## MATLAB软开关电源的设计与仿真研究

soft switch power source design and simulation
Abstract：soft switch power supply switch devices in the open or shut off the process, or add to the voltage is zero, namely the zero voltage switch, or through the switch device of current is zero, namely the zero current switch. This switch mode of reduced significantly in the process of the switch of the switch loss arouses oscillation, can greatly improve the switch frequency, for the miniaturization of switch power supply, high efficiency to create the conditions. Resonant converters, quasi resonant flyback converter, more resonant converters, zero voltage switch the pulse width of converter, and zero current pulse width converter switch tone, zero voltage conversion pulse the wide converter, and zero current pulse adjustable wide conversion converter, and zero phase shifting control voltage dc/dc conversion of the whole bridge converter, and zero current transition phase shifting control dc/dc converter the whole bridge.
Phase shifting control zvzcsPW MDC/DC bridge ahead of the converter bridge arm can realize zero voltage switch, lag bridge arm can realize zero current switch. MATLAB software with their control performance simulation and analysis. Understand the process of its main.

KeyWords: soft switch; Phase shift control; Bridge converter

1 绪论    1
2 直流开关电源的软开关技术及其新发展    3
2.1 谐振变换器    3
2.2  准谐振变换器和多谐振变换器    3
2.3 零开关PWM变换器    4
2.4.1  ZVT-PWM变换器    4
2.4.2 ZCT-PWM软开关变换器    5
2.5  ZVZCT-PWM软开关变换器    5
3 直流开关电源的结构类别分析和全桥结构    9
3.1基本变换器电路结构与拓扑    10
3.1.1Buck电路    10
3.1.2 Boost电路    12
3.1.3  Buck-Boost电路    14
4 移相控制ZVZCS全桥变换器的实现以及系统仿真分析    18
4.2 软开关变换电路的原理    18
4.3  MATLAB软件的介绍    20
4.3.1 MATLAB产生的历史背景    20
4.3.2 MATLAB的语言特点    21
4.3.3 MATLAB仿真软件简介    22