Implementation of space vector modulated 3Φ to 3 Φ matrix converter fed induction motor

Matrix converters (MC) are compact voltage source converters capable of providing variable voltage and variable frequency at the output. Compared with traditional topologies the MC does not require an intermediate DC link and provides sinusoidal output waveform with minimum higher order harmonics. To yield higher rms O/P voltage, it is proposed to use space vector modulation (SVM) algorithm for the voltage control of converter. The proposed modulation technique is derived from indirect transfer approach (ITF).The time arc information of the supply voltages and the desired output frequency are used to identify the sectors of the SVM technique, to generate the pulses of desired duration. The digital implementation of space vector modulated (SVM) switching scheme for a three phase to three phase MC is done through digital signal processor (DSP) TMS 320C 2407A. To verify the validity of the algorithm a 15 KVA MC is built. SVM pulses are generated and given to the appropriate MC switches through a decoder circuit and the experimental results are presented. The proposed modulation algorithm can be used for v/f control of induction motor.