Thermal analysis and experimental verification of a staggered‐teeth transverse‐flux permanent‐magnet linear machine

Zhang, Shukuan; Zheng, Ping; Yu, Bin; Cheng, Luming; Wang, Mingqiao

doi:10.1049/iet-epa.2017.0828

Cited by 16 publications

(10 citation statements)

References 17 publications

(22 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The permanent magnet of the moving-magnet linear generator can be passively cooled as a mover, and the stator part can be forcedly cooled by water-cooling or oil-cooling. Since permanent magnets are the main failure form of permanent magnet linear generators due to high temperature demagnetization, it is necessary to study the temperature rise of the moving-magnet of the PMMLG [27], [28].…”

Section: Thermal Analysis Of the Pmmlgmentioning

confidence: 99%

A Plate Moving-Magnet Linear Generator Designed for Free-Piston Engines

Sun

Liu

2020

IEEE Access

View full text Add to dashboard Cite

Free-piston engine coupled with linear generator is a research hotspot in the field of novel vehicle mounted power generation devices. A plate moving-magnet linear generator (PMMLG) is proposed and designed for free-piston engines in this paper. Magnetic circuit of the novel linear generator is analyzed and modeled in detail. The dimensions of a 2 kW prototype with the max stroke of 40 mm and the max electromagnetic force of 800 N is designed by using the derived magnetic circuit model. Static and transient electromagnetic field finite element models with motion solvers are created. Magnetic field distribution, electromagnetic force characteristics, EMF characteristics, coil inductance, generating power and losses of the linear generator are analyzed and compared with two reported prototypes. Computational fluid dynamics model of the PMMLG is established, and the temperature field is analyzed to verify that the air-cooling conditions can ensure long-term stable running of the linear generator without demagnetization. The research results show that the linear generator has the characteristics of low moving mass, low cogging force, high generating efficiency and high response speed. INDEX TERMS Linear generator, electromagnetic analysis, thermal analysis, free-piston.

show abstract

Section: Thermal Analysis Of the Pmmlgmentioning

confidence: 99%

A Plate Moving-Magnet Linear Generator Designed for Free-Piston Engines

Sun

Liu

2020

IEEE Access

View full text Add to dashboard Cite

show abstract

“…In [11], M. Lihong et al presented a three-dimensional (3-D) LPTN model for flux-switching permanent magnet machine, whereby the results verified that the defined LPTN model had a favorable ability to predict the nodal temperatures with high accuracy. In [12], Z. Shukuan et al evaluated a three-terminal LPTN to deal with temperature overestimation in the traditional LPTN. In [13], C. Qixu et al explored the possibility of increasing the number of node in LPTN to improve the accuracy of the thermal analysis.…”

Section: Thermal Resistance Between Winding and Tooth R T-cp Thermal mentioning

confidence: 99%

Improving Thermal Analysis Accuracy of LPTN for Vehicle Claw-Pole Alternator by Calibrating Forced Convection Coefficients Based on Experimental Results

Zhang

2019

IEEE Access

View full text Add to dashboard Cite

Claw-pole alternators are particularly important for vehicle power generation due to their low cost, simple design, and mechanical robustness. High and low temperatures around vehicle claw-pole alternators (VCPAs) change their internal temperature distributions, thus thermal analysis is required for designing VCPAs. Aiming at improving the accuracy of evaluating the temperature of VCPAs, a novel lumped parameter thermal network (LPTN) is proposed to analyze the steady-state temperature of a double excitation VCPA under various ambient temperatures. The forced convection coefficients are calibrated in order that the LPTN can simulate the real heat transfer of the VCPA. The nonlinear least square method is applied to obtain the calibrated coefficients within a range of the tested ambient temperatures. Moreover, the effectiveness of the proposed method is verified via simulation studies, whereby the results show that the proposed LPTN with calibrated convection coefficients can accurately evaluate the temperature of VCPAs. Finally, these results soundly supply the technical knowledge for the thermal analysis and facilitate selecting the optimal scheme for machine designers.

show abstract

“…In this aspect, the analytical methods can be precise enough and much faster than their numerical counterparts [1,3,4,15,16]. The most common analytical approach for the analysis of the thermal behavior of electrical machines is the usage of Lumped Parameter (LP) thermal circuits [17][18][19]. In these models, the different heat flux paths are modeled with thermal resistors and capacitors [1].…”

Section: Introductionmentioning

confidence: 99%

“…For linear machines, both 2D [17,18,21] and 3D [19,[22][23][24] LP thermal networks have been used in the literature. In order to simplify the thermal networks, some of the authors propose to employ symmetries, thus halving the amount of elements per each applied symmetry [22,23].…”

Section: Introductionmentioning

confidence: 99%

Development of a Thermal Analysis Tool for Linear Machines

et al. 2021

View full text Add to dashboard Cite

The thermal design is one of the most important stages in the design process of electrical machines. Thanks to software packages, like Motor-CAD, rotating machine designers can predict the thermal operation of the machines with high precision. However, a Motor-CAD equivalent for linear machines does not exist. Thus, linear machine designers must develop specific thermal analysis tools when designing the machines. In this article, a generic thermal analysis tool for different kinds of linear machines is presented. The model has been designed in MATLAB Simulink. Hence, it should be easy to implement for most engineers. The article describes the configuration of the different elements of the tool. The calibration parameters and procedure, and typical values of the calibration variables, are also given in the document. Finally, in order to demonstrate the generic nature of the tool, the model is experimentally validated via DC thermal tests to a linear induction machine and a linear switched-flux permanent magnet machine. The results show that, despite being simple and easy to implement, the model can predict the thermal operation of different machines with high precision.

show abstract

Thermal analysis and experimental verification of a staggered‐teeth transverse‐flux permanent‐magnet linear machine

Cited by 16 publications

References 17 publications

A Plate Moving-Magnet Linear Generator Designed for Free-Piston Engines

A Plate Moving-Magnet Linear Generator Designed for Free-Piston Engines

Improving Thermal Analysis Accuracy of LPTN for Vehicle Claw-Pole Alternator by Calibrating Forced Convection Coefficients Based on Experimental Results

Development of a Thermal Analysis Tool for Linear Machines

Contact Info

Product

Resources

About