Sensorless Control of Switched Reluctance Motors Based on Typical Positions of Three-Phase Inductances

被引：0
|
作者：
Li M. [1 ]
Chen X. [1 ]
Ren X. [2 ]
Li Y. [1 ]
机构：
[1] College of Electrical and Information Engineering, Hunan University, Changsha, 410082, Hunan Province
[2] Hunan Shaoli Power Electric Co. Ltd, Xiangtan, 411228, Hunan Province
来源：
| 2017年 / Chinese Society for Electrical Engineering卷 / 37期
关键词：
Rotor position; Saturation of magnetic circuit; Sensorless; Switched reluctance motor (SRM); Typical position;
D O I：
10.13334/j.0258-8013.pcsee.161490
中图分类号：
学科分类号：
摘要：
In view of the magnetic circuit of switched reluctance motors is saturated in the practical work and the inductance is a nonlinear function of rotor positions and phase currents, a new control strategy for sensorless based on inductance typical positions when the motor in low speed operation was proposed in this paper. When the motor is operated, the non-conducting phase is injected into high frequency pulse; thereby the whole period inductance information is obtained. The typical position points are obtained by the logical relation of the inductance, and the rotational speed can be calculated by the time interval between two adjacent points, so the rotor position can be estimated. Due to the different load, the motor needs to consider the saturation of the magnetic circuit. However, the selection of location points in this paper is little affected by the saturation factor of the conduction phase when the load is carried, so the method can be operated under different load saturation conditions of the motor. The feasibility and correctness of the method are verified by simulations and experiments. © 2017 Chin. Soc. for Elec. Eng.
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页码：3901 / 3908
页数：7
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