Hardware In Loop Cosimulation of LMS Algorithm for Shunt Active Filter to Mitigate Harmonics and Reactive Power - Xilinx System Generator Approach

Abstract

This paper describes the development of control algorithm for Shunt Active filter using Xilinx system generator. The performance of the shunt active filter depends mainly on the reference current generator and pulse generator which switches the active devices. This maintains the supply current as near to unity power factor and sinusoidal. The reference current is generated by many control algorithms like pq theory, FFT method, synchronous reference frame theory (SRF) etc., these algorithms are developed in digital simulator and prototyping DSP/FPGA board. In this paper, an adaptive filter is developed in system generator tool box in MATLAB and Spartan 6 FPGA Board is used as Hardware In Loop (HIL) system. The adaptive filter extract the fundamental real component of the load current and voltage control loop generates the reference current. The indirect current control technique is adopted and the gating pulses are generated by Hysteresis controller. The results are verified in Simulink and hardware experimentation