Analysis of the effect of radial rotor surface grooves on rotor losses of high speed solid rotor induction motor

Gessese, Yoseph; Binder, A.; Funieru, Bogdan

doi:10.1109/speedam.2010.5544763

Cited by 12 publications

(8 citation statements)

References 5 publications

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“…Numerical methods [8], [9], [13], [21], [23]- [26], [29]- [31], [34]- [40] (finite elements in particular) are more frequently used when analysing general HSIMs. This has to do with their reliability and practicability which allows modelling from simple structures to more complex topologies.…”

Section: Electromagnetic Methods To Analyse Hsimsmentioning

confidence: 99%

“…This has to do with their reliability and practicability which allows modelling from simple structures to more complex topologies. Time-stepping numerical methods [24], [29], [34]- [37] are also used regularly to obtain better accuracy in the predictions of the motor operation and also to optimise the design, because it takes into account the nonlinear behaviour of the materials in the machine. A finer mesh usually provides more accurate results; however, this also increases the processing time.…”

Section: Electromagnetic Methods To Analyse Hsimsmentioning

confidence: 99%

“…[28] presented an approach to analyse these type of rotors. In the high-speed area, slitted SRs have been researched by a number of authors [4], [20], [21], [26], [29]- [34]. The rotor slitting improves the penetration depth of the flux density in the rotor material and has a significant impact in the rotor performance producing better torque properties, higher…”

Section: Laminated Rotor Hsimsmentioning

confidence: 99%

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Electromagnetic modelling of high speed induction motors

Velázquez¹,

Smith²

2016

8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016)

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Improvement in the power density of induction machines can be achieved when they operate at high rotational speeds using frequency converters that provide a higher frequency supply to the motor. Applications such as compressors require intrinsically high-speed operation. In these cases the mechanical integrity is prioritized over the electromagnetic performance and solid rotors are normally used instead of laminated rotors so they can withstand the peripheral and radial stresses caused by the high speeds. Small skin depths are associated with solid rotor structures; this complicates the electromagnetic analysis when FE modelling is used because a fine mesh is typically required. Although analytical methods in general tend to be less accurate than FE models, they can provide faster and reasonably accurate results. This thesis evaluates the use of an analytical multi-layer model as a preliminary design tool for determining the electromagnetic performance of high-speed copper-coated solid rotors. A simple FE model is developed in order to validate the results obtained from the analytical model. The input to the analytical multi-layer and FE models is normally current; consequently they are modified to work with voltage as the input reference. The multi-layer model is compared under constant current operation and constant voltage operation. The limitations of the analytical multi-layer model are highlighted. Declaration 13 Declaration No portion of the work referred to in the thesis has been submitted in support of an application for another degree or qualification of this or any other university or other institute of learning.

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Section: Electromagnetic Methods To Analyse Hsimsmentioning

confidence: 99%

Section: Electromagnetic Methods To Analyse Hsimsmentioning

confidence: 99%

Section: Laminated Rotor Hsimsmentioning

confidence: 99%

See 1 more Smart Citation

Electromagnetic modelling of high speed induction motors

Velázquez¹,

Smith²

2016

8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016)

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“…In the research of traditional solid IMs, by designing the rotor structure such as slot or slot with copper cast in slots to modify the air-gap magnetic field, the motors' performances are improved [12][13][14][15][16][17]. In [13], the additional torque caused by slot ripples has been researched.…”

Section: Introductionmentioning

confidence: 99%

Mover design and characteristics analysis of 2DoFDDIM

Wang

Feng

et al. 2017

IET Electric Power Applications

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Two degree-of-freedom direct drive induction motor (2DoFDDIM), capable of rotary, linear and helical motion, has widespread application. A new mover structure is proposed, which is made from a hollow cylinder with copper cast in the axial slots and the circumferential slots on its surface. Then 3D finite element models of 2DoFDDIM are used to determine the performances of rotary, linear and helical motion developed by the motor. The results show that the new mover has a great improvement on the motor performances of all modes of motion compared to the initial mover. The researches on mover structure and characteristics of 2DoFDDIM present a new path of optimization on 2DoF induction motor.

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“…[18] focused on the additional loss of a solid rotor induction motor by using a two-dimensional (2-D) numerical method. [19] studied the influence of slotting on the rotor loss of a solid rotor induction motor. It can be seen that these structures are characterized with high mechanical robustness and simplicity, high reliability and controllability, and low manufacturing and maintenance costs.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of a 2-DOF Split-Stator Induction Motor

Feng

et al. 2015

IEEE Trans. Energy Convers.

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A two degrees of freedom (2-DOF) actuator capable of producing linear translation, rotary motion, or helical motion would be a desirable asset to the fields of machine tools, robotics, and various apparatuses. In this paper, a novel 2-DOF split-stator induction motor was proposed and electromagnetic structure parameters of the motor were designed and optimized. The feature of the direct-drive 2-DOF induction motor lies in its solid mover arrangement. In order to study the complex distribution of the eddy current field on the ferromagnetic cylinder mover and the motor's operating characteristics, the mathematical model of the proposed motor was established, and characteristics of the motor were analyzed by adopting the permeation depth method (PDM) and finite element method (FEM). The analytical and numerical results from motor simulation clearly show a correlation between the PDM and FEM models. This may be considered as a fair justification for the proposed machine and design tools.Index Terms-Finite element method (FEM), induction motor, permeation depth method (PDM), solid rotor, split stator, two degrees of freedom (2-DOF).

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Analysis of the effect of radial rotor surface grooves on rotor losses of high speed solid rotor induction motor

Cited by 12 publications

References 5 publications

Electromagnetic modelling of high speed induction motors

Electromagnetic modelling of high speed induction motors

Mover design and characteristics analysis of 2DoFDDIM

Design and Analysis of a 2-DOF Split-Stator Induction Motor

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