The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
권호 표지
DOI QR코드

DOI QR Code

Input Power Estimation Method of a Three-phase Inverter for High Efficiency Operation of an AC Motor

교류 전동기의 고효율 운전을 위한 3상 인버터의 입력전력 추정 기법

  • Kim, Do-Hyun (Dept. of Electrical and Medical Convergent Engineering, Kangwon Nat'l University) ;
  • Kim, Sang-Hoon (Dept. of Electrical and Electronic Engineering, Kangwon Nat'l University)
  • Received : 2019.07.09
  • Accepted : 2019.09.11
  • Published : 2019.12.20
Download PDF
⟨ Previous Next ⟩

Abstract

An input power estimation method of a three-phase inverter for the high-efficiency operation of AC motors is proposed. Measuring devices, such as DC link voltage and input current sensors, are required to obtain the input power of the inverter. In the proposed method, the input power of the inverter can be estimated without the input current sensor by using the phase current information of the AC motor and the switching pattern of the inverter. The proposed method is more robust to parameter error than conventional method. The validity of the input power estimation method is verified through experiments conducted on a 1 kW permanent-magnet synchronous motor drive system.

Keywords

References

  1. S. H. Kim, Electric motor control, DC AC and BLDC motors, Elsevier Inc., Ch. 5, 2017.
  2. N. Urasaki, T. Senjyu, and K. Uezato, "A novel calculation method for iron loss resistance suitable in modeling permanent-magnet synchronous motors," IEEE Trans. Energy Conversion, Vol. 18, No. 1, pp. 41-47, Mar. 2003. https://doi.org/10.1109/TEC.2002.808329
  3. S. Morimoto, Y. Tong, Y. Takeda, and T. Hirasa, "Loss minimization control of permanent magnet synchronous motor drives," IEEE Trans. Ind. Appl., Vol. 41, No. 5, pp. 511-517, Oct. 1994.
  4. F. F. Bernal, A. G. Cerrada, and R. Faure, "Modelbased loss minimization for DC and AC vectorcontrolled motors including core saturation," IEEE Trans. Ind. Appl., Vol. 36, No. 3, pp. 755-763, May/Jun. 2000. https://doi.org/10.1109/28.845050
  5. J. Lee, K. Nam, S. Choi, and S. Kwon, "Loss-minimizing control of PMSM with the use of polynomial approximations," IEEE Trans. Power Electron., Vol. 24, No. 4, pp. 1071-1081, Apr. 2009. https://doi.org/10.1109/TPEL.2008.2010518
  6. E. Chung, Y. Lee, and J. I. Ha, "Loss minimizing vector control of interior permanent magnet synchronous motor," Transactions of Korean Institute of Power Electronics, Vol. 20, No. 4, pp. 330-336, Aug. 2015. https://doi.org/10.6113/TKPE.2015.20.4.330
  7. A. Balamurali, G. Feng, C. Lai, J. Tjong, and N. C. Kar, "Maximum efficiency control of PMSM drives considering system losses using gradient descent algorithm based on DC power measurement," IEEE Trans. Energy Conversion, Vol. 33, No. 4, pp. 2240-2249, Dec. 2018. https://doi.org/10.1109/TEC.2018.2852219
  8. A. Ahmed, Y. Sozer, and M. Hamdan, "Maximum torque per ampere control for buried magnet PMSM based on DC-link power measurement," IEEE Trans. Power Electron., Vol. 32, No. 2, pp. 1299-1311, Feb. 2017. https://doi.org/10.1109/TPEL.2016.2543663
  9. Y. Dote and S. Kinoshita, Brushless servomotors fundamentals and applications, Clarendon Press, Ch. 6, 1990.