Journal of Shandong University(Engineering Science) ›› 2019, Vol. 49 ›› Issue (6): 81-85.doi: 10.6040/j.issn.1672-3961.0.2019.339

• Electrical Engineering • Previous Articles     Next Articles

Study on a low-speed direct drive transverse-flux switched reluctance motor

Zhenwei ZHAO1(),Zhigang DONG2,Yongbin LI3   

  1. 1. School of Electrical Engineering, Shandong University, Jinan 250061, Shandong, China
    2. Scientific Research and Social Service Center, Shandong College of Electronic Technology, Jinan 250000, Shandong, China
    3. Tuopu Group Co., Ltd., Ningbo 315800, Zhejiang, China
  • Received:2019-07-02 Online:2019-12-20 Published:2019-12-17

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Abstract:

In order to improve the torque density of switched reluctance motor (SRM), achieve low speed and large torque output, and meet the requirements of direct electrical drive systems such as servo and electric vehicle, a new type of transverse magnetic flux switch reluctance motor (TFSRM) was proposed. The principle of transverse flux motor was applied to switch reluctance motor, which simplified the complexity of the motor structure and improved the torque density of the motor. The working principle and structural characteristics were introduced in detail. The magnetic field distribution of the stator and rotor in different relative positions were analyzed by the three-dimensional equivalent magnetic network method, and the torque angle characteristics of the motor were calculated under constant current control. A closed-loop current control system based on digital signal processor was designed, and the prototype was tested. The experimental results were consistent with the theoretical analysis, which verified the feasibility and validity of the theoretical analysis and design method.

Key words: transverse-flux, switched reluctance drive, torque magnification, Three-dimensional equivalent magnetic network, DSP

CLC Number: 

  • TM352

Fig.1

Traditional SRM structure"

Fig.2

Schematic diagram of external rotor TFPM"

Fig.3

Air gap magnetic density distribution at different rotor positions"

Fig.4

Angle characteristic curves of prototype moment"

Fig.5

Block diagram of DSP-based current closed-loop control system"

Fig.6

Comparison of single-phase static moment angle characteristics of prototype and the calculation results"

Fig.7

Mechanical characteristic curve of the prototype under constant current control"

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