Experimental Investigation on Oil Spray Cooling With Hairpin Windings

Liu, Chuan; Xu, Zeyuan; Gerada, David; Li, Jing; Gerada, Chris; Chong, Yew Chuan; Popescu, Mircea; Goss, James; Staton, D.A.; Zhang, He

doi:10.1109/tie.2019.2942563

Cited by 112 publications

(46 citation statements)

References 23 publications

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“…Equation 13can then be used in (11) to determine the mean volumetric flux on the end-winding. The cover angle β can be calculated by [28]:…”

Section: Establishing the Reduced-parameter Modelsmentioning

confidence: 99%

“…Both these nozzles are full-cone pressure-swirl nozzles, but they have different spray angles, flow-rate capacities, and atomization capabilities. Details regarding the nozzles can be found in [28]. It should be noted that the proposed method does not apply to nozzles that cannot produce a full-cone spray, since these nozzles do not cover evenly the impingement surface, rendering the calculation of the mean volumetric flux meaningless.…”

Section: Experimental Validationmentioning

confidence: 99%

“…A bypass line is located after the highpressure pump to adjust the flow rate of the oil. The coolant used in this study is a synthetic lubricant, and its properties have been reported in [28]. All sensor and thermocouple readings are recorded by a data logger every 10 seconds, and the HTC is calculated based on (22).…”

Section: A Determination Of the Reduced-parameter Models 1) Design Omentioning

confidence: 99%

“…The setup can provide oil spray onto the end region of the stator while measuring necessary parameters to determine the HTC of the spray cooling. Further details of the setup have been reported in [28]. Both nozzles considered in this research are tested with the axial-spray configuration with up to 12 nozzles, as shown in Fig.…”

Section: B Validation Of the Reduced-parameter Modelsmentioning

confidence: 99%

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Estimation of Oil Spray Cooling Heat Transfer Coefficients on Hairpin Windings With Reduced-Parameter Models

Liu

Gerada

et al. 2021

IEEE Trans. Transp. Electrific.

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“…Equation 13can then be used in (11) to determine the mean volumetric flux on the end-winding. The cover angle β can be calculated by [28]:…”

Section: Establishing the Reduced-parameter Modelsmentioning

confidence: 99%

Section: Experimental Validationmentioning

confidence: 99%

Section: A Determination Of the Reduced-parameter Models 1) Design Omentioning

confidence: 99%

Section: B Validation Of the Reduced-parameter Modelsmentioning

confidence: 99%

See 2 more Smart Citations

Estimation of Oil Spray Cooling Heat Transfer Coefficients on Hairpin Windings With Reduced-Parameter Models

Liu

Gerada

et al. 2021

IEEE Trans. Transp. Electrific.

Self Cite

View full text Add to dashboard Cite

“…3) Improved heat transfer properties using insulation materials with ultra-high thermal conductivity [191] to reduce hot spots. 4) High-temperature solutions (needed for PMMs) with improved heat management of end-windings [192]. 5) High-voltage technology for high altitudes in aerospace applications (beyond 3 kV) [42], [193].…”

Section: ) Needed Developments For Machines and Pecsmentioning

confidence: 99%

High-Power Machines and Starter-Generator Topologies for More Electric Aircraft: A Technology Outlook

et al. 2020

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More electric aircraft (MEA) architectures consist of several subsystems, which must all comply with the settled safety requirements of aerospace applications. Thus, achieving reliability and fault-tolerance represents the main cornerstone when classifying different solutions. Hybrid electric aircraft (HEA) extends the MEA concept by electrifying the propulsive power as well as the auxiliary power, and thereby pushing the limits of electrification. This paper gives an overview of the high-power electrical machine families and their associated power electronic converter (PEC) interfaces that are currently competing for aircraft power conversion systems. Various functionalities and starter-generator (S/G) solutions are also covered. In order to highlight the latest advancements, the efficiency of the world's most powerful aerospace generator (Mark 1) developed within the E-Fan X HEA project is graphically represented and assessed against other rivaling solutions. Motivated by the strict requirements on efficiency, power density, trustworthiness, as well as starting functionalities, supplementary considerations on the system-level design are paramount. In order to highlight the MEA goals and take advantage of all potential benefits, all subsystems must be treated as a whole. It is then shown that the combination of PECs, aircraft grid and electrical machines can be better adapted to benefit the overall system. This survey outlines the influence of these concerns and offers a view of the future technology outlook, as well as covering the present challenges and opportunities.

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Investigation on performance of battery thermal management system using spray cooling

Fan

Wang

Xie

et al. 2022

Intl J of Energy Research

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The thermal management system has essential effects on the performance, life, and consistency of lithium-ion batteries. Compared with commonly used cooling methods, spray cooling has excellent performance and is now widely used in electronic equipment, metal processing, laser surgery, and other fields.However, there are few applications of spray cooling in the battery thermal management systems (BTMSs). With the increase of the charge and discharge speed and people's rising attention to the thermal runaway accidents of electric

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Experimental Investigation on Oil Spray Cooling With Hairpin Windings

Cited by 112 publications

References 23 publications

Estimation of Oil Spray Cooling Heat Transfer Coefficients on Hairpin Windings With Reduced-Parameter Models

Estimation of Oil Spray Cooling Heat Transfer Coefficients on Hairpin Windings With Reduced-Parameter Models

High-Power Machines and Starter-Generator Topologies for More Electric Aircraft: A Technology Outlook

Investigation on performance of battery thermal management system using spray cooling

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