基于RTDS和物理控制器的动态电压调节器研究

Research on DVR Based on RTDS and Real Controller

为更好地实现动态电压调节器(DVR)数字化控制,从单相串联主拓扑结构出发,以电压完全补偿为目标,采用负荷电压反馈和滤波电容电流反馈的双闭环控制方式,开发了以FPGA为核心的实际物理控制器,详细介绍了增量式数字PI调节器、移相载波发生、PWM脉冲产生及死区控制等模块的设计实现,最后利用实时数字仿真(RTDS)建立了单相串联直接注入型主电路模型,并通过其多路模拟输出和数字输入接口连接到实际物理控制器,联合实验结果证实了实际物理控制器方案的可行性和有效性。

For the better application of digital control to the dynamic voltage regulator （DVR）, based on the single phase series main circuit topology, a physical controller based on FPGA is developed by applying the fully compen- sation strategy and load voltage as well as capacitor current dual-loop control algorithm.The design of some functional blocks are described, such as the incremental form of the PI module, phase-shift carrier generator, PWM pulse output module and dead time control unit.Finally a single phase series main circuit model is established in real-time digital simulator（RTDS） ,to which,the physical controller is connected within multiple analog outputs and digital inputs,the fe- asibility and effectiveness of the physical controller scheme are verified by results of joint experiment.