Abstract

Rapid development of high power semiconductor devices with fast control features have given birth to several Flexible AC Transmission Systems (FACTS) controllers for improving power system performances. One of the advanced FACTS Controllers is Unified Power Flow Controller (UPFC), which can control power flows, both real and reactive in Transmission line. This paper presents performance analysis of UPFC based on d-q axis theory. So far the standard practise of realizing the UPFC has been confined to connecting two inverters back to back with a DC link capacitor in between. This capacitor brings with it several disadvantages which affects the overall reliability of the UPFC. The Matrix Converter (MC) topology comes without any such bulky reactive element except for lighter components as filters. This paper examines the effectiveness of MC as UPFC and simulation results shows a comparable performance with the traditional back to back constructs.

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