Research articleDesign and real time implementation of fuzzy switched controller for single phase active power filter

- Fuzzy switched controller (FSC) in DC-bus voltage regulation loop has been proposed.
- Analysis, design, simulation and implementation of the FSC have been done.
- Real time implementation of the improved FSC-DCC algorithm around dSPACE 1104 board.
- Power quality improvement and unity power factor have been achieved.

This paper proposes a novel fuzzy switched controller (FSC) integrated in direct current control (DCC) algorithm for single phase active power filter (SPAPF). The controller under study consists of conventional PI controller, fractional order PI controller (FO-PI) and fuzzy decision maker (FDM) that switches between them using reduced fuzzy logic control. The proposed controller offers short response time with low damping and deals efficiently with the external disturbances while preserving the robustness properties. To fulfill the requirements of power quality, unity power factor and harmonics limitations in active power filtering an experimental test bench has been built using dSPACE 1104 to demonstrate the feasibility and effectiveness of the proposed controller. The obtained results present high performance in steady and transient states.