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The rotor eccentricity of a large hydro-generator could cause a huge radial magnetic force, known as an unbalanced magnetic pull (UMP), exerting on the rotor. In this paper, Maxwell stress tensor (MST) method is used to compute the UMP based on the 2-D finite-element (FE) calculation, and the accuracy of UMP FE calculations is investigated. This paper presents a new method for the FE calculation of...
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