Linear Synchronous Motors, 2nd Edition

Appendix C

Appendix C Performance Calculations for PM LSMs

The Case Study 3.1 in Chapter 3 deals with the performance calculations for a single-sided LSM with surface PMs. Let us make similar calculation for the same armature system and equivalent reaction rail with buried (embedded) configuration of PMs. The line voltage-to-frequency ratio should be V_1L−L/f = 10 (V_1L−L = 200 V at 20 Hz) and calculations should be done for f = 20 Hz and f = 5 Hz.

All specifications are the same as for PM surface configuration except the air gap, which in the d-axis, is equal to that in the q-axis, i.e., g = g_q = 2.5 mm, the depth of the reaction rail slot for the PM h₂ = 21 mm, and the width of the reaction rail slot for the PM b₂ = 8 mm. The axial length of ...