Analysis of different winding topologies for canned switched reluctance machines

Due to the fact of a simple and robust cross-section design switched reluctance machines are perfectly suited to drive hydraulic pumps; either as dry-running version or as canned version for seal-less applications. Besides copper and iron losses, very high losses are produced additionally in the stator and rotor can shields of the seal-less version. These can losses usually count more than 60% of the total losses and have a big impact on the thermal behavior and stability of the switched reluctance drive. Different winding topologies for switched reluctance machines are analyzed for both pump versions with the main focus on the can losses.