基于DSP和CPLD的三相PWM整流器设计

Design of Three-phase PWM Rectifier Based on DSP and CPLD

结合三相电压型PWM整流器的数学模型,对整流器控制策略进行了研究,设计了基于PI调节器的电流内环和电压外环的双闭环控制策略,并以DSP和CPLD为核心构建PWM整流器控制系统,给出了具体硬件电路和详细软件流程。实验结果表明,该PWM整流器可有效抑制谐波,实现网侧单位功率因数控制,具有优越的动静态性能。

Based on the mathematic model of a three-phase PWM rectifier,the paper studies the control strategy of rectifier.A double closed-loop control system based on current and voltage closed-loop of PI regulator is designed.A digital controll system based on DSP and CPLD is constructed and the design methods of hardware and software are pre-sented.The experimental results show that the rectifier could effectively restrain the harmonic pollution and the system presents better dynamic and static performances.