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分析和推导了交交变频传动系统中环流与无功的关系 ,给出了无功检测与控制原理 ,采用基于环流调节的无功控制方法设计了数字式有环流交交变频异步机传动矢量控制系统 ,并在 Matlab中 Simulink环境下进行系统仿真 .仿真结果表明系统具有很好的无功控制效果和较高的伺服性能 .
The relationship between circulating current and reactive power in AC drive system is analyzed and deduced. The principle of reactive power detection and control is given. A digital vector control system of circulating AC asynchronous motor is designed using reactive power control based on circulating current regulation. The simulation results show that the system has good reactive power control and high servo performance under Simulink environment in Matlab.