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Current Balance Controller for Parallel Boost Converter with Peak Current Mode Control  

Park, Jong-Gyu (남해대학 전기과)
Jang, Eun-Sung (경상대학 전기공학과)
Kang, Sin-Chul (남해대학 전기과)
Shin, Yong-Hwan (경상대학 전기공학과)
Shin, Hwi-Beom (경상대학 전기전자공학부)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.58, no.2, 2009 , pp. 301-307 More about this Journal
Abstract
In the paralleled converter module with peak current mode control, current imbalance appears when the voltage controllers with integral control of converter module are not exactly identical. In this paper, the voltage controller is designed to equal the current command of each converter module using the current command bus. The current balance controller is also proposed to balance the average currents of converter modules with imbalaced inductance. It is designed to have good transient response. Proposed method is implemented with the paralleled 2-module and 4-module boost converters with imbalanced inductance. Experimental results verify the performance of current share during both steady and transient states of converter.
Keywords
Current command bus; Current share; Parallel converter; Peak current control;
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