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Assessment of Direct and Indirect Current Control Techniques Applied to Active Power Filters

[ Vol. 13 , Issue. 8 ]

Author(s):

Mohamed Adel* and Tarek Kandil   Pages 1256 - 1265 ( 10 )

Abstract:


Background: In this paper, an assessment of active power filter (APF) performance is presented under direct and indirect current control schemes through on-line compensation theory.

Methods: Conventional Direct Current Control (DCC) measures both load current and filter current beside source and DC-link voltages, while Indirect Current Control (ICC) measures only source current beside voltage measurements. Both DCC and ICC control algorithms are implemented using 80C196KC low-cost microcontroller.

Results: The performance parameters of APF are compared under two methods, and it is assigned that ICC gives a better performance with lower cost due to reduced number of sensors. The DC-link output voltage is controlled through simple PI-controller, and the PWM switching signals required by APF power circuit is obtained by hysteresis current controller.

Conclusion: The comparative simulation and experimental results exhibit that performance of APF due to ICC scheme is superior than DCC one.

Keywords:

Active power filter, direct current control, indirect current control, harmonic distortion, reactive power, sinusoidal reference waveform.

Affiliation:

Department of Electrical Engineering, Jouf University, Sakaka, Department of Electrical Engineering, Jouf University, Sakaka



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