Design and Simulation of Phase-Locked Loop Controller Based Unified Power Quality Conditioner Using Nonlinear Loads

Abstract

Induction heating application uses uniquely high frequency series resonant inverter for achieving high conversion efficiency. The proposed work focus on improving the practical constraints in requiring the cooling arrangements necessary for switching devices used in resonant inverter due to higher switching and conduction losses. By introducing high frequency Multi-MOSFET based series resonant inverter for the application of induction heating with the following merits such as minimum switching and conduction losses using low voltage grade of automotive MOSFET's and higher conversion efficiency with high frequency operation. By adding series combination of low voltage rated Multi MOSFET switches, temperature variation according to the on-state resistance issues can be avoided by sharing the voltage across the switches depends on the number of switches connected in the bridge circuit without comprising existing systems performance parameters such as THD, power factor and output power. Simulation results also presents to verify that the proposed system achieve higher converter efficiency.

Half‐cascaded multilevel inverter coupled to photovoltaic power source for AC‐voltage synthesizer of dynamic voltage restorer to enhance voltage quality

“…So far, various definitions are presented as power quality concept. “Any change in the standard benchmarks of voltage, current, and frequency, which causes the failure or improper performance of the consumer equipment,” is the simple and complete definition for power quality 4‐6 . Many different perturbations can affect the power quality of customers and utility.…”

Controller Design of UPQC for Enhancing Power Quality in Distribution System

“…These loads are the most important cause of serious problems in the power distribution system called power quality (PQ) problems. The PQ problems, known as harmonics, voltage sag/swell, flicker, and imbalance have become serious concerns and the PQ should be improved [1]. Custom power devices (CPDs) have been used increasingly in the distribution system because they can compensate several major PQ problems [2].…”