Title :
A quasi-instantaneous reactive power compensator for unbalanced and non-sinusoidal three-phase systems
Author :
Nabae, Akira ; Tanaka, Toshihiko
Author_Institution :
NPE Res. Lab., Yokohama, Japan
Abstract :
This paper discusses the merits and demerits of the instantaneous reactive power compensator, and proposes a new quasi-instantaneous reactive power compensator which is suitable for unbalanced and nonsinusoidal three-phase power systems. It compensates individual-phase reactive currents quasi-instantaneously, being different from the instantaneous reactive power compensator or a conventional reactive power compensator based on the average value concept. The basic principle of the proposed quasi-instantaneous reactive power compensator is discussed in detail. Simulation results demonstrate the novelty of the proposed reactive power compensator where the power factor of each phase becomes unity on the source side, but the source currents remain unbalanced
Keywords :
control system analysis; harmonic distortion; power system control; power system harmonics; power system stability; reactive power control; static VAr compensators; VAr compensation; VAr control; basic principle; control simulation; individual-phase reactive currents; quasi-instantaneous reactive power compensator; unbalanced nonsinusoidal three-phase power systems; unbalanced source currents; unity power factor; Circuits; Energy storage; Laboratories; Magneto electrical resistivity imaging technique; Power system harmonics; Power systems; Reactive power; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 1998. PESC 98 Record. 29th Annual IEEE
Conference_Location :
Fukuoka
Print_ISBN :
0-7803-4489-8
DOI :
10.1109/PESC.1998.701994