Authors: A. Elnady; Yanfei Liu
Addresses: University of Sharjah, P.O. Box 27272, Sharjah, UAE; RMC-Canada, P.O. Box 17000, Station Forces, Kingston, ON, K7K 7B4, Canada. ' Queen's University, 19 Union Street, Walter Light Hall, Kingston, Ontario K7L 3N6, Canada
Abstract: This paper presents an innovative implementation of the recursive Gauss-Newton (GN) algorithm for extraction of the common current quality problems such as the current harmonics and current fluctuation. This paper introduces also the utilisation of the adaptive notch filters to efficiently track the unknown frequencies of the current disturbances. The paper exhibits the mitigation results for these current disturbances using a shunt power conditioner. Furthermore, the adopted shunt power conditioner is operated by the ramp-comparison current regulator. Also, the paper proves that the utilisation of the ramp-comparison current controller, (the linear current controller), is more meritorious than the commonly used current controller, which is the hysteresis current controller, (HCC). The effectiveness of the developed extraction technique with the employed current controller is verified by the simulation and experimental results.
Keywords: ramp-comparison current regulators; recursive Gauss-Newton; current quality disturbances; shunt power conditioners; current harmonics; current fluctuation; adaptive notch filters; simulation.
International Journal of Power Electronics, 2012 Vol.4 No.1, pp.94 - 117
Accepted: 12 Apr 2011
Published online: 10 Dec 2011 *