Análisis y diseño de un convertidor CD-CD con integración de componentes parásitos para mejorar su eficiencia

Abstract

Nowadays, the power converters systems seek to improve the efficiency through the use of new generation devices and modern control techniques. Development of new topologies and new manufacturing materials, has allowed its applications in systems of maximum reliability. The development of this thesis is focused on the analysis and design of a converter circuit, which using a DC supply, be able to charge a battery bank for an electric transportation system, regulating the output voltage and maintaining a fixed switching frequency. In order to improve the efficiency of the converter, it makes use of stray capacitance of the transistors and the transformer stray inductance, which together with leakage inductance of the circuit itself, can reduce losses in switching devices through zero voltage transitions. The use of a phase-shift modulation and a current control strategies, allow rejecting disturbances in the supply voltage, while maintaining constant output voltage for an operating range