Title :
A solid state VAR compensator with fast dynamic response
Author :
Joos, Geza ; Moran, Luis ; Ziogas, Phoivos
Author_Institution :
Dept. of Electr. Eng., Concordia Univ., Montreal, Que., Canada
Abstract :
The performance of a three-phase solid-state reactive power compensator with fast dynamic response is analyzed. The compensator consists of a three-phase pulse-width-modulated voltage-source inverter connected to a self-controlled DC bus. The principal advantage of this scheme is that it can maintain a near-unity source power factor without sensing and computing the associated reactive power component. It can also substantially reduce the harmonic content of the input line current when the load is nonlinear. A mathematical model for the compensator connected across a variable power factor load is derived. The frequency response is obtained for open-loop operation which allows for design of the controller. Predicted results are verified experimentally
Keywords :
invertors; power systems; pulse width modulation; reactive power; static VAr compensators; fast dynamic response; frequency response; harmonic content; input line current; mathematical model; open-loop operation; pulse-width-modulated voltage-source inverter; reactive power compensator; self-controlled DC bus; solid state VAR compensator; three-phase; Frequency response; Inductors; Mathematical model; Performance analysis; Power system harmonics; Pulse inverters; Pulse width modulation inverters; Reactive power; Solid state circuits; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 1989. PESC '89 Record., 20th Annual IEEE
Conference_Location :
Milwaukee, WI
DOI :
10.1109/PESC.1989.48515
