Adaptive fuzzy controlled hybrid shunt active power filter for power quality enhancement
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ORIGINAL ARTICLE
Adaptive fuzzy controlled hybrid shunt active power filter for power quality enhancement Alok K. Mishra1 • Prakash K. Ray2
•
Ranjan K. Mallick1 • Asit Mohanty2 • Soumya R. Das3
Received: 16 October 2019 / Accepted: 8 May 2020 Ó Springer-Verlag London Ltd., part of Springer Nature 2020
Abstract A novel switching pulse generation methodology based on adaptive fuzzy hysteresis current controlled hybrid shunt active power filter (A-F-HCC-HSAPF) is presented in this paper for compensating reactive power and harmonics in distribution network. The harmonic problems are mainly evolved because of extensive use of nonlinear loads in industry and domestic sectors. There are some adverse effects of harmonics such as: malfunctioning of sensitive equipment, resonance issues, conductors heating, power losses and reduced efficiency in distribution system. To mitigate harmonics issues passive, filters are used but when the harmonic component increases the design of passive filters is complex and becomes bulky. With the advancement in power electronic, the active power filter has been designed. Generally, the rating of the active filter is very high for some applications; hence hybrid shunt active power filter (HSAPF) is proposed by low-rated shunt active power filter (SAPF) and low-cost shunt passive filter. Proportional-integral or fuzzy logic controller is used to estimate the reference current and to regulate the dc capacitor voltage. To generate the switching pulse for the voltage source inverter of the SAPF, a novel adaptive fuzzy hysteresis current controller (A-F-HCC) is adopted. The performance of the proposed A-F-HCC-HSAPF is investigated during steady-state and transient conditions using MATLAB/Simulink and real-time environments. Keywords Adaptive fuzzy hysteresis current controller Harmonic compensation hybrid shunt active power filter Power quality
1 Introduction Nowadays the improvement in power quality (PQ) is an important challenge in the field of power distribution system. Generally, the devices used in the load end such as switched mode power supply (SMPS), arc furnaces, uninterruptible power supply (UPS), adjustable speed drives (ASDs), and other power electronic devices are nonlinear in characteristics. These loads are the cause of different PQ problems including harmonics in source/load voltages and & Prakash K. Ray [email protected] 1
Department of Electrical and Electronics Engineering, ITER, SOA University, Bhubaneswar, Odisha, India
2
Department of Electrical Engineering, CET, Bhubaneswar, Odisha, India
3
Department of Electrical Engineering, IIIT, Bhubaneswar, Odisha, India
currents which badly affect the system efficiency, security, and reliability [1]. Therefore, many research works are carried out using different custom power devices (CPD) for improving the PQ of the system. The simplest and economical solution is the use of passive filters (PFs) [2] for PQ improvements. But, the PFs are sometimes become ineffective due to their
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