Commutation Strategy Of Matrix Converter Based On Single-chip Dual-gate IGBT

This paper meticulously analyzes the theory of matrix converter, proposing particular conception in both semiconductor switch and matrix converter system. It is the first time that a single-chip dual-gate IGBT is used as the switch cell in matrix converter. The theoretical analysis, cell design and mix-mode simulation of BD-IGBT is finished in the paper. The applicability and advantage of BD-IGBT in matrix converter is discussed and experimental calibration, providing the theoretical foundation for using BD-IGBT in matrix converter.This paper take the power loss as the judgment criteria of matrix converter’ performance. Research done in the paper is concerned on reducing the power losses and improve the efficiency of the system. Modulation method and commutation strategy is first discussed in this paper. A three-phase to three-phase matrix converter with four-step/one-step commutation strategies is developed in MATLAB/SimPowerSystems. To calculate the power loss of the matrix converter, we develop the mathematical model for the conduction loss and switching loss of matrix converter. By comparing the power loss of different switching cell, we confirm the advantage of BD-IGBT.This paper propose a new two-level gate control approach for BD-IGBT. The analysis reflects that the power loss of BD-IGBT is further reduced by using this new control approach. It means that the energy density and efficiency of the system can be developed. A two-phase to one-phase circuit is also developed in this paper. And the analysis is partly experimental calibration.