基于DSP的静止同步补偿器软硬件设计

根据配电网无功功率补偿的工程要求,提出了一种基于DSP的静止同步补偿器(STATCOM)软硬件设计方法。所采用的方案是将三相电压型逆变器输出的电压经输出滤波器滤波后通过耦合变压器并入电网,在直接电流控制方式下达到维持公共连接点(PCC)电压恒定的目的。重点介绍了基于TMS320LF2407型DSP的STATCOM装置控制器的研制,给出了DSP控制器中锁相环同步采样电路、PWM脉冲发生及硬件互锁电路I、PM模块驱动电路等关键硬件电路的详细设计方法,并且设计出了STATCOM系统的软件功能模块。实验结果表明,基于该设计方法的STATCOM装置能维持公共连接点电压稳定在给定值附近,有着较好的无功功率补偿效果。

Software and Hardware Design of the STATCOM based on DSP

According to the requirement of reactive power compensation,the paper presents a software and hardware design method of the STATCOM based on DSP.In order to stabilize the PCC voltage around a prescribed value,the three-level converter of three phase bridge of the equipment in main circuit was connected to power net with coupling transformer.The paper researchs on the STATCOM based on DSP(TMS320LF2407),and presents a software and hardware design method.The STATCOM based on such method has been applied in an experimental flat roof.The detecting results show that the STATCOM meets the requirement of the design and the reactive power compensation effect is obvious.