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This paper proposes a dc power supply system to give high power factor and low current distortion on the rectifier side and provide stable dc voltage on the isolated dc/dc converter side. The proposed dc power supply system uses a new ZCS strategy to get ZCS function. Besides operating at constant frequency, all semiconductor devices operate at ZCS without additional current stress. A significant...
A ZCS-PWM interleaved boost rectifier with high power factor is proposed in this paper. The pulse-width-modulation technique and soft commutation technique are used in the proposed rectifier to promote the circuit performance. The proposed circuit includes two boost converter which are operated at interleaved mode to increase the output power and reduce the input ripple current. A ZCS-PWM auxiliary...
To promote the wide acceptance of electric vehicles (EVs), the charging facilities should satisfy with some basic requirements, such as high efficiency, low harmonic pollution, long lifetime, low cost, and ease of bulk construction. Therefore, a novel EV charging facility — dc charging spot and a lower stress zero current switch-pulse width modulation (ZCS-PWM) Superbuck converter suitable for output...
In this paper, a novel ZCS-PWM control method for micro-turbine excitation control system is proposed. The method of main circuit parameters design is developed. And the timing of the main switch and the assistant switch in main circuit is calculated for achieving the excitation control in double IGBTs switching mode. The application in real world proves that switching loss is greatly reduced by using...
In this paper, a novel type of auxiliary active snubbing circuit assisted edge-resonant soft-switching pulse width modulation inverter is proposed for consumer induction heating equipments. The operation principle of this high frequency inverter is described using switching mode equivalent circuits. This newly developed series resonant high frequency inverter can regulate its high frequency output...
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