Title :
Conceptual study of a shunt power quality compensator
Author :
Wolanski, Zbigniew ; Ooi, Boon Teck
Author_Institution :
Dept. of Electr. Eng., McGill Univ., Montreal, Que., Canada
fDate :
4/1/1996 12:00:00 AM
Abstract :
This paper describes how the different methods of eliminating the power disturbances: (1) outages by shunt UPS action, (2) low frequency harmonic disturbances by the “virtual short circuit” principle, (3) swells/sags by the inductive/capacitive reactance principle, and (4) high frequency disturbance by passive filtering, can all be integrated into a single strategy based on reference voltage tracking control. The control law has been derived from first principles. Digital simulation results are presented to prove that the strategy fulfils the multi-functional requirements. The PWM converter which implements the control law is modelled as an ideal linear amplifier
Keywords :
PWM power convertors; compensation; digital simulation; electrical faults; multivariable control systems; power supply quality; power system analysis computing; power system control; uninterruptible power supplies; voltage control; PWM converter; VAr compensation; capacitive reactance; digital simulation; harmonic voltage distortion; high frequency disturbance; ideal linear amplifier; inductive reactance; low frequency harmonic disturbances; multi-functional requirements; multivariable control; passive filtering; phase lock loop; power disturbances elimination; reference voltage tracking control; sags; shunt UPS action outages; shunt power quality compensator; swells; virtual short circuit; Circuits; Digital simulation; Filtering; Frequency; Passive filters; Power harmonic filters; Power quality; Power system harmonics; Uninterruptible power systems; Voltage control;
Journal_Title :
Power Delivery, IEEE Transactions on
