期刊
IEEE TRANSACTIONS ON ENERGY CONVERSION
卷 32, 期 4, 页码 1468-1478出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TEC.2017.2710159
关键词
Demagnetization; finite element method; high speed PM machine; magnetic field; power loss; thermal analysis
资金
- Royal Society, U.K.
- National Natural Science Foundation, China [5141101208]
- EPSRC [EP/K008552/3] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [1511833, EP/K008552/3] Funding Source: researchfish
High-speed permanent magnet synchronous machines (PMSMs) have attracted much attention due to their high power density, high efficiency, and compact size for direct-drive applications. However, the consequent power loss density is high, and hence heat dissipation is a major technical challenge. This is particularly the case for high-speed operation. In this paper, a MW level high-speed PMSM is designed and its electromagnetic and mechanical power losses comprehensively investigated using finite element analysis. The transient machine demagnetization performance is studied, and a composite rotor structure is proposed to improve machine antidemagnetization capability. The temperature distribution of the proposed high-speed PMSM is also analyzed using a fluid-thermal coupling method with calculated power loss. Experiments conducted on a prototype of the high-speed PMSM demonstrate the effectiveness of the numerical models developed and validate the results obtained.
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