A New Active Power Injection Scheme Using CHB-MLI DSTATCOM for PQ Improvement

Abstract

Power quality is the term that which appears often in electrical terminology. With good quality in power, power system performance increases. Maintaining the power system parameters close to ideal values is power quality. FACTS devices, using power electronic technology, are extremely fine devices to keep the power system well composed. A FACTS device without active energy source is confined in its operation and the addition of energy storage device can make FACTS device to exchange real and reactive power to PCC and can significantly improve the grid performance. The paper illustrates to improve quality in power system with a battery unified DSTATCOM and active power injection to PCC. DSTATCOM is a multi-level device giving out five-level output reducing the stress across the power switches of DSTATCOM. A multi-carrier level shifted carrier PWM technique is used to trigger five-level DSTATCOM. The model is designed as well as simulation results are evaluated by using Computer Simulation platform.