Fig. 1. Equivalent circuit with single-phase full bridge inverter and SP-PMSM. 그림 1. SP-PMSM과 단상 풀 브리지 인버터의 등가 회로
Fig. 2. Linear and saturation regions of λ – i characteristics in air gap, (a) Before offset voltage, (b) After offset voltage. 그림 2. 공극 내 λ – i 특성의 선형 및 포화영역, (a) 옵셋 전압 인가 전, (b) 옵셋 전압 인가 후
Fig. 3. Detection of a rotor pole in a SP-PMSM when injecting high frequency voltage, (a) Phase current at north pole, (b) Phase current at south pole. 그림 3. 고주파 전압 주입 시 SP-PMSM에서의 회전자 자극 검출, (a) N극에서의 상전류, (b) S극에서의 상전류
Fig. 4. Detection of a rotor pole in a SP-PMSM when injecting high frequency voltage and offset voltage, (a) Phase current at north pole, (b) Phase current at south pole. 그림 4. 고주파 전압 및 옵셋 전압 주입 시 SP-PMSM에서 의 회전자 자극 검출, (a) N극에서의 상전류, (b) S 극에서의 상전류
Fig. 5. A block diagram of the initial rotor pole detection algorithm. 그림 5. 초기 회전자 자극 검출 알고리즘 블록도
Fig. 6. Experimental set-up. 그림 6. 실험장치
Fig. 7. Experimental waveforms of north and south pole detection, (a) North pole detection and corresponding signal, (b) South pole detection and corresponding signal. 그림 7. N극 및 S극 자극 검출 실험파형, (a) N극 검출 및 관련 신호l, (b) S극 검출 및 관련 신호
Table 1. Parameters of a single-phase PMSM. and driving system. 표 1. SP-PMSM 및 구동 시스템의 파라미터
References
- C. Chiu, Y. Chen, Y. Liang and R. Liang, "Optimal driving efficiency design for the single phase brushless DC fan motor," IEEE Trans. on Magnetics, vol.46, no.4, pp.1123-1130, 2010. DOI: 10.1109/TMAG.2009.2035051
- C. Chiu, Y. Chen, and W. Jhang, "Properties of cogging torque, starting torque, and electrical circuits for the single-phase brushless DC motor," IEEE Trans. on Magnetics, vol 44, no.10, pp.2317-2323, 2008. DOI: 10.1109/TMAG.2008.2000761
- J. Seo, J. Yoo and T. Jung, "Design on notch structure of stator tooth to reduce of cogging torque of single-phase BLDC motor," 2015 18th International Conf. on Electrical Machine and Systems (ICEMS), 2015. DOI: 10.1109/ICEMS.2015.7385273
- L. Iepure, I. Boldea and F. Blaabjerg, "Hybrid I-f starting and observer-based sensorless control of single-phase BLDC -PM motor drives," IEEE Trans. on Ind. Electr., vol.59, no.9, pp.3436-3444, 2012. DOI: 10.1109/TIE.2011.2172176
- J. Shao, D. Nolan and T. Hopkins, "A novel direct back EMF detection for sensorless brushless DC (BLDC) motor drives," IEEE Applied Power Electronics Conference and Exposition (APEC), vol.1, pp.300-305, 2002. DOI: 10.1109/APEC.2002.989224
- J. Shao, D. Nolan and M. Teissier, and D. Swanson, "A novel microcontroller-based sensorless brushless DC (BLDC) motor drive for automotive fuel pumps," IEEE Trans. on Ind. Electr., vol.39, pp.1734-1740, 2003. DOI: 10.1109/TIA.2003.818973
- D. Kim, K. Lee, B. Kim and B. Kwon, "A novel starting methods of the SPM-type BLDC motors without position sensor for reciprocating compressor," IEEE Industry Application Conf. (IAS), vol.2, pp.861-865, 2006. DOI: 10.1109/IAS.2006.256626
- L. Ying and N. Ertugrul, "A starting strategy for a robust position sensorless technique in non-salient PM AC motor drives," IEEE Power Electronics and Motion Control Conf.(IPEMC), vol.2, pp.1028-1032, 2004.
- Y. Lai, F. Shyu and S. Tseng, "New initial position detection technique for three-phase brushless DC motor without position and current sensors," IEEE Trans. on Ind. Appl., vol.39, pp. 485-491, 2003. DOI: 10.1109/TIA.2003.809450