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This paper presents a new circuit topology of DC bus line switch-assisted full-bridge soft switching PWM inverter type DC-DC converter. The proposed power converter is composed of typical voltage source H full-bridge high frequency PWM inverter with a high frequency transformer link in addition to a single DC bus line side power semiconductor switching device for PWM control scheme and a capacitive...
This paper presents a simple two-loop voltage-mode control scheme for the buck converter with input filter. In this voltage-mode control scheme the controller do not need any external saw-tooth generator for PWM generation and the loop design is also easier. The controller implementation requires only a single compensator in the outer loop and gives almost current-mode control performance. The proposed...
The energy supply systems of telecommunications power stations are based on rectifier units of high power factor, compact with high efficiency. To obtain high power factor it is necessary to use in the ac-to-dc conversion stage a power factor pre-regulator, which leads to an increase of the input voltage levels of the dc-to-dc stage. In order to reduce the voltage efforts over the switches of the...
A new zero-current switching (ZCS) pulse-width modulated (PWM) boost converter is proposed in the paper. The main power switch in the proposed converter can operate with ZCS due to an active auxiliary circuit that diverts current away from the switch just before it is turned off. The circuit allows the converter to operate with ZCS without the disadvantages typically found in other, previously proposed...
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