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This paper proposes a new soft-switched High Step-up DC-DC converter for energy storage systems in DC traction vehicles. In this converter, soft-switching operation, i.e., zero current switching has been obtained by employing dual resonant auxiliary circuits to the conventional step-up DC-DC converter. The auxiliary resonant consists of additional auxiliary switches; inductor and capacitor are used...
This paper presents a three-phase isolated soft-switching dc-dc converter suitable for high-power applications. Three-phase star-connected high-frequency transformers provide isolation between input and output. Primary-side of the converter consists of three-phase inverting bridge with reverse-blocking switches. Secondary-side consists of three-phase diode bridge followed by dc output capacitors,...
Electrification of vehicle accessories often requires the application of low voltage high current step up DC-DC converter with a high voltage gain ratio qualified for use in an automotive environment. The proposed topology provides step-up on low voltage side that reduces the transformer turns ratio, leading to a simplified transformer design with reduced cost and increased efficiency which is especially...
This paper proposes a new ZVT-ZCT bidirectional DC-DC converter for energy storage systems in DC traction vehicles. The conventional hard-switched converter have turn-on/off losses which may affect the overall converter efficiency. The proposed converter utilizes an auxiliary circuit with resonant inductor, capacitor and diodes. This converter has two important features like zero-voltage transition...
Multi-port dc-dc converters with high-voltage gain have been researched due to increasing demands. In recent years, multiport (multi-input-multi-output) dc-dc convertors are widely used in automotive systems. The Portable consumer products consists of different submodules and they require varied voltage or current levels of power supplies. The main objective of this project is to simulate and implement...
This paper proposes a circuit that combines the class E inverter with DC-DC converter so as to provide dual controllable outputs. This study is motivated because the industrial equipment often needs different voltage sources to operate, yet with an inadvertent choice of parameters in the isolated converters, the voltage quality is often highly affected. Therefore, by connecting an auxiliary power...
A novel zero-voltage-switching pulse-width-modulated (ZVS-PWM) flyback dc/dc converter with an auxiliary resonant circuit is presented in this paper. The proposed circuit topology adopts the traditional pulse-width-modulated flyback converter with an auxiliary resonant circuit. In the auxiliary resonant circuit, the resonant inductance and the resonant capacitance is operated as a resonant circuit...
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