Journal of Electrical Engineering and Technology

  • 제13권1호
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  • Pages.160-167
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  • 2018
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  • 1975-0102(pISSN)
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  • 2093-7423(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
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A Torque Compensation Method Considering Temperature Variation of SPMSM

  • Jung, Tae-Uk (Department of Electrical Engineering, Kyungnam University) ;
  • Park, Chang-Seok (Department of Electrical Engineering, Kyungnam University)
  • 투고 : 2017.05.02
  • 심사 : 2017.08.14
  • 발행 : 2018.01.01
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초록

This paper analyzed the effect of temperature on the permanent magnet flux and output torque. The major parameter which will impact the torque control accuracy of a surface mounted permanent magnet motor is the variation of the permanent magnet temperature. In addition, the temperature variation of the permanent magnet will also influence the maximum torque per ampere of the motor. To analyze the effect of temperature on the permanent magnet, the rotor of the motor was directly heated to measure the temperature and the permanent magnet flux was measured. As a result, the output torque of the motor decreases as the temperature of the rotor permanent magnet increases. Therefore, this paper proposes a technique to compensate the phase current of the motor by estimating permanent magnet flux, and it is proved through theoretical basis and several experiments.

키워드

E1EEFQ_2018_v13n1_160_f0001.png 이미지

Fig. 1. B-H curves of the NP-8R 6kOe bonded NdFebmagnet

E1EEFQ_2018_v13n1_160_f0002.png 이미지

Fig. 2. Demagnetization ratio curves of the NP-8R 6kOebonded NdFeb magnet according to temperature

E1EEFQ_2018_v13n1_160_f0003.png 이미지

Fig. 3. MTPA curve of SPMSM

E1EEFQ_2018_v13n1_160_f0004.png 이미지

Fig. 4. Magnetic flux linkage observer

E1EEFQ_2018_v13n1_160_f0005.png 이미지

Fig. 5. Block diagram of the proposed torque compensation algorithm

E1EEFQ_2018_v13n1_160_f0006.png 이미지

Fig. 6. Frequency response characteristics of flux observer

E1EEFQ_2018_v13n1_160_f0007.png 이미지

Fig. 7. Experimental Measurement of the Permanent-Magnet (PM) Temperature of the Test SPMSM

E1EEFQ_2018_v13n1_160_f0008.png 이미지

Fig. 8. Variation of BEMF by temperature

E1EEFQ_2018_v13n1_160_f0009.png 이미지

Fig. 9. Experimental test setup

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Fig. 10. Output waveform with variable torque load atroom temperature. (A) load torque : 10[mNm], (B)load torque : 127[mNm]

E1EEFQ_2018_v13n1_160_f0011.png 이미지

Fig. 11. Output waveform with variable torque load at100[¡ÆC]. (A) load torque : 10[mNm], (B) loadtorque : 127[mNm]

E1EEFQ_2018_v13n1_160_f0012.png 이미지

Fig. 12. Output waveform with variable torque load at100[¡ÆC]. (A) load torque : 10[mNm], (B) loadtorque : 127[mNm]

E1EEFQ_2018_v13n1_160_f0013.png 이미지

Fig. 13. Output waveform of motor performance tester. (A)22 [¡ÆC], (B) 100 [¡ÆC], and (C) (A) vs. (B)

E1EEFQ_2018_v13n1_160_f0014.png 이미지

Fig. 14. Output waveform of motor performance tester at100[¡ÆC]

Table 1. The properties of a SPMSM drive parameter

E1EEFQ_2018_v13n1_160_t0001.png 이미지

참고문헌

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