Lumped Parameter Thermal Modeling of Permanent Magnet Synchronous Motor

Kacenka, Andrei; Pop, Adrian-Cornel; Vintiloiu, Ioana; Fodorean, Daniel

doi:10.1109/ev.2019.8892937

Cited by 13 publications

(5 citation statements)

References 12 publications

(17 reference statements)

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“…Based on equations ( 27)-( 33), the loss components and the total loss can be obtained, as listed in Table 9. Based on equation (34), the rated efficiency ηn is 91%, which is only 1% higher than that provided by the manufacturer shown in Table 2.…”

mentioning

confidence: 71%

A Lumped Parameter Thermal Model for Single-Sided AFPM Machines With Experimental Validation

Burke

Giedymin

et al. 2020

IEEE Trans. Transp. Electrific.

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Axial flux permanent magnet (AFPM) machines are promising for hybrid electric vehicles (HEVs) due to the compactness, high torque density and high efficiency. However, poor thermal characterization leads to an over-sizing of these machines which ultimately compromises overall system efficiency. In this paper, the transient thermal behaviour of all the components in the single sided AFPM machine are characterized in an accurate but computationally efficient lumped parameter thermal model (LPTM). For the first time, contact measurements on the rotor have been used in AFPM machines to demonstrate the ability of the model to predict all component temperatures to within 4 °C for steady state. The mean temperature error over a load step transient was less than 5°C with a maximum error less than 13.5 °C which was for the winding. The model has a running time of approximately 1000 times faster than real time on a desktop machine and is suitable for integration into system simulation tools and predictive control strategies to avoid over-sizing of the motor and improve the usage of the electric machine in dynamic duty cycles.

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mentioning

confidence: 71%

A Lumped Parameter Thermal Model for Single-Sided AFPM Machines With Experimental Validation

Burke

Giedymin

et al. 2020

IEEE Trans. Transp. Electrific.

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“…The following presumptions are made in order to establish the LPTN for the thermal modelling of the PMSM prototype [23,24]:…”

Section: Lptn Establishment and Simulationsmentioning

confidence: 99%

“…The following presumptions are made in order to establish the LPTN for the thermal modelling of the PMSM prototype [23, 24]: The permanent magnet motor has the same cooling conditions in the circumferential direction and the temperature field is symmetrical along the circumferential direction. The armature winding has a temperature gradient along the axial direction. The nodes in the cavity section at each end of the motor are considered symmetrical temperature nodes. The windings' skin effect is disregarded. As the radiation impacts on small and medium PMSMs are minimal, the heat dissipation produced by radiation is disregarded. …”

Section: End‐winding Model For Lptn Calculationsmentioning

confidence: 99%

End‐winding wire‐insulation heat conduction model for precise thermal predictions of permanent magnet synchronous machines

Liu

Shang

et al. 2023

IET Electric Power Appl

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Accurate thermal calculations of end‐winding temperature rises are the key issue in designing and developing cooling systems of permanent magnet synchronous machines (PMSMs). Due to the complex connections of the end‐windings, it is challenging to precisely predict the heat dissipation capacities through a traditional wire‐insulation equivalent model. Numerical simulations and lumped parameter thermal networks (LPTN) are used by the authors to develop thermal models that illustrate the end‐winding properties of a 2.1‐kW PMSM. As multi‐strand end wires are bent and bound together by ribbons, they have thermal interrelations which can hardly be considered in LPTN models. An equivalent coefficient enhancing the axial heat conduction capacities of end‐windings is proposed for LPTN calculations to model the aforementioned thermal interrelations with circumferential symmetric structures. To correctly model the mutual thermal coupling between various strands of end‐windings, the thermal conductivity of the equivalent insulation sheets between the multi‐strand end‐windings is determined for exact numerical calculations. The external insulation sheet thickness is calculated based on the equivalent thermal conductivity. After developing heat conduction models for LPTN and numerical simulations, LPTN and FEA are used to determine the PMSM's temperature rise characteristics. To verify the approaches, the computation findings are contrasted with experimental ones.

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“…In such conditions, maintaining the thermal constraints without affecting the motor performance is a challenging task. Therefore, performing proper thermal analysis in the design stage of these machines is considered indispensable in such applications [131].…”

Section: Thermal Analysismentioning

confidence: 99%

An overview of thermal modelling techniques for permanent magnet machines

Khalesidoost

Faiz

Mazaheri‐Tehrani

2022

IET Science Measure & Tech

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Permanent magnet (PM) machines have gained increasing attention from the industry because of their potential merits over conventional electrical machines. High‐temperature level in electrical machines is a major factor that can adversely impact the performance and health conditions of these machines. These effects need to be minimized to make them competitive with currently operational machines in the industry. It can be done by performing a thorough thermal analysis of the prototype during the design process and proper online thermal monitoring of the machine during the operation stage. Thermal modelling is a powerful tool for achieving such goals in both cases. This paper aims to review the state‐of‐the‐art of thermal modelling techniques and provide a detailed comparison of them in PM machines. The fundamental concepts of heat transfer and sources of heat in PM machines are first discussed. Then, different thermal modelling techniques, including thermal subdomain models (TSMs), lumped parameter thermal networks (LPTNs), finite element models (FEMs), computational fluid dynamics (CFD), reduced order models (ROMs), and hybrid thermal models (HTMs) are introduced and compared. Finally, the utilization of these models in the thermal design, control, and monitoring of PM machines is studied.

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Lumped Parameter Thermal Modeling of Permanent Magnet Synchronous Motor

Cited by 13 publications

References 12 publications

A Lumped Parameter Thermal Model for Single-Sided AFPM Machines With Experimental Validation

A Lumped Parameter Thermal Model for Single-Sided AFPM Machines With Experimental Validation

End‐winding wire‐insulation heat conduction model for precise thermal predictions of permanent magnet synchronous machines

An overview of thermal modelling techniques for permanent magnet machines

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