Two-stage Matrix Converter Drive Protection Circuit Design And Research

Two-stage matrix converter (TSMC) is a new topology for direct AC-AC converts.It inherits all the good features of the conventional matrix converter(CMC):Bi-directional power flow, sinusoidal input-output current, controllable input power factor, high power density and no large energy storage capacitor. Compared to the CMC,DBMC have special features such as relative small number of switching devices, simplified clamp circuit, reliable commutation and modulation strategy of less complexity.This paper analyzes the two-stage matrix converter requirements for switch devices and switch devices option.Select the IGBT (insulated gate bipolar transistors)as a two-stage matrix converter switching devices, and the basic properties of the structure and made a detailed introduction,the simulation tools established under Pspice simulation model to understand the process of IGBT devices in the switching current and voltage transformation rules.In the two-stage matrix converter, the switching device IGBT drive circuit control the opening and orderly shutdown,so that two-stage matrix converter can be reliable commutation.IGBT protection circuits ensure that the switching device in the abnormal state can be off in time to protect the security of your device.This paper analyzes two-stage matrix converter drive circuit and protection circuit for the basic requirements, with Mitsubishi M57962L driver IC designed a two-stage matrix converter for driving the protection circuit, the circuit drive capability, features flexible configuration, versatility, low cost, with overload,short circuit, overvoltage protection, the protection of a two-stage matrix converter to run security and stability. Experimental results show that the design of the drive circuit and protection circuits are effective for two-stage matrix converter product of industrialization and laid a foundation.