Dual-Pole LSPM Motor with Dahlander Winding for High Inertia Loads

To improve the starting, the synchronization capability and the steady state performance of dual-pole synchronous motors, conventional stator winding arrangement with two separate sets of windings is being replaced with a single set of Dahlander type winding. This reduces the slot size, which ultimately contributes to a higher power density. Meanwhile, the use of single set of winding could effectively reduce the stator resistance, which limits the braking torque as well as the ohmic loss. For verification purposes, the performance characteristic of the dual-pole motor with these two winding structures are compared in terms of the starting and the synchronization capability. Finite Element (FE) simulation results confirm that the motor with Dahlander type winding exhibits a better synchronization capability, in particular, in case studies with higher load inertia.