PWM with Three Intervals and Fuzzy Logic Control Technique for Matrix Converter Fed Induction Motor

Abstract

One of the most interesting members of the power electronic equipment is the matrix converter (MC), This converter is an attractive AC/AC direct power conversion topology. It has main advantages of adjustable speed and power quality compensation compared to AC/DC/AC conventional conversion in following, High quality in input and output current sinusoidal waveforms, zeros consumption of reactive power, and it has a high variable frequency. This paper proposes the application of a matrix converter to an induction motor drive system, where the matrix converter generates three phase pulses width modulation voltage pulses (PWM), to obtain high waveforms sinusoidal input/output current with high performance dynamic of induction motor. The control of the system is insured by a fuzzy logic controller (FLC), which performs closed loop control of the output current waveforms of the matrix converter by regulating the voltage transfer ratio, which is the relationship between the output voltage and the input voltage.. The objective of Venturini algorithms is to control the amplitude of the output voltage; so, by adding the third harmonics to the input and output voltages, the voltage transfer ratio, can be increased up to the desired output voltage amplitude. Simulations results will be presented.