Open AccessLow‐torque ripple control of SRM based on current vector
Author(s) -
Kuai Songyan,
Xia Xinxiang,
Zhang He,
Hu Kun
Publication year - 2020
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
ISSN - 1751-8679
DOI - 10.1049/iet-epa.2019.0548
Subject(s) - control theory (sociology) , torque ripple , ripple , torque , switched reluctance motor , excitation , direct torque control , vector control , fourier series , computer science , engineering , mathematics , physics , control (management) , induction motor , mathematical analysis , voltage , artificial intelligence , electrical engineering , thermodynamics
To reduce torque ripple of switched reluctance motor (SRM), a low‐torque ripple control method based on current vector is proposed in this study. In which, i d = 0 control strategy is adopted. Then, i q is decomposed into the vector sum of two‐phase currents in different positions. A Fourier series model about T e and i q is established and this model satisfies the magnetic saturation condition. According to the established Fourier series model, the change rule of i q based on constant reference torque is obtained. In this study, torque models of SRM under traditional unipolar sinusoidal excitation control method, constant i q unipolar excitation control method and variable i q unipolar excitation control method are analysed. Finally, experimental platform of SRM control system based on TMS320F2812 is built. Experimental results show that the variable i q unipolar excitation method based on current vector decomposition can effectively reduce the torque ripple of SRM.