Abstrait

Performance Analysis of Three Phase Matrix Converter for Induction Motor

R. Priyadharshini, K.V.Kandasamy

The motivation of this project is to produce three phase voltage with variable frequency and amplitude. This is achieved with the help of matrix converter, which is single stage AC/AC converter. It has more characteristics like sinusoidal input and output currents, voltage, unity displacement factor and limited frequency changer. The various modulation algorithms are used to control matrix converter. Most ideology behind the modulation algorithm is to get output voltages from input desired frequency and amplitude. The modulation algorithm can be applied to both direct and indirect matrix converter. The induction motor fed by three phase direct matrix converter which makes directly AC-AC power conversion is modelled using Space Vector Modulation technique for direct matrix converter in Matlab& Simulink. In this method, gate drive signals for the nine bidirectional switches are calculated to generate variable frequency and amplitude of sinusoidal output voltage from fixed frequency and amplitude of input voltage. This model provides the output upto 86.6% of input voltage and unity power factor. And also it reduces the effective switching frequency in each cycle and reducing the switching loses.