Performance Evaluation of SAPFs Using Space Vector-Based HCC Under Various Loading Conditions

In this research paper, we present a novel space vector-based hysteresis current control (HCC) scheme for standard two-level voltage source inverter (VSI) shunt active power filters (SAPFs). The performance of the SAPF is evaluated under three loading scenarios: steady-state, transient, and unbalanced conditions. These evaluations focus on the SAPF's effectiveness in reducing the total harmonic distortion (THD) in the source current. The simulations are conducted using PSIM software, which includes a special dynamic link library (DLL) block. A fast Fourier transform (FFT) algorithm is utilized to generate the harmonic current components as a reference signal. The compensating current injected by the SAPF is controlled by gate pulses applied to the switching devices of each leg, determined by the logic behind the novel space vector-based HCC scheme.