Nonlinear Dynamic Behaviors in Voltage-Mode Controlled Single-Phase Half-Bridge Inverters via Varying Input Voltage

Hsieh, Fei-Hu; Wang, Hen-Kung; Chang, Polun; Wu, Hsuan-Chiang

doi:10.1109/pcspa.2010.63

Cited by 3 publications

(1 citation statement)

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“…The half bridge inverter is composed of the output capacitor of the serial converter. While the disadvantage of the half bridge inverter is that it increases the voltage of the DC link capacitor more than the full bridge inverter, it also reduces the cost and volume with 2 switches [11]. However, in the proposed voltage doubler dual converter, the voltages in 2 serial DC links might be unbalanced due to line impedance, passive and active components impedance, and sensor error.…”

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%