Research On Application Of Matrix Converter In Variable Frequency Air Conditioner Compressor

Due to continuous improvement in technology and the continuous improvementof people’s lives, air conditioning and refrigeration industry has made tremendousdevelopment. There is a growing emphasis on barriers to energy crisis and climatewarming on the formation of human development simultaneously. People most urgentrequirement is air-conditioned has a good comfort with significant energy savings.Because of the advantages of energy-saving and low noise, inverter air conditionerhas gained increasingly attention.Matrix converter (MC) AC-AC conversion directly, with good input and outputcharacteristic, the power factor is adjustable and advantages of small size so get wideattention. Permanent magnet synchronous motor (PMSM) for its significant energysaving, small size and other advantages, get a lot of attention and was widely used inthe industrial production process. Both of the above advantages and performancecharacteristics required of an air conditioner with a high degree of similarity.Based on research on the mathematical model of permanent magnet synchronousmotor, a simulation model of vector control was established, Studied the motor speedand torque characteristics. Then combined with matrix converter on MC-PMSMcontrol system based on dual space vector modulation strategy a lot theoreticalresearch, and build a simulation model of the system. The simulation study theperformance characteristics under full load and no-load system. Finally, a detailedanalysis of the dual space vector modulation strategy motor common mode voltagesuppression, raised MC bidirectional switches in different states to reducecommon-mode voltage amplitude method.