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| Optimal Design of HTS Linear Induction Motors |
| Zhao Jia, Trillion Q. Zheng, Zhang Wei, Fang Jin, Liu Youmei |
| Beijing Jiaotong University Beijing 100044 China |
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Abstract The structure design and primary winding arrangment of a high temperature superconductor linear induction motor (HTS LIM) are discussed in detail. The relationship curve between the critical current and background field of the HTS tape is given. Using the finite element analysis software Maxwell the electromagnetic properties of the HTS LIM are analyzed. And the key parameters such as the primary coil number, primary slot height and primary slot width are sweeped and optimized. The influence of these key parameters on the thrust force, primary slot leakage flux and critical current of the HTS LIM is also analyzed. Based on the analysis the optimal design method is proposed. According to the structure and the parameters of the HTS LIM a prototype linear induction motor with copper primary windings is manufactured. The thrust force of the prototype motor is tested with different currents and speeds. Comparing the test results with the simulation results a modified coefficient of the thrust is obtained. This coefficient is meaningful for studying the thrust force with different motor parameters.
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Received: 01 November 2010
Published: 07 March 2014
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2011, Vol. 26 
