Affiliations: College of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin, Heilongjiang, China
Correspondence:
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Corresponding author: Pin Lv, College of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, Heilongjiang, China. Tel.: +86 152 46772956; E-mail:lvpin@hrbust.edu.cn
Abstract: With the forthcoming global energy crisis, the nuclear
power has a broader range of the applications. At the same time, the safe
operation of the nuclear turbo-generator, particularly the calculation of
the rotor shaft vibration, becomes incredibly important. This paper takes a
nuclear power turbo-generator as an example and the finite element
calculation model has been built up. During the process of the analytic
algorithm, the current vector caused by the rotating rotor is replaced by
the three-phase current vector induced by the static rotor windings. When
symmetrical component transform and dq0 transform employed, the impact of
positive current vector and negative current vector on the constant and
second harmonic part of the electromagnetic torque has been discussed. Then
a novel method for second harmonic electromagnetic torque calculation has
been proposed. The data of the finite element algorithm is consistent with
that of analytic algorithm, verifying the correctness of the method proposed
by this paper.
Keywords: Nuclear turbo-generator, rotor shaft vibration, analytic algorithm, finite element algorithm, second harmonic electromagnetic torque calculation
