Effect of Supply Voltage Harmonics on IRP-Based Switching Compensator Control

• Published in: IEEE transactions on power electronics Vol. 24; no. 2; pp. 483 - 488
• Main Author: Czarnecki, L.S.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01-02-2009; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Active harmonic filters; active power filters; Algorithms; Analysis; Applied sciences; Circuit properties; Circuit theory; Compensators; currents' physical components (CPCs); Distortion; Electric potential; Electric power; Electric, optical and optoelectronic circuits; Electrical engineering. Electrical power engineering; Electrical power engineering; Electronic circuits; Electronic equipment and fabrication. Passive components, printed wiring boards, connectics; Electronics; Exact sciences and technology; Filters; Frequency filters; harmonic suppression; Harmonics; instantaneous reactive power (IRP); Power electronics, power supplies; Power filters; Power generation; Power harmonic filters; Power networks and lines; Power system harmonics; Power system modeling; Reactive power; Reactive power control; Reference signals; Signal generators; Switching; Theory; Theory. Simulation; Voltage; Voltage control; Power system harmonics; Power system stability; Harmonic analysis; Power supply; Ideality; Reactive power; active power filters; Switching conditions; Compensator; Active filter; Energy quality; Harmonic distortion; Power factor; Distribution network; Active harmonic filters; harmonic suppression; Power electronics; Algorithm; Switching; Power harmonic filters; Power filters; Harmonics suppression; Electrical network; Band stop filter; instantaneous reactive power (IRP); Service quality; currents' physical components (CPCs)
• ISSN: 0885-8993; 1941-0107
• DOI: 10.1109/TPEL.2008.2009175

The instantaneous reactive power (IRP) p-q theory is one of the major theoretical tools for the development of algorithms for generating reference signals for control of switching compensators, commonly known as active harmonic or power filters. This paper presents results of study on how the supply voltage harmonics affect the reference signal that is generated using the IRP approach. According to this approach, the compensator should also compensate, apart from the IRP, the alternating component of the instantaneous active power of the load. The paper, however, demonstrates that in the presence of the supply voltage harmonics, an ideal, unity-power-factor load has an instantaneous active power with a nonzero alternating component. According to the IRP-based approach, it should be compensated, and this requires that a distorted current be injected into the distribution system. Thus, the conclusion of the IRP p-q theory that the instantaneous active power of ideally compensated loads should be constant is generally not true. The currents' physical components (CPC) power theory is the main theoretical tool for the presented analysis.