H.M. Renge, M.M.
Copyright Year	2008
Description	Author affiliation: Electr. Eng. Dept., Visvesvaraya Nat. Inst. of Technol., Nagpur (Dhomane, G.A.; Suryawanshi, H.M.; Renge, M.M.)
Abstract	Most modern variable-speed motor drives are based on pulse width modulated voltage source inverters, supplied from a smooth DC link voltage. This is often obtained from a three-phase diode bridge mains rectifier with a large output capacitor to keep the DC link voltage essentially constant. The AC currents at the input of the bridge are often discontinuous and contain high levels of harmonics. Harmonic currents from non linear loads are unacceptable, as they penetrate the supply system and affect the voltage at the point of common coupling. In this paper a single stage, three-phase AC-to-DC converter topology, with new structure for high power applications is proposed. The principle features of the topology include continuous current operation of the input source inductors, inherent active wave shaping of the input currents, resulting in a high power factor operation. Only two active switches are required. Both the switches are soft-switched. The high frequency (HF) current injection technique is used. The diodes of rectifier also show soft-switching. The simulation results and experimental results for a laboratory prototype for 5 kW converter are presented.
Starting Page	437
Ending Page	440
File Size	323263
Page Count	4
File Format	PDF
ISBN	9781424438259
DOI	10.1109/INDCON.2008.4768763
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-12-11
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Motor drives High-frequency current injection Capacitors Switches Topology Diodes Pulse width modulation inverters high-power-factor Bridge circuits Rectifiers Voltage Pulse inverters zero-voltage switching
Content Type	Text
Resource Type	Article

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