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Open AccessArticle

A Half-Bridge Voltage Balancer with New Controller for Bipolar DC Distribution Systems

Department of Electrical Engineering, Myong-ji University, Gyeonggi-do, 116 Myongji-ro, Yongin-si 449-728, Korea
Academic Editor: Josep M. Guerrero
Energies 2016, 9(3), 182; https://doi.org/10.3390/en9030182
Received: 10 January 2016 / Revised: 23 February 2016 / Accepted: 3 March 2016 / Published: 10 March 2016
(This article belongs to the Special Issue Microgrids 2016)
This paper proposes a half-bridge voltage balancer with a new controller for bipolar DC distribution systems. The proposed control scheme consists of two cascaded Proportional Integral (PI) controls rather than one PI control for balancing the pole voltage. In order to confirm the excellence of voltage balancing performance, a typical bipolar DC distribution system including a half-bridge voltage balancer with proposed controller was analyzed by computer simulations. Experiments with a scaled prototype were also carried out to confirm the simulation results. The half-bridge voltage balancer with proposed controller shows better performance than the half-bridge voltage balancer with one PI control for balancing the pole voltage. View Full-Text
Keywords: bipolar DC distribution system; grid-tied converter; half-bridge voltage balancer; Proportional and Integral (PI) control; photovoltaic (PV) generator; battery energy storage (BES); super-cap energy storage (SCES) bipolar DC distribution system; grid-tied converter; half-bridge voltage balancer; Proportional and Integral (PI) control; photovoltaic (PV) generator; battery energy storage (BES); super-cap energy storage (SCES)
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Han, B.-M. A Half-Bridge Voltage Balancer with New Controller for Bipolar DC Distribution Systems. Energies 2016, 9, 182.

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