System design of the slotless iron-cored PMLSM for dynamic parameters variation and DC link voltage decision

This paper presents the system design of permanent magnet linear synchronous machine with double-side PM mover and slotless iron-cored stator in the required speed and thrust. In our analysis for the motor design, we adopt the generalized magnetic vector potential with space harmonics calculated from the transfer relations and boundary conditions. This analysis gives analytical formulae for estimation of dynamic motor parameters such as flux linkage, inductance, and back electromotive force, etc. Also, to satisfy the required thrust and speed in various applications, the design must be considered by the useable limits of the DC link voltage and dynamic operating rage as well as the characteristics of design parameters in a point of system. Therefore, in this paper, the design of manufacturing motor is optimized by characteristics of motor parameters with the variation of PM size and coil turns. And, the permissible operating range of manufactured motor by determination of base speed and base thrust according to switching scheme of DC link voltage are offered. Finally, the results of analytical solutions are verified by finite element analysis and experiment.