基于DSP,FPGA,CPLD三电平高压变频器控制系统

三电平高压变频器的开关器件较多,拓扑结构相对复杂,因此逆变桥控制电路的设计是装置研发中的重点.提出了一种基于数字信号处理器(Digital Signal Processing,简称DSP),现场可编程门阵列(Field Programmable Gate Array,简称FPGA)和复杂可编程逻辑器件(Complex Programmable Logic Device,简称CPLD)的新型控制系统硬件结构;介绍了该结构的设计思想和主要特点.在此基础上,通过DSP完成了改进的恒U/f控制策略,同时利用FPGA和CPLD实现了高性能全数字化的正弦脉宽调制(Sine Pulse Width Modulation,简称SPWM)信号发生、检测和故障闭锁.仿真和试验结果证明,所提出的硬件平台和控制方法具有更加安全、稳定和高效的性能,能够满足工程应用的要求.

Design of Control System used for High-voltage Three Level NPC Inverters based on DSP, FPGA and CPLD

Because of adopting many switching devices and complicated topology structure,the design of inverter's control system becomes one of the important parts in the research.This paper proposes a new configuration of control sys-tem hardware based on DSP,FPGA and CPLD and also introduces the design principle and characteristic.The DSP carries out the U/f control strategy,and the FPGA with CPLD carry out the generation,checking-up and closing down of the SP-WM trigger signal.Through simulation and experiment,the control system and control method are proved to be more sec-turity,stability and high-powered.It can fulfill the requirements of industrial application.