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http://dx.doi.org/10.6113/TKPE.2015.20.4.375

Reduced Current Distortion of Three-Phase Three-Switch Buck-Type Rectifier using Carrier Based PWM in EV Traction Battery Charging Systems  

Chae, Beomseok (Dept. of Electrical Engineering, Smart Grid Research Center, Chonbuk Nat'l University)
Kang, Taewon (Dept. of Electrical Engineering, Smart Grid Research Center, Chonbuk Nat'l University)
Kang, Tahyun (Dept. of Electrical Engineering, Smart Grid Research Center, Chonbuk Nat'l University)
Suh, Yongsug (Dept. of Electrical Engineering, Smart Grid Research Center, Chonbuk Nat'l University)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.20, no.4, 2015 , pp. 375-387 More about this Journal
Abstract
This study investigates an economic and highly efficient power-converter topology and its modulation scheme for 60 kW rapid EV charger system. The target system is a three-phase three-switch buck-type rectifier topology. A new carrier-based PWM scheme, which is characterized by simple implementation using logic gates, is introduced in this paper. This PWM scheme replaces the diode rectifier equivalent switching state with an active switching state to produce the same effective current flowing path. As a result, the distortion of input current during the polarity reversal of capacitor line voltage can be mitigated. The proposed modulation technique is confirmed through simulation verification. The proposed modulation technique and its implementation scheme can expand the operation range of the three-phase three-switch buck-type rectifier with high-quality AC input and capacitor ripple current.
Keywords
Three-phase three-switch buck-type rectifier; Current distortion; Carrier based PWM; Current source converter;
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