Experimentally Determined Thermal Parameters of an Energy Conversion Device Using a Constraint Least Square Parameter Estimation Method Coupled with an Analytical Thermal Model

Hey, Jonathan; Malloy, Adam C.; Martinez-Botas, Ricardo; Lampérth, Michael

doi:10.1615/ihtc15.ecs.008552

Cited by 6 publications

(9 citation statements)

References 9 publications

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“…This is especially useful for the calculation of losses in the rotor and the stator, as well as for quantifying important phenomena such as saturation, proximity and skin effects [14] etc. Heat transfer and computational fluid dynamic (CFD) models are also constructed to predict the temperature of machine components [15,16].…”

Section: D Fe Modellingmentioning

confidence: 99%

Assessment of Axial Flux Motor Technology for Hybrid Powertrain Integration

Lampérth¹,

Malloy²,

Młot³

et al. 2015

WEVJ

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Axial flux (AF) motors and generators have been used in niche automotive applications for many years. Given their disk like shape they offer distinct advantages for integration into hybrid powertrains where available length is limited. An overview of axial machine topologies is given and the design and performance laws that govern the sizing of axial flux permanent magnet machines are presented. Based on the analytical laws described it is shown that an axial machine can achieve significantly more torque than a size comparable radial machine. 3D finite element analysis is used to fine-tune designs and to investigate loss mechanisms. A P2 hybrid module case study is used to show the benefits and challenges of the axial topology when compared to the radial one. The cooling system of the machine is presented in order to show how the integration of coolant passages could be achieved. The possibility of introducing heat barriers into a hybrid powertrain, decoupling the hybrid module from the rest of the powertrain, is also presented. The predicted performance of the machine is presented and compared to the initial test results.

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Section: D Fe Modellingmentioning

confidence: 99%

Assessment of Axial Flux Motor Technology for Hybrid Powertrain Integration

Lampérth¹,

Malloy²,

Młot³

et al. 2015

WEVJ

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“…The dimension of T IJ is equal to q which is the number of distinct connections between any two points in a network of m points. There exists a matrix N 2 R mÂq that transforms T IJ into the data matrix u b ðnÞ [13].…”

Section: Parameter Estimationmentioning

confidence: 99%

“…They are appended onto the original data and response matrices in the manner shown in (13) such that the original error term (e) is redefined to include the constraints as such…”

Section: Parameter Estimationmentioning

confidence: 99%

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Conjugate heat transfer analysis of an energy conversion device with an updated numerical model obtained through inverse identification

Hey

Malloy²,

Martinez-Botas

et al. 2015

Energy Conversion and Management

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“…(II) Whilst the kA11 terms in the thermal conductance matrix can be defined from material properties and component geometries the hA terms known as thermal interface conductances are complex functions of surface roughness, interface pressure, and surface hardness [15]. In this work they have been determined empirically from a 'DC heating test' as described in [16] and [17]. Once the measured temperatures from the test have been obtained they are compared with the model's predicted temperatures obtained under the same conditions.…”

Section: B Electrical Modelmentioning

confidence: 99%

Axial flux machines for hybrid module applications

Malloy¹,

Młot²,

Cordner³

et al. 2014

2014 IEEE International Electric Vehicle Conference (IEVC)

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Hybrid modules have been adopted by vehicle manufacturers to create hybrid variants of existing models. This paper presents the potential performance of an axial flux permanent magnet machine against typical hybrid module design requirements. A multi physics analytical model is implemented and validated experimentally. This is followed by a parametric design study showing that the axial flux topology provides its maximum specific torques and powers within the available package space. Based on the hybrid module design requirements a design is identified for further development and its performance is confirmed through 3D finite element analysis. It is found that in a package space of 300mm diameter and 90mm length (including casings and water jacket) the axial flux topology offers 390Nm and 98kW for lOs, and 159Nm and 66kW continuously. Future work will include full mechanical design and prototyping of the concept.

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Experimentally Determined Thermal Parameters of an Energy Conversion Device Using a Constraint Least Square Parameter Estimation Method Coupled with an Analytical Thermal Model

Cited by 6 publications

References 9 publications

Assessment of Axial Flux Motor Technology for Hybrid Powertrain Integration

Assessment of Axial Flux Motor Technology for Hybrid Powertrain Integration

Conjugate heat transfer analysis of an energy conversion device with an updated numerical model obtained through inverse identification

Axial flux machines for hybrid module applications

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