Analytical Thermal Model for Fast Stator Winding Temperature Prediction

Sciascera, Claudio; Giangrande, Paolo; Papini, Luca; Gerada, Chris; Galea, Michael

doi:10.1109/tie.2017.2682010

Cited by 158 publications

(111 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These include new magnetic and electrical materials [118,119], advanced modelling [120,121] and manufacturing processes [122,123], new thermal management techniques [124][125][126], high-speed systems [116] and better understanding of failure mechanisms [127,128]. The latter involves advancements in power electronics (e.g.…”

Section: ) Enabling Technologiesmentioning

confidence: 99%

Electrical Power Generation in Aircraft: Review, Challenges, and Opportunities

Madonna

Giangrande

Galea

2018

IEEE Trans. Transp. Electrific.

Self Cite

461

194

View full text Add to dashboard Cite

Abstract-The constant growth of air traffic, the demand for performance optimization and the need for decreasing both operating and maintenance costs have encouraged the aircraft industry to move towards more electric solutions. As a result of this trend, electric power required on board of aircraft has significantly increased through the years, causing major changes in electric power system architectures. Considering this scenario, the paper gives a review about the evolution of electric power generation systems in aircraft. The major achievements are highlighted and the rationale behind some significant developments discussed. After a brief historical overview of the early DC generators (both wind-and engine-driven), the reasons which brought the definitive passage to the AC generation, for larger aircraft, are presented and explained. Several AC generation systems are investigated with particular attention being focused on the voltage levels and the generator technology. Further, examples of commercial aircraft implementing AC generation systems are provided. Finally, the trends towards modern generation systems are also considered giving prominence to their challenges and feasibility.

show abstract

Section: ) Enabling Technologiesmentioning

confidence: 99%

Electrical Power Generation in Aircraft: Review, Challenges, and Opportunities

Madonna

Giangrande

Galea

2018

IEEE Trans. Transp. Electrific.

Self Cite

461

194

View full text Add to dashboard Cite

show abstract

“…At high speeds, the eddy currents inside the permanent magnets generate significant losses, which could increase the permanent magnet temperature causing demagnetization [21,22]. In case of fractional slot PMSM with concentrated winding, this issue is more critical due to the high harmonic content of the armature field [3].…”

Section: B Stator Core Lossmentioning

confidence: 99%

Design and Losses Analysis of a High Power Density Machine for Flooded Pump Applications

Al-Timimy

Giangrande

Degano

et al. 2018

IEEE Trans. on Ind. Applicat.

Self Cite

View full text Add to dashboard Cite

Abstract-This paper describes the design process of a 10 kW 19000 rpm high power density surface mounted permanent magnet synchronous machine for a directly coupled pump application. In order to meet the required specifications, a compact machine, with cooling channels inside the slots and flooded airgap, has been designed through finite element optimization. For high power density, high speed machines, an accurate evaluation of the power losses and the electromechanical performance is always extremely challenging. In this case, the completely flooded application adds to the general complexity. Therefore this paper deals with a detailed losses analysis (copper, core, eddy current and mechanical losses) considering several operating conditions. The experimental measurements of AC copper losses as well as the material properties (BH curve and specific core losses), including the manufacturing process effect on the stator core, are presented. Accurate 3D finite element models and computational fluid dynamics analysis have been used to determine the eddy current losses in the rotor and windage losses respectively. Based on these detailed analysis, the no load and full load performance are evaluated. The experimental results, on the manufactured prototype, are finally presented to validate the machine design.Index Terms-High power density, high speed, losses calculation, performance analysis, permanent magnet motors.

show abstract

“…The study in [28] deals with a substrate for a ball grid array package, where a belt of densely populated vias and two continuous copper layers are placed; however, the model is complicated and no CFD or experimental verifications are provided. For electrical engineers, it is more desirable to have an analytical thermal model such that the temperatures of devices with different designs and cooling methods can be fast predicted [29], [30]. In [14] and [31], an analytical thermal resistance model is developed for PCB thermal pads; however, the heat transfer boundary and the convective heat transfer coefficient variation over the temperature difference are not included, causing potential errors between calculations and measurements.…”

Section: Kcumentioning

confidence: 99%

Thermal Modeling and Design Optimization of PCB Vias and Pads

Shen

Wang

Blaabjerg

et al. 2020

IEEE Trans. Power Electron.

View full text Add to dashboard Cite

Miniature power semiconductor devices mounted on printed circuit boards (PCBs) are normally cooled by means of PCB vias, copper pads, and/or heatsinks. Various reference PCB thermal designs have been provided by semiconductor manufacturers and researchers. However, the recommendations are not optimal, and there are some discrepancies among them, which may confuse electrical engineers. This paper aims to develop analytical thermal resistance models for PCB vias and pads, and further to obtain the optimal design for thermal resistance minimization. Firstly, the PCB via array is thermally modeled in terms of multiple design parameters. A systematic parametric analysis leads to an optimal trajectory for the via diameter at different PCB specifications. Then an axisymmetric thermal resistance model is developed for PCB thermal pads where the heat conduction, convection and radiation all exist; due to the interdependence between the conductive/radiative heat transfer coefficients and the board temperatures, an algorithm is proposed to fast obtain the board-ambient thermal resistance and to predict the semiconductor junction temperature. Finally, the proposed thermal models and design optimization algorithms are verified by computational fluid dynamics (CFD) simulations and experimental measurements. Index terms-thermal resistance model, thermal management, printed circuit board (PCB), PCB via, thermal pad. NOMENCLATURE Bi Biot number h Heat transfer coefficient (W/(m 2 •K)) hconv Convective heat transfer coefficient (W/(m 2 •K)) hradi Radiative heat transfer coefficient (W/(m 2 •K)) k Thermal conductivity of a material (W/(m•K)) k1 Lateral thermal conductivity of the copper zone (W/(m 2 •K)) k2 Lateral thermal conductivity of the FR4 zone (W/(m 2 •K))

show abstract

Analytical Thermal Model for Fast Stator Winding Temperature Prediction

Abstract: Michael (2017) Analytical thermal model for fast stator winding temperature prediction. IEEE Transactions on Industrial Electronics, 64 (8).

Cited by 158 publications

References 26 publications

Electrical Power Generation in Aircraft: Review, Challenges, and Opportunities

Electrical Power Generation in Aircraft: Review, Challenges, and Opportunities

Design and Losses Analysis of a High Power Density Machine for Flooded Pump Applications

Thermal Modeling and Design Optimization of PCB Vias and Pads

Contact Info

Product

Resources

About