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A dual mode time-sharing inverter has higher efficiency than other type grid-connected inverter due to only one power stage of it working in high frequency state at any time. In this paper, small signal modeling of this inverter is carried out, which reveals that the control-to-grid current transfer function of this inverter has a right half plane zero at low frequency during the “Boost” operating...
This paper presents a two-stage acoustic resonance free electronic ballast for MHD lamps using peak-current control mode. The ballast is consisted of a PFC stage and a full bridge inverter to supply lamp with low-frequency square-wave current, which achieves acoustic resonance free operation. And due to the adoption of peak-current control mode, the current overshoot which is common during output...
A small-signal model for the asymmetrical half bridge flyback converter is presented. The effects of storage elements and peak current mode control on the transfer characteristics are investigated. The results show that the power stage of the studied converter is basically a fourth order system with two low-frequency poles and two high frequency poles. While the peak current mode control is applied,...
A small-signal model for the asymmetrical half bridge flyback converter is presented. The effects of storage elements and peak current mode control on the transfer characteristics are investigated. The results show that the power stage of the studied converter is basically a fourth order system with two low-frequency poles and two high frequency poles. While the peak current mode control is applied,...
Design method for an accurately regulated multiple output ZVS DC/DC converter is proposed. The converter is composed of three outputs altogether. The 1st and 3rd outputs are regulated through the duty cycle control of two asymmetrical half bridge converters, while the 2nd output is regulated through the phase shift of the two asymmetrical half bridge converters. The characteristic of the proposed...
PWM plus phase-shift (PPS) control technique is a technique combining PWM control technique and phase-shift control technique. PPS control bidirectional DC-DC converters have two regulating parameters, that is duty cycle D and phase-shift angles Phi. The paper proposed a new technique based on state-space averaging technique for modeling PWM plus phase-shift (PPS) controlled active clamping boost...
A ZVS three level two transistor forward DC/DC converter (input 600 V, output 48 V/50 A) is proposed. The performance of a 600 V/10 A silicon carbide (SiC) Schottky diode (Cree CDS10060) is experimentally evaluated on the prototype. Reverse recovery and overall efficiency are compared between the SiC diode and fast soft-recovery silicon power diode
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