Significant insights into the operation of DC-link voltage control of a shunt active power filter using different control algorithms: a comparative study

Authors : NOR FARAHAIDA ABDUL RAHMAN, MOHD AMRAN MOHD RADZI, AZURA CHE SOH, NORMAN MARIUN, NASRUDIN ABD RAHIM

Pages : 2033-2043

View : 17 | Download : 9

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :A comparative study between a conventional DC-link voltage control algorithm insert ignore into journalissuearticles values(CDVCA); and a self-charging DC-link voltage control algorithm insert ignore into journalissuearticles values(SDVCA); is presented. It focuses on the principle operation of both algorithms and their impacts on the performance of a shunt active power filter insert ignore into journalissuearticles values(SAPF); operation. All analyses are based on the step response of DC-link voltages under different start-up times of the SAPF and different initial DC-link voltage values. Other considered parameters are the ripple factor insert ignore into journalissuearticles values(RP); of DC-link voltages, estimated and measured DC-link charging currents, and total harmonic distortion insert ignore into journalissuearticles values(THD); value of supply currents. Thus, this study provides new insights into the operation of DC-link voltage control using different control algorithms. According to the simulation results, the SAPF using the SDVCA has shown better performance than using the CDVCA. By using the SDVCA, the charging process of a DC-link capacitor starts almost instantaneously. Additionally, the overshoot, settling time, and RF of DC-link voltages are reduced. Other than that, THD values of supply currents are improved, by generating low ripple of estimated DC-link charging currents. Experimental validation of the SAPF using the SDVCA is also presented.
Keywords : Conventional DC link voltage control, harmonic compensation, self charging DC link voltage control, shunt active power filter