APPLICATION OF MATRIX CONVERTER IN WIND ENERGY CONVERSION SYSTEM USING PMSG

Abstract

The increasing rate of the depletion of conventional energy sources along with ever increasing need of electrical power have given rise to an increased emphasis on renewable energy sources. Amongst the various renewable energy resources such as Wind Energy, Solar Energy, Biornass etc., wind energy is one of the most favoured choice for power capacity addition due to short gestation periods for installing wind turbines, reliability and performance of wind energy machines. Electrical generators are required for converting power of wind into electricity. Traditionally, synchronous generators have been used for power generation, however permanent magnet synchronous Generators (PMSG) are wide used because of the former's inherent ruggedness, lower operating cost, relative ease of operation and maintenance and easier availability in lower ratings even under low speed operation. The power electronic converter is used to interface the wind energy conversion system to the grid. Conventional method of synchronization with the grid is having two or more stages of power conversion. Direct matrix converter is used to reduce the number of stages of power conversion and gives AC-AC power conversion from variable voltage and frequency to the fixed voltage and frequency or vice-versa. It reduce the bulky components which is used in traditional converters. The investigation reported in this Thesis was undertaken with the twin objective of developing a standalone matrix converter employing in wind energy conversion system and feeding the power to the grid which is extracted into the grid. PMSG generate the electrical power with the help of MPPT algorithm. Active and reactive power regulation is done with gain scheduling controller. Voltage oriented control is employed to analyse the active and reactive power.