储能逆变器并网/孤网双模式控制策略研究

研究了一种可并网/孤网双模式环境下发电的储能逆变器系统,建立了其系统仿真模型,在并网时采用电流源运行模型,孤网时采用电压源运行模型,在两种模式下基于空间电压矢量脉宽调制(SVPWM)方式分别设计了相应的控制策略,且为了能在并网/孤网两种模式切换过程中实现平滑过渡,提出了相应的切换算法。并利用Matlab/Simulink对两种控制策略及切换算法进行仿真试验,仿真结果证明了该控制策略的有效性,并且易于实现。

Research on Double Mode of Gird-connected and Micro-gird Control Strategy of Storage Inverter

A battery energy source inverter is researched, which can be operated both in gird-connected and micro-gird mode. The model of system simulation is establishment. And the system is controlled as a current source model in gird-connected and a voltage source model in micro-gird. Respectively, an appropriate control strategy is designed based on space voltage vector pulse width modulation （SVPWM） in two modes. An algorithm, which controls the inverter to transfer seamlessly between gird-connected mode and micro- gird mode, is present. The control strategies and the algorithm are stimulated in Matlab/ Simulink and the simulation results show the effectiveness of control strategies, and easy to implement.