A thermal analysis of induction motors using a weak coupled modeling

Bastos, J.P.A.; Cabreira, M.F.R.R.; Sadowski, N.; Arruda, S.R.; Nau, Sebastião Lauro

doi:10.1109/20.582603

Cited by 48 publications

(23 citation statements)

References 5 publications

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“…Given the high relative speed in the air-gap it was proved experimentally in [25] that heat transfer by conduction and convection between rotor and stator can be modeled considering the air-gap as a thermal resistance. By assuming a value approximately ten times the resistivity between elements, both phenomena are included.…”

Section: B Air-gap Representationmentioning

confidence: 99%

Multi-Domain Model for Electric Traction Drives Using Bond Graphs

Silva¹,

Barrera²,

Angelo³

et al. 2011

Journal of Power Electronics

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In this work the Multi-Domain model of an electric vehicle is developed. The electric domain model consists on the traction drive and allows including faults associated with stator winding. The thermal model is based on a spatial discretization. It receives the power dissipated in the electric domain, it interacts with the environment and provides the temperature distribution in the induction motor. The mechanical model is a half vehicle model. Given that all models are obtained using the same approach (Bond Graph) their integration becomes straightforward. This complete model allows simulating the whole system dynamics and the analysis of electrical/mechanical/thermal interaction. First, experimental results are aimed to validate the proposed model. Then, simulation results illustrate the interaction between the different domains and highlight the capability of including faults.

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Section: B Air-gap Representationmentioning

confidence: 99%

Multi-Domain Model for Electric Traction Drives Using Bond Graphs

Silva¹,

Barrera²,

Angelo³

et al. 2011

Journal of Power Electronics

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“…The finite element method is particularly sound for solving transient or steady-state problems with large temperature gradients within individual machine parts, like, high-inertia starts, unbalanced operation or thermal asymmetries caused by ventilation failure in large machines [8,9]. The main problem of the finite element method is that three dimensional and timedependent problems are challenging both in software development and hardware requirements [10]. A lumped parameter model is used in the thermal aspect of the machine model [11][12][13].The aim of the reduction of heat energy in induction machine is to develop an appropriate thermal model that can be used as a tool for constructing and monitoring of induction motors and to illustrate all associated problems and aspects of implementation.…”

Section: Introductionmentioning

confidence: 99%

Electrical-Thermal Coupling of Induction Machine for Improved Thermal Performance

Irokwe

Okoro

2016

Nig. J. Tech.

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This paper summarizes the electrical-thermal coupling of induction machine for improved thermal performance. The interaction of its electrical and mechanical parts leads to an increase in temperature which if not properly monitored may lead to breakdown of the machine. The paper therefore, set out to study the effect of electrical and thermal model on the machine. A two-mass system is used to model the mechanical part of the machine. A lumped parameter method was used in the thermal model of the machine. The system of non-linear ordinary differential equations which describe the thermal behaviour of the machine in transient state were solved numerically using the fourth-order Runge-Kutta method. MATLAB m-files were developed and were used to solve the coupled machine model under transient condition. The thermal resistances and capacitances were determined and calculated with the help of purely dimensional information from the machine geometry and constant thermal coefficients and their values were accepted as inputs by the MATLAB m-files. The results show that the temperature rise for various parts of the machine with the rotor iron and bar having a peak temperature rise of 229 o C at approximately 0.15s during motor start-up.

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“…Due to the slight increase in loss caused by temperature change, efficiency decrease is not obvious within short time. Normally we regard the temperature field and electromagnetic field as non-coupling treatment, which indicates that loss does not vary with time, or efficiency [2]. K. Farsane [3] et al measured the temperature, flow display and velocity, pointed out the correlation between the thermal and aerodynamic conditions of the motor and modify the geometry of the motor body to significantly improve the cooling effect.…”

mentioning

confidence: 99%

Simulation Researches on Thermal Characteristics of Vehicular In-wheel Motors

Yao¹,

Zhang²,

Zhang³

2017

Proceedings of the 3rd 2017 International Conference on Sustainable Development (ICSD 2017)

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Abstract. The thermal characteristics of In-wheel Motor is one of the key technologies for the motors used in the New Energy Vehicles. In this paper, the thermal simulation model of in-wheel motor used for solar car was established, the thermal characteristics of In-wheel motor were analyzed by building the mass flow and heat-transfer coupling simulation model. The motor temperature field data were acquired by simulation combined with the actual work conditions. The simulation air cooling model of in-wheel motor and verification researches were carried out, which provides the basis for the further thermal design and optimization of In-wheel motor structure. OverviewIn response to the increasingly stringent environmental protection and low energy consumption challenges, electric vehicle, as the mainstream of the new energy vehicles, has been developing rapidly. Motor is one of the key components for new energy vehicles, and its technological progress has a great impact on vehicle's performance. In-wheel motor is the future direction of new energy electric vehicles development, which can not only save the car space but also achieve independent drive control. However, practical application of In-wheel motor must deal with problems like thermal stress, torque fluctuations and compact structure.Many scholars have conducted a lot of researches regarding motor cooling. Jinxin Fan [1] etc. used the lumped thermal parameter method to analyze the thermal behavior of the motor in the actual working condition. Due to the slight increase in loss caused by temperature change, efficiency decrease is not obvious within short time. Normally we regard the temperature field and electromagnetic field as non-coupling treatment, which indicates that loss does not vary with time, or efficiency [2]. K. Farsane [3] et al. measured the temperature, flow display and velocity, pointed out the correlation between the thermal and aerodynamic conditions of the motor and modify the geometry of the motor body to significantly improve the cooling effect. Lukas Kung [4] and others, based on aerodynamics, improved the 2-15MW self-ventilation in aspects including stator bar and rotor inlet, which brings better cooling effect.Despite the researches mentioned above, thermal characteristics for In-wheel motor is a problem that few people concentrated and which must be solved for real application. This paper conducted simulation research on the heat dissipation of the solar car in-wheel motor. Based on the heat dissipation model, the simulation research was carried out, and the model was also validated. The Cooling Model of Pmsm In-Wheel MotorThe permanent magnet synchronous in-wheel motor used in this research is an external rotor structure, which is shown in Fig. 1, including the outer rotor, stator, magnet and position sensors. 329This is an open access article under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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A thermal analysis of induction motors using a weak coupled modeling

Cited by 48 publications

References 5 publications

Multi-Domain Model for Electric Traction Drives Using Bond Graphs

Multi-Domain Model for Electric Traction Drives Using Bond Graphs

Electrical-Thermal Coupling of Induction Machine for Improved Thermal Performance

Simulation Researches on Thermal Characteristics of Vehicular In-wheel Motors

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