MC-UPQC for Power Quality Control

Abstract

The MC-UPQC is very important while compensating voltage sag, swell, interruption & also injecting currents into line to reduce the non-linear load currents and to compensate the reactive power which is generated by the loads. It also helps in supplying the pure sinusoidal wave to sensitive/critical loads. It also improves the power factor in the line. So this MC-UPQC is the good device for supplying the continuous power supply to consumers. In this we are using DVRs & DSTATCOMs. These consist of VSCs and are commonly shared by a DC link capacitor. Conventionally a PI controller is used to maintain the dc-link voltage at the reference value but the transient response of the conventional PI controller is very slow. So to improve the transient response of the DSTATCOM an energy based dc-link voltage controller is proposed. PWM techniques are used for generating the gate pulses which are given to IGBTS. Finally the main objective of the work is to improve the Power quality of the system and continuous power supply to consumers