A simplified thermal model for variable-speed self-cooled industrial induction motor

Boglietti, Aldo; Cavagnino, Andrea; Lazzari, M.; Pastorelli, Anna Maria

doi:10.1109/tia.2003.814555

Cited by 315 publications

(132 citation statements)

References 3 publications

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“…However, in the most recent publications Lumped Parameter Modelingmethodsare described and used to the electrical machines thermal calculations [1,[4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…Growing demands on the efficiency of electric motors, as well as economic aspects and diversity of application cause that in the design of electrical machines not only electrical parameters are important.The higher reliability, minimize weight and dimensions, high strength, and appropriate vibration, noise and thermal stateparameters are required from actually designed and manufactured electrical machines [1,[4][5][6]10]. In other words, electrical machines should be optimized to working conditions in which they are operated.…”

Section: Introductionmentioning

confidence: 99%

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2015

EiN

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The innovaTive design concepT of Thermal model for The calculaTion of The elecTromagneTic circuiT of roTaTing elecTrical machines innowacyjna koncepcja budowy obliczeniowego modelu cieplnego dla obwodu elekTromagneTycznego wirujących maszyn elekTrycznych* Operating parameters and reliability of rotating electrical machines are connected to a large extent with their thermal state. The high temperature of these devices has an impact on the life of such elements as bearings, windings, andalso efficiency and possibility of their use. More often, during the analysis of the existingand new designs of electrical machines,the thermal and mechanical calculations are carried out. The finite element method which uses spatial models is commonly used in such calculations. The correct formulation of boundary conditionsand the appropriate model simplifications are the key problems. Parameters calibration of thecalculation model in order to obtain adequate calculations results to the actual device operation is necessary to performed. The innovative conception for determining the thermal parameters of the numerical model for the most complex structure of electrical machinery, which is the electromagnetic circuit, is presented in this paper. During the preparation of the thermal IntroductionGrowing demands on the efficiency of electric motors, as well as economic aspects and diversity of application cause that in the design of electrical machines not only electrical parameters are important.The higher reliability, minimize weight and dimensions, high strength, and appropriate vibration, noise and thermal stateparameters are required from actually designed and manufactured electrical machines [1,[4][5][6]10]. In other words, electrical machines should be optimized to working conditions in which they are operated. This approach necessitate development of newer and more elaborate design. At the same time in the design process of modern electrical machines the interdisciplinary knowledge in the field of electrical engineering, electronics, strength sciENcE aNd tEchNology of materials, thermodynamics, fluid mechanics and acoustics is required from constructor.The development of computer technology and constantly increasing computing capabilities have contributed to the development of numerical methods and increasing popularity of programs supporting the work of design engineers. Skillful use of specialized software in the design of electrical machines can increase the efficiency of project work and motor durability simultaneously reducing their weight, vibration, noise and temperature. In the available publications, it can be seen that more often to thedesign analysis of electrical machine researchers use sophisticated computational programs. In addition to the mechanical analysis, software for thermal and flowanalysis based on FEM and CFD or the Lumped Parameter Modelingis becoming more popular [2].In the literature related to this subject, different ways of modeling and calibration of computational models and related problemscan be...

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“…However, in the most recent publications Lumped Parameter Modelingmethodsare described and used to the electrical machines thermal calculations [1,[4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Untitled

2015

EiN

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“…Thermal analysis can be divided into two basic types: analytical lumped circuit and numerical methods. The analytical approach has the advantage of being very fast to calculate, but the developer of the network model must invest effort in defining a circuit that accurately models the main heat transfer paths [7][8][9][10]. Lumped circuit techniques are essential if the designer is to thermally evaluate many complex and long duty cycles.…”

Section: Introductionmentioning

confidence: 99%

Thermal modelling of a fractional-slot concentrated-winding Kaman type Axial-Flux Permanent-Magnet machine

Vainel

Staton

Capponi

et al. 2013

2013 IEEE Energy Conversion Congress and Exposition

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The aim of the paper is to present the thermal modeling of a Kaman type Axial-Flux Permanent-Magnet machine with fractional-slot concentrated-winding. This machine is air-cooled and equipped with specific arrangements to enhance heat dissipation. Thermal paths inside the machine are quite complex and require three-dimensional modelling. This is achieved through a lumped parameter network and subdivision of machine into cuboidal elements. The paper describes how thermal modeling is achieved and compares simulations with experimental results taken from a full scale prototype equipped with a number of thermocouples.

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“…Rotor temperature can be determined with the help of the estimated resistance of the rotor cage. This task can be performed by evaluating the equations of the induction machine accordingly [1][2][3][4][5] . Consequently, some of the machine parameters have to be determined in order to be able to compute the rotor resistance [6] .…”

Section: Introductionmentioning

confidence: 99%

Estimation of Stator Resistance and Temperature Measurement in Induction Motor Using Wavelet Network

Wei-li

Huang

Liu

2006

2007 Chinese Control Conference

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To complete induction motor thermal protection, a novel stator resistance estimation approach for stator winding temperature monitoring based on wavelet network and parameter identification is presented. By the use of wavelet network that accurately localizes the characteristics of a signal in the time frequency domains, the occurring instants of the signal change can be identified by the multi-scale representation analysis. The stator and rotor resistance are calculated using mathematical model and the motor speed is estimated by use of wavelet network, and then the temperature is obtained according to the principle that the metal resistance depends on its temperature. The improved least squares algorithm (LSA) transform is used to fulfill the network structure and parameter identification, and then the mapping relationship between the stator voltage, stator current, power factor angle and the rotor speed is determined using the wavelet network. The simulation results demonstrate that the proposed method is effective for temperature monitoring of asynchronous motor.

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A simplified thermal model for variable-speed self-cooled industrial induction motor

Cited by 315 publications

References 3 publications

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Thermal modelling of a fractional-slot concentrated-winding Kaman type Axial-Flux Permanent-Magnet machine

Estimation of Stator Resistance and Temperature Measurement in Induction Motor Using Wavelet Network

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