A new voltage balancing control for dual full-bridge converter and single-phase half-bridge inverter

Hyun, Seung-Wook; Lee, Hee Jun; Shin, Soo-Choel; Na, Kwang-Su; Won, Chung-Yuen

doi:10.1109/icems.2013.6713338

Cited by 1 publication

(1 citation statement)

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“…Recently, due to high oil prices, the need to cope with the growing demands for supply securities of alternative energy and electricity has increased, along with the need to address the increasing environmental problems [1,2]. Thus, the research and development currently being carried out in developed countries focus mainly on fuel cells [3], photovoltaics [4], and wind power generation [5] etc., as future technologies for solving the environmental and energy problems.…”

Section: Introductionmentioning

confidence: 99%

Performance Improvement of Isolated High Voltage Full Bridge Converter Using Voltage Doubler

Lee¹,

Shin²,

Hong³

et al. 2014

Journal of Electrical Engineering and Technology

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-The performance of an isolated high voltage full bridge converter is improved using a voltage doubler. In a conventional high voltage full bridge converter, the diode of the transformer secondary voltage undergoes a voltage spike due to the leakage inductance of the transformer and the resonance occurring with the parasitic capacitance of the diode. In addition, in the phase shift control, conduction loss largely increases from the freewheeling mode because of the circulating current. The efficiency of the converter is thus reduced. However, in the proposed converter, the high voltage dual converter consists of a voltage doubler because the circulating current of the converter is reduced to increase efficiency. On the other hand, in the proposed converter, an input current is distributed when using parallel input / serial output and the output voltage can be doubled. However, the voltages in the 2 serial DC links might be unbalanced due to line impedance, passive and active components impedance, and sensor error. Considering these problems, DC injection is performed due to the complementary operations of half bridge inverters as well as the disadvantage of the unbalance in the DC link. Therefore, the serial output of the converter needs to control the balance of the algorithm. In this paper, the performance of the conventional converter is improved and a balance control algorithm is proposed for the proposed converter. Also, the system of the 1.5[kW] PCS is verified through an experiment examining the operation and stability.

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Section: Introductionmentioning

confidence: 99%