Design of Single Input Fuzzy Logic Controller for Shunt Active Power Filter

ABSTRACT

This paper describes the application of single input fuzzy logic controller (SIFLC) for three-phase shunt active power filter. The advantage of the fuzzy logic controller is that it does not require mathematical modelling of the system. The application of two-input fuzzy logic controller to three-phase shunt active power filter is reported in literature. But the two-input fuzzy logic controller needs large set of rules for optimum performance. The SIFLC reduces conventional two-input fuzzy logic controller to single input fuzzy logic controller. The SIFLC offers a significant reduction in rule inferences and simplifies the tuning of control parameters. An SIFLC is designed for three-phase two-level active power filter. A shunt active power filter with SIFLC is simulated for nonlinear load in the MATLAB Simulink environment. The hysteresis controller is used to generate the switching pulses. The simulated response with SIFLC is found to be better than conventional fuzzy logic controller (CFLC). Also the execution time of SIFLC found to be lesser than CFLC. A prototype model of the active power filter is developed in the laboratory to validate the simulated response. An 1104 dSPACE is used to generate the appropriate pulses for the switches of active power filter.

Keywords:

• Active power filter
• CFLC
• Harmonics
• SIFLC

Additional information

Notes on contributors

Dhanavath Suresh

Dhanavath Suresh received his BTech degree in electrical and electronics engineering from Jawaharlal Nehru Technological University, Hyderabad, India in 2006 and MTech degree in power electronics from Jawaharlal Nehru Technological University, Anantapur, India in 2009. Currently, he is pursuing the PhD degree in the field of power quality in the department of electrical engineering, Indian Institute of Technology, Roorkee, India. His research interest includes power quality and multilevel inverter based active power filter.

E-mail: [email protected]

Sajjan Pal Singh

Sajjan Pal Singh received his BSc degree in electrical engineering from Aligarh Muslim University, Aligarh, India in the year 1978. He received his ME and PhD degrees in electrical engineering from Indian Institute of Technology, Roorkee, India in 1980 and 1994, respectively. Currently, he is a professor in the department of electrical engineering, Indian Institute of Technology, Roorkee, India. His research areas include electric machines and drives, power converters, power quality, active filters, and induction generator.

E-mail: [email protected]