Direct power control method of three-phase static reactive-power synchronous compensator
A synchronous compensator, three-phase static technology, applied in the direction of reactive power adjustment/elimination/compensation, flexible AC transmission system, etc., can solve the complex design of controller parameters, the difficulty of adjusting the AC volume without static difference, and difficult engineering implementation issues
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[0023] Such as figure 1 As shown, the STATCOM device used in the present invention includes a voltage-type inverter composed of six IGBTs VT1-VT6, a detection circuit, a control circuit, a drive circuit, a connection reactance L, a DC side capacitor C, and the like. The detection circuit collects 6 channels of AC current signals and DC side capacitor voltage signals, and sends the collected signals to the control circuit; then the control circuit generates 6 channels of pulse control signals according to the given control method and the collected current and voltage signals; finally, According to the pulse control signal, the driving circuit amplifies the voltage and power through the driving circuit, and then drives the gates of the six IGBTs of VT1~VT6 in sequence, so that the main circuit outputs the required compensation current, and the compensation current is different from the reactive current of the load at any time. Equal and opposite in direction, so as to fully comp...
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