CARDSM 3 1 CARDSM 1. 1 CARDSM 9 /6 1 CARDSM CARDSM axial coil assisted reluctance doubly salient motor CARDSM CARD

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1 Electri c Machines and Control Vol. 22 No. 11 Nov DOI /j. emc TM 331 A X Control strategy of axial coil assisted reluctance doubly salient motor LIU Ai-minLOU Jia-chuanSUN Peng School of Electrical Engineering Shenyang University of Technology Shenyang China AbstractAn axial coil assisted reluctance doubly salient motor was designed for the problem that the permanent magnet might demagnetize and could not be magnetized under high temperature and high pressure in permanent magnet DC motor. According to the principle of the double salient motor based on the special structure and inductance model of the motor a three phase six-state angle conduction mode was put forward on the basis of the standard angle conduction mode. An excitation current-torque direct control strategy based on the central excitation coil with a two-group power inverter module was proposed. By controlling the excitation current at the commutation moment to realize the adaptive adjustment of the excitation current the torque control was achieved. Ultimately the feasibility and effectiveness of the control method making the motor run more smoothly are verified by the field-circuit coupled analysis and experiments. Keywordscoil assisted reluctancethree phase-six statetorque rippleexcitation coilexcitation current-torque direct control

2 CARDSM 3 1 CARDSM 1. 1 CARDSM 9 /6 1 CARDSM CARDSM axial coil assisted reluctance doubly salient motor CARDSM CARDSM 1 CARDSM Fig. 1 Structure scheme of the CARDSM 1. 2 CARDSM CARDSM u p = R p i p + dψ pr + ψ pe 1 dt u p R p i p ψ pr ψ pe

11 77 i W co θ i= T p = T pr + T pe = 1 2 i2 p ψθ idi θ = const. 2 dl p dθ ± i pi f dl pf dθ 4 100 V 8 A 0 Tθ i= W 3 V7 coθ i 3 V10 V8 V9 θ i = const. CARDSM T p T pr T pe i f L p L pf 14 3 Fig.

3 11 77 i W co θ i= T p = T pr + T pe = 1 2 i2 p ψθ idi θ = const. 2 dl p dθ ± i pi f dl pf dθ V 8 A 0 Tθ i= W 3 V7 coθ i 3 V10 V8 V9 θ i = const. CARDSM T p T pr T pe i f L p L pf 14 3 Fig. 3 Structure of control system CARDSM Table 1 Standard angle conduction law IGBT 2 16 V1 V2 A V3 V4 B V5 V6 C 2 Fig. 2 Curved surface of self-inductance 2 CARDSM 0 θ off = 1 2π - β 2 ( r ) + θ u CARDSM θ on = 2 θ off N r N r β r θ u = 6= 30 θ u = θ on = 0 N r β r θ off = 15 30

4 78 22 Fig. 4 4 Current waveform of winding 2 Table 2 2 Three phase six-state angle conduction law IGBT 2 6 V1 V2 V5 V6 A C 6 14 V1 V2 A V1 V2 V3 V4 A B V3 V4 B 5 Fig. 5 Different angle control mode V3 V4 V5 V6 B C V5 V6 C 2 A 2 C A C C 4 5 CARDSM P A P B P C Fig. 6 Torque comparison of two control methods L a L b L c 2. 2 CARDSM A 2 B A 0A CARDSM 22 A 4 C V A 3 A 5 A

5 N m 0. 3 N m N m 0. 4 N m 1 A 3 A 5 A 9 Fig. 9 Excitation current-torque direct control in standard angle conduction law 7 Fig. 7 Self inductance curve with different currents Fig Fig. 10 Excitation current-torque direct control in three Mutual inductance curve with different currents phase six-state angle conduction law 3 11 TMS320F28335DSP 3 ECAP P A P B P C PWM1 ~ PWM6 A /D 4 EQEP 9 10 IGBT DSP

80 22 11 Fig. 11 Testing platform 14 200 V Fig. 14 Speed adding excitation current at 200 V 100 V 12 15 150 V Fig. 15 Speed of adding excitation current at 150 V Fig.

6 Fig. 11 Testing platform V Fig. 14 Speed adding excitation current at 200 V 100 V V Fig. 15 Speed of adding excitation current at 150 V Fig Voltage and current curve CARDSM 16 CARDSM 16 Fig. 16 Starting speed at different voltages 4 CARDSM V CARDSM Fig. 13 Speed of adding excitation current at 250 V

7 CARDSM J 2 J LIU Yongzhi ZHOU Zheng SHENG Zengjin 100 V 120 V J. Electric Machines and Control J - WANG Xilian CARDSM reluctance motorj LIU Xing CHEN Zhihui ZHU Jie et al. Researches on the threephase six-state control strategy of doubly salient J electro-magnetic ZHANG Le ZHOU Bo FANG Sishen. Research on the double saileint electro-magnetic generator based on there-dimensional nonlinear inductance modelj. Proceedings of the CSEE on nine-states control strategy of doubly salient electro-magnetic 2. motorj. Small & Special Electrical Machines J DAI Weili QIN Haihong GUO Honghao et al. Analysis of commutation in three-phase rectifier of doubly salient electro-magnetic generator J. Proceedings of the CSEE WANG Yin ZHANG Zhuoran YUAN Wanxin et al. Researches J on the three-phase nine-state control strategy of doubly salient WEI Jiadan ZHOU Bo. Flux control for start process of doubly salient electrical motor J. Journal of Nanjing University of Aeronautics & Astronautics J J ZOU Zhirui CHEN Shiyuan. The control strategies of torque ripple suppression about doubly salient electrol-magnetic motor J. Small & Special Electrical Machines J J ZHANG Le ZHOU Bo ZHANG Yongshuai et al. Analysis and suppression of torque ripple for doubly salient electro-magnetic motor J. Proceedings of the CSEE MATLAB /SIMULINK J CHEN DongsuoXIONG Guanghuang. The dynamic model of switched reluctance drive system based on MATLAB / SIMULINK. Journal of Harbin University of Science and Technology / et al. Study of control strategy for status switching of switched reluctance starter / generator WANG Xudong. Angles optimal control of switched. Electric Machines and Control J DAI WeiliWANG HuizhenYAN Yangguang. Advanced angle control mode for electro-magnetic doubly salient machinej. Proceedings of the CSEE J motors J. Proceedings of the CSEE J LIU Weifeng WANG HuizhenWANG Yizhou et al. Researches J brushless DC machinesj. Proceedings of the CSEE ZHAO Xing ZHOU Bo SHI Liwei. A novel electromagnet doubly salient brushless DC motor with minimum torque ripplej. Proceedings of the CSEE GUAN Wenfeng CHEN Zhihui CHEN Ming et al. Starting control of double stator field-winging doubly salient motorj. Proceedings of the CSEE

34 22 f t = f 0 w t + f r t f w θ t = F cos p - ω 0 t - φ 1 2 f r θ t = F cos p - ω 0 t - φ 2 3 p ω 0 F F φ 1 φ 2 t A B s Fig. 1

34 22 f t = f 0 w t + f r t f w θ t = F cos p - ω 0 t - φ 1 2 f r θ t = F cos p - ω 0 t - φ 2 3 p ω 0 F F φ 1 φ 2 t A B s Fig. 1 22 2 2018 2 Electri c Machines and Control Vol. 22 No. 2 Feb. 2018 1 2 3 3 1. 214082 2. 214082 3. 150001 DOI 10. 15938 /j. emc. 2018. 02. 005 TM 301. 4 A 1007-449X 2018 02-0033- 08 Research of permanent