access icon free Performance prediction of surface-mounted permanent magnet synchronous motor based on ring specimen test result

© The Institution of Engineering and Technology
Received 28/06/2018, Accepted 11/03/2019, Revised 21/12/2018, Published 12/03/2019

The B–H curve and iron loss of electrical steel sheets are essential data for predicting the performance of electric motors. The Epstein frame test is widely adopted to acquire these magnetic properties. However, for rotating electric machines with relatively small geometry, the ring specimen test is preferred because of its simplicity and geometric similarity. This study deals with the experimental verification of the ring specimen test. The B–H curve and iron loss of non-oriented electrical steel sheets are measured via the Epstein frame test and the ring specimen test. Each result is applied in finite element analysis (FEA) of the fabricated electric motor. Furthermore, using these FEA results and the d-q-axis equivalent circuit, the performance of the electric motor is predicted. For experimental verification, electric motor tests are performed under no-load and load conditions.

Inspec keywords: equivalent circuits; synchronous motors; permanent magnet motors; electric machines; finite element analysis

Other keywords: fabricated electric motor; ring specimen test result; iron loss; electric motor tests; surface-mounted permanent magnet synchronous motor; nonoriented electrical steel sheets; electric machines; performance prediction; Epstein frame test

Subjects: Synchronous machines; a.c. machines; d.c. machines; Control of electric power systems; Numerical analysis; Finite element analysis

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