Electromagnetic Analysis of Can Effect of a Canned SRM

In this chapter, electromagnetic analysis of a canned SRM is studied. Finite element (FE) method is applied, with validation via measurement. Chapter organization is as follows: In Sect. 3.1, canned SRM and operation principle are briefly introduced, with the calculation method described. In Sect. 3.2, eddy current distribution at defined typical rotor positions by a single phase excitation is illustrated, followed by applying all phases. In Sect. 3.3, the can loss analysis is extended to one stroke period and further different control modes. In Sect. 3.4, the airgap flux and eddy current loss features due to the use of cans are shown. In Sect. 3.5, experimental validation is taken.