基于 DSP数字控制的零电压全桥三电平 DC-DC变换器实验装置研制

摘要

A-setting-of-three-level-ZVS-DC-DC-converter-based-on-DSP-is-developed-.This-experimental-setting-provides-a-chance-for-study-and-practice-of-multi-level-and-soft-switching-technology-in-the-power-electronics-technology-.The-experimental-device-is-improved-based-on-full-bridge-DC-DC-converter-by-joining-the-three-level-and-ZVS-technology-.The-device-can-achieve-ZVS-of-MOSFET-by-using-phase-shift-and-chopper-and-DSP-controller-.The-experimental-device-is-technologically-advanced-,-safe-,-reliable-and-easy-to-operate-.-It-is-particularly-suitable-for-application-in-the-experimental-teaching-,so-that-students-can-operate-by-themselves-to-see-the-corresponding-experimental-waveforms-of-the-three-level-and-soft-switching-technology-.This-paper-focuses-on-analyzing-the-working-principle-and-the-design-of-system-of-the-converter-.%设计并开发了一种基于DSP控制的零电压全桥三电平DC-DC变换器。该实验装置是对电力电子技术中多电平和软开关技术的学习和实践，是在全桥结构DC-DC变换器的基础上进行改进，加入了三电平技术和ZVS技术。以DSP为控制器，通过采用移相斩波的控制方法，实现各只MOS管零电压开关。该实验装置具有技术先进、安全可靠、操作简便等优点，尤其适合在实验教学中应用，让学生动手实践，测量观察三电平和软开关技术的相应实验波形。重点分析了变换器的工作原理以及系统的设计方案。