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http://dx.doi.org/10.6113/TKPE.2012.17.2.150

Digital Load Sharing Method for Converter parallel Operation  

Yoo, Kwang-Min (Dept. of Electrical Engineering, Myongji University)
Kim, Won-Yong (Dept. of Electrical Engineering, Myongji University)
Park, Seung-Hee (Dept. of Electrical Engineering, Myongji University)
Lee, Dong-Hoo (Dongah elecomm Corporation)
Kim, Yun-Sung (Dongah elecomm Corporation)
Jeong, Yu-Seok (Dept. of Electrical Engineering, Myongji University)
Lee, Jun-Young (Department of Electrical Engineering, Myongji University)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.17, no.2, 2012 , pp. 150-157 More about this Journal
Abstract
This paper presents CAN-based parallel-operation and load-sharing techniques for the communication server power supply. With the load information obtained through CAN communication, each modules performs its current control independently and the power unbalance caused by impedance differences of converter modules can be reduced. In conventional method, slave modules are controlled by master module. On the other hand, the proposed load share algorithm uses the Multi-Master method. Therefore, accurate load sharing can be accomplished by the reference structure of each module's average current. Each converter has two stages and it is separated into PFC, which is responsible for harmonic regulation, and LLC resonant converter, which controls output voltage. To verified the performance of the proposed method, two 2KW prototypes has been implemented and experimented.
Keywords
Load share; Parallel operation; LLC; bridgeless PFC; Server power;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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