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Abstract
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Article Information:
Hybrid Controller for Three Level Shunt Active Power Filter to Reduce Supply Current Harmonics for Power Quality Improvement
Elango Sundaram and Manikandan Venugopal
Corresponding Author: Elango Sundaram
Submitted: January 31, 2015
Accepted: March 7, 2015
Published: June 15, 2015 |
Abstract:
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Shunt Active Power Filter (SAPF) of electric power has become a grown-up technology for mitigating supply current harmonics and compensation of reactive power in the grid. In this study, a combined Proportional Integral (PI) and Fuzzy Logic Controller (FLC) are proposed to extract required reference current of the SAPF for balanced, unbalanced with static and dynamic conditions. The DC bus voltage of three level diode clamped multilevel PWM inverter functioning as a SAPF is maintained at stable value by regulating the current error using the conjunction of PI and FLC algorithm. Switching pulses for the multilevel inverter are generated from the sampled reference phase voltage magnitudes as in the case of conventional space vector PWM. The implementation of PI and FLC algorithm is executed using MATLAB fuzzy logic tool box. The simulation results shows that, the proposed model provides with low harmonic content in supply side and necessary reactive power is supplied to the Point of Common Coupling (PCC) thereby power factor of the system is improved in both static and dynamic conditions.
Key words: Active power filter, fuzzy logic, harmonics, power factor, proportional integral, reactive power,
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Cite this Reference:
Elango Sundaram and Manikandan Venugopal, . Hybrid Controller for Three Level Shunt Active Power Filter to Reduce Supply Current Harmonics for Power Quality Improvement. Research Journal of Applied Sciences, Engineering and Technology, (5): 581-590.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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