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本文设计了基于数字信号处理器TMS320F2812的全数字并联型有源电力滤波器的控制系统。采用DSP作为嵌入式操作系统μC/OS-Ⅱ硬件平台的核心微处理器,完成并联型有源滤波器控制系统的算法实现,谐波电流的提取和指令电流的计算采用ip-iq法,利用SVPWM控制方法将谐波电流指令信号转化为脉宽指令控制逆变器产生补偿电流。实验结果表明该控制系统能够很好的完成负载电流谐波分离和空间矢量PWM控制,具有良好的工作特性。
In this paper, based on the digital signal processor TMS320F2812 all-digital parallel active power filter control system. Using DSP as the core microprocessor of embedded operating system μC / OS-Ⅱ hardware platform, the algorithm of parallel active power filter control system is completed. The harmonic current extraction and command current calculation are performed by ip-iq method. The SVPWM control method converts the harmonic current command signal into a pulse width command to control the inverter to generate the compensation current. The experimental results show that the control system can well perform load current harmonic separation and space vector PWM control with good operating characteristics.