Design and Performance of a Water-cooled Permanent Magnet Retarder for Heavy Vehicles

Ye, Lezhi; Li, Desheng; Ma, Yanxing; Jiao, Bingfeng

doi:10.1109/tec.2011.2157347

Cited by 67 publications

(31 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Coupled magneto-thermal models, that can be found in the literature, are usually based on 2D or 3D finite elements (FE) simulations, considering either strong or weak coupling between the magnetic and thermal models [5][6][7]. Finite elements models give accurate results considering geometric details and nonlinearity for the materials behavior.…”

Section: Introductionmentioning

confidence: 99%

Design optimization of an axial-field eddy-current magnetic coupling based on magneto-thermal analytical model

et al. 2018

View full text Add to dashboard Cite

This paper presents a design optimization of an axial-flux eddy-current magnetic coupling. The design procedure is based on a torque formula derived from a 3D analytical model and a population algorithm method. The main objective of this paper is to determine the best design in terms of magnets volume in order to transmit a torque between two movers, while ensuring a low slip speed and a good efficiency. The torque formula is very accurate and computationally efficient, and is valid for any slip speed values. Nevertheless, in order to solve more realistic problems, and then, take into account the thermal effects on the torque value, a thermal model based on convection heat transfer coefficients is also established and used in the design optimization procedure. Results show the effectiveness of the proposed methodology.

show abstract

Section: Introductionmentioning

confidence: 99%

Design optimization of an axial-field eddy-current magnetic coupling based on magneto-thermal analytical model

et al. 2018

View full text Add to dashboard Cite

show abstract

“…An independent circular-shaped coil is mounted on the stator. Compared with the previous PMR proposed by Ye et al [2], the advantages of the new ECR are the design simplicity, assembly convenience, high cost performance, accuracy, and the control simplicity of the braking torque. The disadvantages are the relatively greater weight and the consumption of additional electrical power and copper.…”

Section: Introductionmentioning

confidence: 95%

“…When using air forced convective cooling, the temperature of the rotor quickly reaches temperatures of 600 • C during continuous operations, causing the braking torque to decrease by about 40% in approximately 5 min [1]. The braking torque of a permanent magnetic retarder (PMR), cooled by water forced convection, was only reduced by 10% and the temperature reached only 160 • C in 5 min [2]. The structure of the conventional ECR is complicated, containing many groups of coils, making the winding, installation, and controlling procedures of the coils complex.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis and Experimentation of a Liquid-Cooled Eddy Current Retarder With a Dual Salient Poles Design

Jiao

et al. 2014

IEEE Trans. Energy Convers.

Self Cite

View full text Add to dashboard Cite

A liquid-cooled eddy current retarder (ECR) with a dual salient poles design is proposed in this paper. Finite element models were developed to perform transient magnetic analysis and steady-state conjugate heat transfer analysis. The braking torque, eddy current field and thermal field of the retarder were each predicted. The retarder was subjected to two sets of tests on a test bench, to obtain the braking torque at various rotational speeds, while utilizing two different magnetomotive forces, respectively, and the torque was also tested while maintaining a constant rotational speed, for a specific amount of time. The good agreement shown between the calculations and measured data of the braking torque served to validate the analysis method. The experiments also showed that the braking torque of the retarder decreased more slowly than the braking torque of conventional ECRs in continuous operation.

show abstract

“…Despite the importance of motor thermal design on the potential and significant improvements in overall motor performance, there have been surprisingly less studies on the thermal behavior compared to the traditional electromagnetic design of electric motors. In general practice, the heat generated inside the motor is dissipated through the finned outer surface of the motor [10][11][12][13][14]. However, the overall electric and magnetic utilization dictates the frame size of a motor and ensuring that the maximum temperature inside the motor such that it operates without failure is of paramount importance [12].…”

Section: Introductionmentioning

confidence: 99%

“…For a fixed diameter of the motor, higher cooling rate can be achieved by improving the overall heat transfer coefficient either through an increase in the coolant flow velocity or by using a coolant with a higher thermal capacity and by employing an optimized cooling jacket configuration [16,17]. Many researchers have focused on the thermal simulation of totally enclosed fan-cooled machines to understand the complex heat exchange phenomenon prevailing in motors and to identify the most important thermal parameters in the motors in order to achieve high performance and robust design [10][11][12][13]. In the scope of EVs, the electric motor has to withstand the load exceeding its rated value for short periods of time.…”

Section: Introductionmentioning

confidence: 99%

Three-D Numerical Thermal Analysis of Electric Motor with Cooling Jacket

Rehman

Seong

2018

Energies

View full text Add to dashboard Cite

Abstract:The need of a sustainable clean future has paved the way for environmental friendly electric vehicle technology. In electric vehicles, overloading is limited by the maximum temperature rise in the electric motor. Although an improved cooling jacket design is of vital importance in lowering the maximum temperature of the motor, there has not been as much study in the thermal analysis of motors compared to electromagnetic design studies. In this study, a three-dimensional steady state numerical method is used to investigate the performance of a cooling jacket using water as the primary coolant of a three-phase induction motor with special emphasis on the maximum temperature and the required pumping power. The effective thermal conductivity approach is employed to model the stator winding, stator yoke, rotor winding and rotor yoke. Heat transfer by induced air is treated as forced convection at the motor ends and effective conductivity is obtained for air in the stator-rotor gap. Motor power losses, i.e., copper and iron losses, are treated as heat generation sources. The effect of bearings and end windings is not considered in the current model. Pressure and temperature distributions under various coolant flow rates, number of flow passes and different cooling jacket configurations are obtained. The study is successful in identifying the hot spots and understanding the critical parameters that affect the temperature profile. The cooling jacket configuration affects the region of maximum temperature inside the motor. Increasing the number of flow passes and coolant flow rate decreases maximum motor temperature but results in an increase in the pumping power. Of the cooling jacket configurations and operating conditions investigated, a cooling jacket with six passes at a flow rate of 10 LPM with two-port configuration was found to be optimal for a 90-kW induction motor for safe operation at the maximum output.

show abstract

Design and Performance of a Water-cooled Permanent Magnet Retarder for Heavy Vehicles

Cited by 67 publications

References 11 publications

Design optimization of an axial-field eddy-current magnetic coupling based on magneto-thermal analytical model

Design optimization of an axial-field eddy-current magnetic coupling based on magneto-thermal analytical model

Performance Analysis and Experimentation of a Liquid-Cooled Eddy Current Retarder With a Dual Salient Poles Design

Three-D Numerical Thermal Analysis of Electric Motor with Cooling Jacket

Contact Info

Product

Resources

About