MC-UPQC – A Novel Approach in Multifeeder Distribution System for Improvement of Power Quality Issues

Electrical Engineering

This paper presents a Multiconverter unified power-quality conditioning system (MC-UPQC), capable of simultaneous compensation for voltage and current in multibus/MultiFeeder systems. In this configuration, one shunt voltage-source converter (shunt VSC) and two or more series VSCs exist. The system can be applied to adjacent feeders to compensate for supply-voltage and load current imperfections on the main feeder and full compensation of supply voltage imperfections on the other feeders. In this setup configuration, all converters are connected back to back on the dc side and share a common dc-link capacitor. Therefore, power can be transferred from one feeder to adjacent feeders to compensate for sag/swell and interruption. A power system consist of two three phase three wire 380V (rms, L-L), is designed and simulated in MATLAB Simulink and compared Power transfer between two adjacent feeders and Compensation for interruptions. The performance of the MC-UPQC is evaluated under various disturbance conditions and it is shown that its best performance and less THD characteristic. A single phase prototype model of a 3 phase MC-UPQC selected and designed for hardware setup, main problem which we are going to solve using this prototype model is voltage dip.

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