基于DSP+CPLD的多工况大功率电源的设计与实现

Design and realization of large power supply under multiple working conditions based on DSP&CPLD

以DSP+CPLD为核心的控制系统具有体积小、实时性好、控制精度高等特点。针对某研究所大功率电源多工况的特点,提出了一种基于DSP(TM S320F2812)和CPLD(EPM 1270T144)的整流器及其控制系统的设计方案。通过控制整流器之间的串并联组合,使电源能适应不同工况的要求,而DSP和CPLD主要实现系统的软件控制功能。试验结果表明,该电源满足多工况要求,工作稳定,能实现稳压稳流且纹波小。

The control system with DSP CPLD as the core possesses the following features： small volume,good real-time and high control precision.According to the characteristics of the multiple working conditions of large power supply by a research institute,a rectifier and control system based on DSPCPLD was proposed in this paper.By the way of controlling the series and parallel combinations of rectifiers,the large power supply could adapt the requirements of multiple working conditions.The DSP CPLD undertook the software control function of rectifier control system.The test results show that this large power supply can adapt the requirements of multiple working conditions;works steadily;outputs stable voltage,stable current,and hardly ripple.