Direct Power Control By Using Matrix Converter Based UPFC
Journal Title: International Journal of Science Engineering and Advance Technology - Year 2013, Vol 1, Issue 6
Abstract
This paper describes direct power control (DPC) by using Matrix converter based Unified power flow controller (UPFC). The basic problems of UPFC’s are discussed, however this paper proposes an alternative solution for direct power control using a direct ac-ac converter called a matrix converter. The pulse width modulation control technique developed and presented in this paper is based on space vector approach. This paper presents the complete space vector model of a three phase to three phase matrix converter topology. Theoretical principles of direct power control (DPC) based on sliding mode control techniques are established for a matrix converter based UPFC dynamic model including the input filter. Matrix converters (MCs) allow the direct acac power conversion without dc energy storage links, matrix converter is a bidirectional power flow converter that uses semi converter switches arranged in the form of matrix array. Therefore, the matrix converter based unified power flow controller (MCUPFC) has reduced cost, capacitor power losses and volume with higher reliability By selecting an appropriate matrix converter switching state, line active and reactive power, together with ac supply reactive power, can be directly controlled, and guaranteeing good steady-state and dynamic responses. The line active and reactive power linear controllers based on a modified Venturini highfrequency PWM modulator compared with direct power controller (DPC) by using MC-UPFC; guarantee faster responses without overshoot , presenting no cross-coupling in dynamic and steadystate responses and no steady state error. Experimental results of direct power controllers for MC based UPFC shows decoupled active and reactive power control and fast response times.
Authors and Affiliations
Ravikumar Reddy P| PursuingM.Tech in the field of POWER INDUSTRIAL DRIVES, Firoz Ali Mohammed| Assoc.prof &, head of the EEE Deportment
Keywords
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