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This paper deals with a new circuit prototype of two active edge resonant cells-assisted soft-switching symmetrical PWM half-bridge inverter type DC-DC high power converter employing a high frequency planar transformer with center-tapped secondary windings and rectifier with choke-input. Its operating principle is described in detail by using switching mode transition equivalent circuits which is...
In this paper, the novel circuit topology of half-bridge soft switching PWM DC-DC power converter with a high frequency planar transformer link was presented. The operating principle and switching pattern of the half-bridge soft switching PWM DC-DC power converter described for 40 kHz, 36 V and 400 A output were illustrated and discussed for low voltage and large current output applications such as...
This paper presents a new circuit prototype of two active edge resonant cells-assisted soft-switching symmetrical PWM half-bridge inverter type DC-DC high power converter employing a high frequency planar transformer with center-tapped secondary windings. Its operating principle is described in detail by using switching mode equivalent circuits which is determined under particular switching pulse...
This paper presents two new circuit topologies of voltage source-fed soft-switching PWM inverter using a high frequency transformer parasitic inductive components with full- bridge or half-bridge configuration, which are more suitable for utility AC 400 V-rms input mains. These circuits have each reverse conducting power semiconductor switching devices in series with high and low DC buslines, a single...
This paper presents two new circuit topologies of DC busline side active edge resonant snubber assisted soft-switching PWM high frequency AC link full-bridge DC-DC converter acceptable for 200V-rms and 400V-rms utility AC mains. All the power switches in the full-bridge arms and DC busline can turns on with ZCS turn-on and turn-off with ZVS and the switching power losses of all the switches can be...
In this paper, a novel type of auxiliary switched capacitor assisted edge resonant soft switching PWM resonant DC-DC converter with two auxiliary edge resonant lossless inductor snubbers. The operation principle of this converter is described using the switching mode equivalent circuits. This newly developed multi resonant DC-DC converter can regulate its dc output AC power under a principle of constant...
This paper presents a new circuit topology of DC bus line switch-assisted half-bridge soft switching PWM inverter type DC-DC converter for arc welder. The proposed power converter is composed of typical voltage source half-bridge high frequency PWM inverter with a high frequency transformer link in addition to DC bus line side power semiconductor switching devices for PWM control scheme and capacitive...
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