A study on oscillatory and effective torques of an line-start PM motor in start-up operation

Choi, Myoung-Hyun; Rhyu, Se-Hyun; Kim, Byung-Taek

doi:10.3233/jae-2012-1545

Cited by 2 publications

(2 citation statements)

References 1 publication

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“…The key reasons are: the higher efficiency and power factor of LSPMSM in relation to the classical asynchronous motors together with no need to use the power electronics drives that are necessary to operate the classical permanent magnet synchronous motors [4,5]. To achieve the line start feature, the rotors of the LSPMSM contain the squirrel cage winding [6][7][8]. The authors of this paper have analyzed the asynchronous torque of LSPMSM for squirrel cage geometry adjusted to improve the asynchronous as well as synchronous operation.…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis of the asynchronous torque in LSPMSM with non-symmetrical squirrel cage winding

Jędryczka

Wojciechowski

Demenko

2014

JAE

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The paper focuses on the analysis of the asynchronous torque of the line start permanent magnet synchronous motor (LSPMSM) with the asymmetrical squirrel cage winding. In order to calculate the asynchronous torque the parametrical fieldcircuit models of LSPMSM have been elaborated on. Further, the models have been applied to investigate the impact of squirrel cage asymmetry on the asynchronous torque. The evaluated asynchronous torque vs. rotor speed characteristic of proposed motor with asymmetrical cage has been compared with the characteristics of reference asynchronous motor and LSPMSM with symmetrical cage winding. It has been found that deepening of chosen bars of the cage improves the starting properties of the LSPMSM.

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Section: Introductionmentioning

confidence: 99%

Finite element analysis of the asynchronous torque in LSPMSM with non-symmetrical squirrel cage winding

Jędryczka

Wojciechowski

Demenko

2014

JAE

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“…The negative frequencies are merely byproducts in the Fourier transfer process. Compared with the traditional FFT approach [29,30], the proposed method is more effective in that each GFRF need not be separately estimated from the measured signals. Any order GFRF can be directly computed using the NARX model fitted to the measured signals.…”

Section: Methodsmentioning

confidence: 99%

Use of electromagnetic induced flow fluctuations in a nanofluidic-assisted cooling device

Su¹,

Wu²,

Lee

2015

JAE

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In this study, an electromagnetically controlled cooling device (ECCD) is proposed, employing magnetic nanofluid (MNF) and electromagnetohydrodynamics to ameliorate the waste-heat dissipation of mechatronic systems. The MNF was charged in a condenser chamber as an auxiliary coolant, and was prepared from fine ferromagnetic particles of iron ferrite by using a chemical coprecipitation technique. A radial basis function neural network-based training model was employed for examining the electromagnetic resonance of the ECCD at a wide heating range. Satisfactory agreement between the experimental and predicted results indicated the accuracy of the model in capturing the ECCD dynamics. The nonlinearity of ECCD dynamics were also identified as a feature of frequency resonance by mapping a discrete-time model into generalized frequency response functions (GFRFs). Accordingly, the effect of electromagnetic induction relating to ECCD performance can be further confirmed.

show abstract

A study on oscillatory and effective torques of an line-start PM motor in start-up operation

Cited by 2 publications

References 1 publication

Finite element analysis of the asynchronous torque in LSPMSM with non-symmetrical squirrel cage winding

Finite element analysis of the asynchronous torque in LSPMSM with non-symmetrical squirrel cage winding

Use of electromagnetic induced flow fluctuations in a nanofluidic-assisted cooling device

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