基于电感辨识的电流解耦算法在内置式永磁同步电机弱磁控制中的应用

doi:10.19595/j.cnki.1000-6753.tces.151748

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Abstract Current coupling effect is obvious when interior permanent magnet synchronous motor (IPMSM) runs at high speed in the flux-weakening area, which leads to big current tracking error and poor performance of torque output. A current decoupling algorithm based on inductance identification was proposed. The algorithm adopted recursive least square method with forgetting factor to identify the inductance parameters. Then the identified parameters were applied to the current decoupling algorithm based on voltage feed-forward compensation. It not only realized the current decoupling control, but also improved system robustness to inductance parameter perturbation. Simulation and experimental results demonstrate that the algorithm proposed can achieve better current control effect in flux-weakening area. It means the actual current can rapidly and accurately track the given current. As a result, the torque output is increased, and the system dynamic performance is improved.

Key words： Interior permanent magnet synchronous motor (IPMSM) flux-weakening current tracking error inductance identification current decoupling

Received: 23 October 2015 Published: 30 August 2017

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TM351

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	Liu Dongliang
	Ren Jinsong
	Lin Weijie
	Xu Zhenghua

Cite this article:

Liu Dongliang,Ren Jinsong,Lin Weijie等. Current Decoupling Algorithm Based on Inductance Identification in the Application of Interior Permanent Magnet Synchronous Motor Flux-Weakening Control[J]. Transactions of China Electrotechnical Society, 2017, 32(16): 98-105.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.151748 OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I16/98

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