A new control strategy for active power line conditioner (APLC) using adaptive notch filter

• Published in: International journal of electrical power & energy systems Vol. 47; no. 1; pp. 31 - 40
• Main Authors: Ketabi, Abbas, Farshadnia, Mohammad, Malekpour, Majid, Feuillet, Rene
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.05.2013; Elsevier
• Subjects: Active control; Adaptive notch filter; Algorithms; Applied sciences; Capacitors. Resistors. Filters; Compensation; Electric potential; Electric power; Electric power generation; Electrical engineering. Electrical power engineering; Electrical machines; Electrical power engineering; Engineering Sciences; Exact sciences and technology; Harmonics; Miscellaneous; Networks; Power flow control; Power networks and lines; Power quality; Regulation and control; Shunt active filter; Strategy; Theory. Simulation; Unbalanced conditions; Various equipment and components; Voltage; Unbalanced conditions; Harmonics; Shunt active filter; Adaptive notch filter; Power quality; Power flow control; Waveform; Electric energy transportation; Adaptive algorithm; Current source converter; Power system harmonics; Power system stability; Harmonic analysis; Power supply; Controlled voltage source; Adaptive control; Hysteresis loop; Reactive power; Notch filter; Energy characteristic; Power conditioning circuits; Harmonic distortion; Shunt; Control system; Adaptive filter; Three phase current; Voltage source converter; Three phase circuit; Service quality; Power transmission line
• ISSN: 0142-0615; 1879-3517
• DOI: 10.1016/j.ijepes.2012.10.063

► A new adaptive control is proposed for a shunt active power-line conditioner. ► The reference currents are formed by means of modified adaptive notch filters. ► The parameters of the VSC controller are obtained using DE algorithm. ► The proposed strategy is very simple and easily implementable. This paper proposes a new adaptive control algorithm for a three-phase current-source shunt active power-line conditioner (APLC) operating under unbalanced and distorted network conditions. This control scheme aims at compensation of network’s reactive power, elimination of active power’s oscillating components, compensation of network current and voltage harmonic contents resulting in sinusoidal waveforms, and equilibrating the drawn power from the source evenly between the three-phases. Unlike many of the existing methods, the proposed strategy does not require any coordinate transformations or complicated calculations. The reference signals for the hysteresis-band current controlled voltage-source converter (HBCC-VSC) are generated by passing the measured current and voltage signals through two layers of modified adaptive notch filters (ANFs). To ensure superb performance and minimum total harmonic distortion (THD) level of the power system, parameters of the HBCC-VSC are obtained using differential evolution (DE) optimization algorithm. The proposed strategy is simple, easily implementable, and robust against uncertainty or variations of power system parameters and loads. The effectiveness of the proposed control scheme is validated by simulation results of a selected network under various load and power system conditions.