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| Indirect Field Orientation Double Close Loop System of Induction Motors |
| Du Yonghong, Li Zhefeng, Liu Zhigang |
| Beijing Jiaotong University Beijing 100044 China |
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Abstract The indirect field orientation control theory is introduced in detail firstly in this paper. The comparison between direct field orientation control and indirect field orientation control is carried. Finally, the indirect vector control system is made as the research target and double close loop control systems which contain synchronous current inside loop and speed outside loop are introduced. The introduction of current feedback loop brings with coupling effect, and the control system uses the difference of the given current and feedback current to decouple the coupling effect. The indirect field orientation control systems based on DSP are established and characteristic experiments are done. The results show that the control systems realize decoupling between magnetic flux and torque, and the dynamic and static performance of the control system is all right.
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Received: 20 October 2008
Published: 14 February 2014
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2009, Vol. 24 
