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A non-isolated dual half-bridge zero-voltage-switching (ZVS)/ zero-current-switching (ZCS) high step-down converter with zero dc bias current and active clamp is presented in this paper. Owing to the use of the dc-blocking capacitors, the dc magnetizing inductance current of the coupled inductor is zero. Thus, the magnetizing current can be both positive and negative, which means that the entire core...
In this paper a novel simple high step-up converter using a coupled inductor and a charge pump capacitor is presented. Compared with the traditional boost converter and other converters with simple structures, the proposed converter can achieve higher voltage gain. The leakage inductance energy of the coupled inductor can be recycled without any clamp circuit. Moreover, the active switch is not floating;...
In this paper, an improved KY converter is presented, which is constructed mainly by one charge pump capacitor and one central-tapped coupling inductor. Besides, a passive clamping snubber is added to this converter to improve the efficiency above half load. As compared to the KY converter, the voltage gain of the proposed converter is upgraded significantly. In this paper, the basis operating principles...
In this paper, a novel high step-up converter is presented, which combines one charge pump and one coupled inductor with the turns ratio. The corresponding voltage gain is greater than that of the existing step-up converter combing KY and buck-boost converters. Since the proposed converter possesses an output inductor, the output inductor current is non-pulsating. After some mathematical deductions,...
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