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http://dx.doi.org/10.6113/TKPE.2019.24.4.229

A Study on Bipolar DC-DC Converter for Low Voltage Direct Current Distribution  

Lee, Jung-Yong (Dept. of Electrical Engineering, Konkuk University)
Kim, Ho-Sung (Power Conversion and Control Research Center, HVDC Research Division, KERI)
Cho, Jin-Tae (Smart Power Distribution Lab. Power Distribution ICT Group, KEPCO)
Kim, Ju-Yong (Smart Power Distribution Lab. Power Distribution ICT Group, KEPCO)
Cho, Younghoon (Dept. of Electrical Engineering, Konkuk University)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.24, no.4, 2019 , pp. 229-236 More about this Journal
Abstract
This study proposes a DC-DC converter topology of solid-state transformer for low-voltage DC distribution. The proposed topology consists of a voltage balancer and bipolar DC-DC converter. The voltage and current equations are obtained on the basis of switching states to design the controller. The open-loop gain of the controller is achieved using the derived voltage and current equations. The controller gain is selected through the frequency analysis of the loop gain. The inductance and capacitance are calculated considering the voltage and current ripples. The prototype is fabricated in accordance with the designed system parameters. The proposed topology and designed controller are verified through simulation and experiment.
Keywords
Bipolar DC-DC converter; LVDC(Low Voltage Direct Current); SST(Solid State Transformer); Voltage balancer;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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