Validation by measurements of a windage losses model for very-high-speed machines

Burnand, Guillaume; Araujo, Douglas Martins; Koechli, Christian; Perriard, Yves

doi:10.1109/icems.2017.8056273

Cited by 16 publications

(10 citation statements)

References 6 publications

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“…It is done using either finite-element analysis or experimental testing. For the latter this will also include mechanical losses 𝑃 𝑚𝑒𝑐ℎ such as friction and windage losses [16], [17]. The total loss 𝑃 𝑙𝑜𝑠𝑠 = 𝑃 𝑐𝑢 + 𝑃 𝑓𝑒 + 𝑃 𝑚𝑒𝑐ℎ is used to find the efficiency ( ) by (1).…”

Section: B Synchronous Machine Equivalent Circuit Modelsmentioning

confidence: 99%

Efficiency Maps of Electrical Machines: A Tutorial Review

Roshandel

Mahmoudi

Kahourzade

et al. 2023

IEEE Trans. on Ind. Applicat.

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The IEEE Publication Services & Products Board (PSPB) last revised its Operations Manual Section 8.1.9 on Electronic Information Dissemination (known familiarly as "author posting policy") on 7 December 2012.PSPB accepted the recommendations of an ad hoc committee, which reviewed the policy that had previously been revised in November 2010. The highlights of the current policy are as follows:• The policy reaffirms the principle that authors are free to post their own version of their IEEE periodical or conference articles on their personal Web sites, those of their employers, or their funding agencies for the purpose of meeting public availability requirements prescribed by their funding agencies. Authors may post their version of an article as accepted for publication in an IEEE periodical or conference proceedings. Posting of the final PDF, as published by IEEE Xplore®, continues to be prohibited, except for open-access journal articles supported by payment of an article processing charge (APC), whose authors may freely post the final version.• The policy provides that IEEE periodicals will make available to each author a preprint version of that person's article that includes the Digital Object Identifier, IEEE's copyright notice, and a notice showing the article has been accepted for publication. • The policy states that authors are allowed to post versions of their articles on approved third-party servers that are operated by not-for-profit organizations. Because IEEE policy provides that authors are free to follow public access mandates of government funding agencies, IEEE authors may follow requirements to deposit their accepted manuscripts in those government repositories.

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Section: B Synchronous Machine Equivalent Circuit Modelsmentioning

confidence: 99%

Efficiency Maps of Electrical Machines: A Tutorial Review

Roshandel

Mahmoudi

Kahourzade

et al. 2023

IEEE Trans. on Ind. Applicat.

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“…Typically, slotless windings are used in small-size and very-high-speed electrical machines [72,73]. Unlike traditional windings, slotless windings can be easily arranged in the machine airgap.…”

Section: Slotless Pcb Windings and Modular Electrical Machinesmentioning

confidence: 99%

Electrical Machines Winding Technology: Latest Advancements for Transportation Electrification

2022

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The ever-increasing demand for higher-power dense electrical machines has resulted in different electrical, mechanical, and thermal stresses, which can eventually cause machine failure. For this reason, the management of stresses and losses must be thoughtfully investigated to have a highly reliable electrical machine. The literature agrees that winding losses are the dominant loss mechanism in many electrical machines. However, statements vary on how to mitigate these losses along with the aforementioned stresses. To avoid winding failure, a study of the various winding topologies would allow for a better consideration of the challenges and limitations in the performance of different electrical machines. To this aim, this paper introduces a comprehensive review for different winding topologies. Many reported cases in the literature are summarized and compared. Moreover, the utilization of additive manufacturing (AM) in the production of the machine windings is presented, showing a high level of maturity of this emerging technology. Finally, different challenges facing the design of machine windings are introduced including the AC high frequency losses, thermal management, mechanical and acoustic problems, insulation aging, automated production, and winding manufacturability.

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“…In addition to the electrical and magnetic losses mentioned in previous sections, the mechanical losses including windage [140], friction [37] (mechanical losses [64]), and stray losses [74] are other sources of the power dissipation in the efficiency studies of the electrical machines. The friction and windage losses value depend on the mechanical speed, shaft radius, shaft length, and the environment in which machine works in [140]. According to the Mack's equation shown in (7), the mechanical loss which is the summation of the friction and windage losses is related to the cube of the operating speed.…”

Section: Mechanical Lossesmentioning

confidence: 99%

Losses in Efficiency Maps of Electric Vehicles: An Overview

et al. 2021

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In some applications such as electric vehicles, electric motors should operate in a wide torque and speed ranges. An efficiency map is the contour plot of the maximum efficiency of an electric machine in torque-speed plane. It is used to provide an overview on the performance of an electric machine when operates in different operating points. The electric machine losses in different torque and speed operating points play a prominent role in the efficiency of the machines. In this paper, an overview about the change of various loss components in torque-speed envelope of the electric machines is rendered to show the role and significance of each loss component in a wide range of torque and speeds. The research gaps and future research subjects based on the conducted review are reported. The role and possibility of the utilization of the computational intelligence-based modeling of the losses in improvement of the loss estimation is discussed.

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Validation by measurements of a windage losses model for very-high-speed machines

Cited by 16 publications

References 6 publications

Efficiency Maps of Electrical Machines: A Tutorial Review

Efficiency Maps of Electrical Machines: A Tutorial Review

Electrical Machines Winding Technology: Latest Advancements for Transportation Electrification

Losses in Efficiency Maps of Electric Vehicles: An Overview

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