Fault Diagnosis Strategy in Two-Stage Matrix Converter Based on Line Voltage

doi:10.11985/2015.12.003

Abstract

Abstract:

Two-stage matrix converter (TSMC) has characteristics of compact structure, simple modulation strategy,which is easy to convert current. But the problem of switch fault become one of the main factors hindering the research on the TSMC engineering application .Thus TSMC fault diagnosis research are profoundly meaning. This paper presents fault diagnosis strategy of TSMC and analysis switch failure mode through the current circuit, then puts forward the fault diagnosis method based on output line voltage. This method can rapidly and accurately judge the fault switch. Algorithm of the method is simple and easy to implement, etc. The simulation results verify the correctness and feasibility of the fault diagnosis method.

Key words: TSMC, line voltage, fault switch, fault detection

CLC Number:

PM46

Li Deng Zheng, . Fault Diagnosis Strategy in Two-Stage Matrix Converter Based on Line Voltage[J]. Journal of Electrical Engineering, 2015, 10(12): 13-20.

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电流	整流级	逆变级	正常输出线电压（计算电压）			SAp故障输出线电压			线电压误差
电流	整流级	逆变级	uAB	uBC	uCA	uABm	uBCm	uCAm	线电压误差
		100	uab	0	uba	0	0	0	εAB、εCA
iA>0	10X	110	0	uab	uba	uba	uab	0	εAC、εCA
		101	uab	uba	0	0	uba	uab	εAB、εCA
		011	uba	0	uab	uba	0	uab	无
		010	uba	uab	0	uba	uab	0	无
		001	0	uba	uab	0	uba	uab	无
iA<0	10X	100	uab	0	uba	uab	0	uba	无
		110	0	uab	uba	0	uab	uba	无
		101	uab	uba	0	uab	uba	0	无
		011	uba	0	uab	uba	0	uab	无
		010	uba	uab	0	uba	uab	0	无
		001	0	uba	uab	0	uba	uba	无

电流	逆变级	整流级	正常三相线电压（计算电压）			Sap故障三相线电压			误差电压
电流	逆变级	整流级	uAB	uBC	uCA	uABm	uBCm	uCAm	误差电压
		10X	uab	0	uba	0	0	0	εAB、εCA
		1X0	uac	0	uca	0	0	0	εAB、εCA
iA>0	100	X10	ubc	0	ucb	ubc	0	ucb	无
		01X	uba	0	uab	uba	0	uab	无
		X01	ucb	0	ubc	ucb	0	ubc	无
		0X1	uca	0	uac	uca	0	uac	无
iA<0	100	10X	uab	0	uba	vc-ub	0	ub-vc	εAB、εCA
		1X0	uac	0	uca	vc-ub	0	ub-vc	εAB、εCA
		X10	ubc	0	ucb	ubc	0	ucb	无
		01X	uba	0	uab	uba	0	uab	无
		X01	ucb	0	ubc	ucb	0	ubc	无
		0X1	uca	0	uac	uca	0	uac	无