Performance Evaluation of Fuzzy One Cycle Control Based Custom Power Device for Harmonic Mitigation

Abstract

Custom power devices (CPDs) provide better harmonic minimization when they are connected in parallel with the distribution network. Power switches have a hard impact on harmonic production in distribution networks, which leads to aging effects. Techniques used to control CPD’s provide full switching in various ways. A pulse width modulation (PWM) scheme requires a reference frame transformation that tracks source and load currents to produce a control signal. The voltage de-coupler is installed in the power device's current controllers to minimize fast current harmonics and remove complexity. One-cycle control (OCC) operates in dual boost converter mode and requires only source currents to produce a control signal. Minimum distortions are obtained by the output voltage feedback compensator. The proposed approach compares the performance of two methodologies based on total harmonic distortion (THD) analysis of the same grid voltage. The performance of the CPD using PI and fuzzy one-cycle control techniques is illustrated by simulation, which gives accurate results.

TLBO trained an ANN-based DG integrated Shunt Active Power Filter to Improve Power Quality

“…Here, the PV-integrated SAPF uses a conventional PI controller to regulate the DC capacitor voltage. Figure 13 demonstrates that the THD on the grid can be reduced from 18.2% [36,37] (without SAPF) to 3.08% when using PV-SAPF with a conventional PI-based controller. However, in this case, the PV-integrated SAPF uses a BBO-trained PI controller to control the voltage of the DC capacitor.…”