Simulation of SRF Control Based Shunt Active Power Filter and Application to BLDC Drive
V. Harish1, R. Srinivas Rao2

1V. Harish, PG Student, Department of Electrical and Electronics Engineering, Gokul Group of Instituions Bobbili, Vizianagaram, (A.P), India.
2R. Srinivas Rao, Assistant Professor, Department of Electrical & Electronics Engineering, Gokul Group of Instituions, Bobbili, Vizianagaram, AP, India.
Manuscript Received on July 01, 2015. | Revised Manuscript Received on July 20, 2015. | Manuscript published on July 20, 2015. | PP: 47-51 | Volume-3 Issue-8, July 2015. | Retrieval Number: F0630053615/2015©BEIESP
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Abstract: With the widespread use of harmonic generating devices, the control of harmonic currents to maintain a high level of power quality is becoming increasingly important. An effective way for harmonic suppression is the harmonic compensation by using active power filter. This paper presents a comprehensive survey of active power filter (APF) control strategies put forward recently. It is aimed at providing a broad perspective on the status of APF control methods to researchers and application engineers dealing with harmonic suppression issues. Many control techniques have been designed, developed, and realized for active filters in recent years. This paper presents different types of Synchronous reference frame methods for real time generation of compensating current for harmonic mitigation and reactive power compensation. All the techniques are analyzed mathematically and simulation results are obtained which are being compared in terms of its compensation performance with different parameters under steady state condition. The three techniques analyzed are the Synchronous Reference Frame Theory (SRF), SRF theory without synchronizing circuit like phase lock loop (PLL) also called instantaneous current component theory and finally modified SRF theory. Simulation results are obtained under sinusoidal balanced voltage source balanced load condition. The comparison and effectiveness of all the methods is based on the theoretical analysis and simulation results obtained with MATLAB employing a three phase three wire shunt active filter test system. Finally shunt active power filter is applied to BLDC drive application. THD plots with and without APF is presented.
Keywords: Synchronous Reference Frame, instantaneous current component theory, Modified SRF, Active Filter, Harmonics. BLDC Drive