Design of DC-Excited Linear Synchronous Motors for High-Speed Maglev Transport

The high-speed maglev train driven by the DC-excited linear synchronous motor (DCELSM) has been a promising type of transport due to its advantages such as no limitation on wheel-rail interaction, high-speed large-thrust target, and relatively lower cost compared to superconductive linear machines. This paper proposes a design strategy of the DCELSM for high-speed maglev applications. The target speed aims at 600 km/h and the design strategy takes fully consideration on the large-scale linear machines. With the proposed design method, a feasible solution of the DCELSM is revealed, including its main geometry dimensions, circuit parameters, and steady-state characteristics. Besides, the decoupling analysis is carried out based on steady-state power-angle characteristics of thrust and levitation force. The design and analysis in this paper provide a general method for the DCELSMs in large-scale applications and two practical guidelines for the high-speed maglev transport.