变频驱动三相感应电机系统稳定性的数学推导与分析

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Abstract The inverter-fed induction motor drive system may become unstable at low frequencies and light load. Taking the inverter-fed three-phase induction motor drive system as an example, the small disturbance mathematic model of whole system is deduced. Based on small disturbance model of induction motor and switching model of inverter system, the three-dimensional unstable region is presented and discussed by Hurwitz stability criterion of modern control theory. The results of mathematic analysis, simulation and experiments are identical. The effect of different motor parameters, filter-inverter parameters, and operation conditions on system stability is studied in details. The analysis method can be applied to inverter-fed multiphase induction motor drive system, and the conclusion obtained in the paper may contribute to the design of parameters and stable operation of the system.

Key words： Inverter-fed induction motor small disturbance model switching function stability

Received: 22 June 2009 Published: 04 March 2014

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TM343

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	Articles by authors
	Guo Yunjun
	Wang Dong
	Liu Dezhi
	Chen Junquan
	Li Fuhua

Cite this article:

Guo Yunjun,Wang Dong,Liu Dezhi等. Mathematical Deduction and Stability Analysis of Inverter-Fed Three-Phase Induction Motor Drive System[J]. Transactions of China Electrotechnical Society, 2010, 25(9): 47-55.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2010/V25/I9/47

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