Analysis of Transient Magnetic Force on End-Winding in the Inverter-Fed Induction Machine

Tang, Liezheng; Ruan, Jiangjun; Hengyu, Ding; Huang, Tao; Liu, Hailong

doi:10.1007/s42835-019-00312-9

Cited by 2 publications

(3 citation statements)

References 13 publications

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“…( ), ( ), ( ) x t x t and x t ɺ ɺɺ are the displacement, velocity and acceleration response matrix, respectively. Since the displacement and the velocity are relatively tiny, so we simplify the above equation as (10). It is shown that the acceleration is in proportion to the force approximately.…”

Section: Vibration Responsementioning

confidence: 99%

“…The order of magnitude is 1 and 100 for deformation and velocity respectively, but it is up to 10 5 for acceleration, so it can explain the transformation of Eq. ( 9) to (10).…”

Section: Mechanical Response Simulation In Ansysmentioning

confidence: 99%

“…It is found that the analytical calculation method is tedious and laborious, while the finite element simulation software is more suitable for the complex structure analysis of the end winding. The distribution of electromagnetic force on the end winding in normal condition, single-phase short circuit, two-phase short circuit, and three-phase short circuit case is analyzed [1,[8][9][10]. It is shown that the force density will decrease with the increasing of distance from the core, and the radial forces on the inner layer are stronger than those on the outer layer.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analysis on Electromagnetic Force Properties of End Windings in Turbo-Generators

Tang¹,

Jiang²,

Vakil³

2020

IJECEC

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Electromagnetic forces on the end windings will stimulate intensive vibrations and cause insulation wearing, and the vibration wear will further induce the coil short circuit. Eventually accidents and losses will be brought. Therefore, it is of great significance to study the electromagnetic force properties of end windings. This paper studied on the electromagnetic force properties of end windings in turbo-generators. Firstly, the magnetic field in the end region was analyzed by winding MMF superposition principle and air gap magnetic conductivity method, and the electromagnetic force is got with Ampere law. Then, taking QFSN-600-2YHG turbo-generator as study object, the 3 directional electromagnetic forces and the mechanical responses on the end windings were calculate by electromagnetic-structure coupling finite element analysis method. Finally, the experiment vibrations are tested, and the acceleration data was compared with simulated result. It is shown that each directional electromagnetic force contains both the DC component and even harmonics, which will result in the winding vibration mainly at the double fundamental frequency. Meantime, the radial acceleration is the largest and the axial one is the least, so the radial vibration should be paid more attention to in daily monitoring. Moreover, the max deformation mainly occurs on the nose and middle part of the involute, and these locations should be strengthened in design and manufacture.

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Section: Vibration Responsementioning

confidence: 99%

“…The order of magnitude is 1 and 100 for deformation and velocity respectively, but it is up to 10 5 for acceleration, so it can explain the transformation of Eq. ( 9) to (10).…”

Section: Mechanical Response Simulation In Ansysmentioning

confidence: 99%