A variable structure controller for Static var Compensator (SVC) which can improve power Angle stability of power system and local voltage characteristics of SVC is proposed.
The result of simulation shows that the proposed variable structure controller can improve dynamic characteristics of system more effectively in contrast to conventional voltage controller of SVC.
仿真结果表明：与常规电压型SVC控制器相比，SVC变结构控制器能有效地改善系统的动态特性。
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The medium voltagevariable-frequency controller is developed for the variable-frequency against the existing problem during application of submersible pump.