A Hybrid Thermal Modeling Method for Traction Motors Used in Duty-Cycles

Scema, Claudio; Nategh, Shafigh; Boglietti, A.; Boscaglia, Luca; Ericsson, Daniel

doi:10.1109/iemdc.2019.8785307

Cited by 10 publications

(5 citation statements)

References 21 publications

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“…It is a typical approach in thermal analysis of electrical machines to use a combination of CFD and FEM to determine the effectiveness of the cooling systems during the design process. CFD and FEM have been utilized in [96] to study fluids in the cooling system and the end‐winding in a traction motor, respectively. A hybrid method based on the combination of LPTN, FEM, and CFD has been proposed in [116] for accurate estimation of hotspots in electrical machines.…”

Section: Thermal Modelling Techniquesmentioning

confidence: 99%

“…The polyhedral meshes are one of the best options for CFD studies because of higher quality, better user controllability, and reduction in the number of cells [38]. The frozen rotor approximation along with mesh and solver optimization have been employed in [96] instead of the typical transient sliding mesh technique to reduce the computational complexity of the CFD method. Furthermore, frozen rotor is a steady-state approach whereas sliding mesh is an unsteady approach.…”

Section: Conservation Of Energy Law or Thermodynamics First Lawmentioning

confidence: 99%

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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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Section: Thermal Modelling Techniquesmentioning

confidence: 99%

Section: Conservation Of Energy Law or Thermodynamics First Lawmentioning

confidence: 99%

An overview of thermal modelling techniques for permanent magnet machines

Khalesidoost

Faiz

Mazaheri‐Tehrani

2022

IET Science Measure & Tech

View full text Add to dashboard Cite

show abstract

“…Various research studies have investigated the modeling of the heat transfer and temperature distributions of OSV machines [8][9][10][11]. Most studies have implemented analytical methods by developing the lumped parameter thermal network (LPTN) based on various techniques, such as the generic cylinder element ( [11][12][13][14]), which was proposed first by Mellor et al in [15], or the multiple planes technique ( [16,17]).…”

Section: Introductionmentioning

confidence: 99%

Steady-State Thermal Modeling of Salient Pole Synchronous Generator

et al. 2022

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This paper presents a practical thermal model of a synchronous generator for high-power applications. This model couples the lumped parameter thermal network and coolant network together to utilize the impact of the coolant’s temperature rising over the machine. Furthermore, the advanced multi-planes technique provides a more precise and higher resolution temperature distribution of various machine sections. Therefore, the machines are divided into five planes; three belong to the active part, and two are added to model the machine’s drive and non-drive end-regions. Furthermore, the paper pays special attention to describing the challenges and providing solutions to them during the heat transfer modeling and analysis. Finally, the analytical model is verified using experimental results on a synchronous generator with a salient pole rotor and an open self-ventilation (OSV) cooling system by comparing the analytical and experimental results. As a result, good correspondence between the estimated and measurement results is achieved.

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“…However, it consists of two significant challenges and drawbacks; first, in the low‐speed operation, the cooling effect is reduced and second, the acoustic noise in high‐speed operation [4, 5]. This cooling method is implemented in different applications, for instance, railway traction motor ([6, 7]), a permanent magnet wind generator ([8, 9]), large Synchronous salient generator for marine and industrial application ([10, 11]).…”

Section: Introductionmentioning

confidence: 99%

Analytical thermal model and flow network analysis suitable for open self‐ventilated machines

Ghahfarokhi

Kallaste

Belahcen

et al. 2020

IET Electric Power Applications

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This study provides a survey on thermal and flow network analysis of open self-ventilated (OSV) machines. The improvements and new approaches proposed in the last decade are analysed in detail. The thermal analysis of OSV machines is divided into two significant steps, thermal models and flow network analysis. In the first step of this survey, the analytical thermal model approach is considered in detail. In addition, the study provides an overview of the critical parameters of an analytical thermal model and discusses different solutions to overcome the problems. In the second step, the hydraulic behaviour of OSV machines is considered by using the analytical flow network analysis and the formulation to calculate the flow network parameters is provided.

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A Hybrid Thermal Modeling Method for Traction Motors Used in Duty-Cycles

Cited by 10 publications

References 21 publications

An overview of thermal modelling techniques for permanent magnet machines

An overview of thermal modelling techniques for permanent magnet machines

Steady-State Thermal Modeling of Salient Pole Synchronous Generator

Analytical thermal model and flow network analysis suitable for open self‐ventilated machines

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