Optimization of an HTS Induction/Synchronous Motor According to Changing of HTS Tapes Critical Current by Analytical Hierarchy Process

Document Type : Research Article

Authors

1 Corresponding Author, F. Kazemzadeh is with the High Voltage and Magnetic Material Research Center, Electrical Engineering Department, Iran University of Science and Technology (IUST), Tehran 1684613114, Iran (e-mail: fkazemzadeh@elec.iust.ac.ir).

2 H. Heydari is with the Center of Excellence for Power System Automation and Operation, Iran University of Science and Technology (IUST), Tehran 1684613114, Iran (e-mail: heydari@iust.ac.ir).

Abstract

This paper represents the performance of a squirrel-cage High Temperature Superconducting Induction/ Synchronous Motor (HTS-ISM) based on nonlinear electrical equivalent circuit. The structure of the HTS-ISM is the same as that of the squirrel-cage type induction machine, and the secondary windings are fabricated by the use of the HTS wires. It has already been shown that based on the experiments that even this simple replacement realizes the excellent improvement of the performances such as coexistence of slip and synchronous rotations, higher efficiency (due to the synchronous operation), and robustness against the overload. In this paper, the transient modeling of this motor is performed by Matlab Simulink. Also, it is shown by FEM that starting and synchronous torque is extremely dependent on input voltage and critical current of superconducting tapes of the rotor. So, the starting and synchronous torque of the HTS induction motor can be improved with adjustment of the input voltage and critical current of the rotor HTS tapes. Also, in order to optimize both the starting and synchronous torques simultaneously, the relationship between these torques and the critical current of the HTS tapes have been investigated. Finally, according to the variation of the critical current, we optimized the design of the motor by analytical hierarchy process with finding the appropriate critical current for HTS tapes of rotor. The equations obtained are nonlinear, and then the typical Newton–Raphson method is used for the calculation.

Keywords

References

[1]      J. Sim, M. Park, H. Lim, G. Cha, J. Ji, and J. Lee, “Test of an induction motor with HTS wire at end ring and bars,” IEEE Trans. Applied Superconductivity, vol. 13, no. 2, pp. 2231–2234, 2003.
[2]      J. Sim, K. Lee, G. Cha, and J. Lee, “Development of a HTS squirrel cage induction motor with HTS rotor bars,” IEEE Trans. Applied Superconductivity, vol. 14, no. 2, pp. 916–919, 2004.
[3]      T. Song, and T. Ishigohka, “Experimental study on induction motor with superconducting secondary conductors”, IEEE Trans. Applied Superconductivity, vol. 17, no. 2, June 2007
[4]      T Nakamura, K Nagao, T Nishimura, Y Ogama, M Kawamoto, T Okazaki, N Ayai and H Oyama, “ The direct relationship between output power and current carrying capability of rotor bars in HTS  nduction/synchronous motor with the use of DI-BSCCO tapes” , Superconductor Science and Technology, vol. 21, 2008.
[5]      T. Nakamura, H. Miyake, Y. Ogama, G. Morita, I. Muta, and T. Hoshino, “Fabrication and characteristics of HTS induction motor by the use of Bi-2223/Ag squirrel cage rotor,” IEEE Trans. Applied Superconductivity, vol. 16, no. 2, June 2006
[6]      T. Nakamura, Y. Ogama, and H. Miyake, “Performance of inverter fed HTS induction-synchronous motor operated in liquid nitrogen,” IEEE Trans. Applied Superconductivity, vol. 17, no. 2, June 2007.
[7]     T. Nakamura, Y. Ogama, H. Miyake, K.. Nagao and T. Nishimura, “Novel rotating characteristics of a squirrel-cage-type HTS induction /synchronous motor,” Superconductor Science and Technology., vol. 20, pp. 911-918, June 2007. 
[8]     K. Nagao, T. Nakamura, T. Nishimura, Y. Ogama, N. Kashima, S. Nagaya, K. Suzuki, T. Izumi and Y. Shiohara, “Development and fundamental characteristics of a YBCO superconducting induction/synchronous motor operated in liquid nitrogen” , Superconductor Science and Technology, vol. 21, pp.015022-015026, 2008
[9]      G. Morita, T. Nakamura, and I. Muta, “Theoretical analysis of a YBCO squirrel-cage type induction motor based on an equivalent circuit,” Superconductor Science and Technology, vol. 19, pp. 473–478, 2006.
[10]   T. Nakamura, T. Nishimura, K. Nagao, K. Matsumura and Y. Ogama, “Theoretical analysis of high temperature superconducting induction/synchronous machine based on he nonlinear electrical equivalent circuit”, International Conference on Electrical Machines.2008
[11]   K. Berger, J. Lévêque, D. Netter, B. Douine, and A. Rezzoug, “Influence of temperature and/or field dependences of the E J power law on trapped magnetic field in bulk YBaCuO,” IEEE Trans Applied Superconductivity, vol. 17, no. 2, pp. 3028–3031, june 2007.
[12]   N. Schonborg, S. Schonborg and S. Homfelt, “Model of the temperature dependence of the hysteresis losses in a high-temperature superconductor,” Physica C, vol. 372-376, pp. 1734-1738, 2002.
 Farhad Kazemzadeh and Hossein Heydari “Selecting a best point of Critical Current for the HTS Tapes of an HTS Induction/Synchronous Motor by Analytical Hierarchy Process” 26th international power systam conference, PSC 20

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