Improving Performance and Extending Lifetime of PMSMs via Advanced End-Winding Cooling

Madonna, Vincenzo; Spagnolo, Cosimo; Giangrande, Paolo; Galea, Michael

doi:10.1109/isie45063.2020.9152243

Cited by 5 publications

(2 citation statements)

References 33 publications

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“…Moreover, different geometries and cooling methods may influence the thermal performance and thus the thermal lifetime, which means the machine design can also be linked with lifetime model via thermal model (e.g., LPTN). The work in [105] comparing the two cooling method under a typical driving cycle and the result reveals a better solution in terms of lifetime.…”

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confidence: 97%

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Reliability-Oriented Design of Inverter-Fed Low-Voltage Electrical Machines: Potential Solutions

Giangrande

Madonna³

et al. 2021

Energies

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Transportation electrification has kept pushing low-voltage inverter-fed electrical machines to reach a higher power density while guaranteeing appropriate reliability levels. Methods commonly adopted to boost power density (i.e., higher current density, faster switching frequency for high speed, and higher DC link voltage) will unavoidably increase the stress to the insulation system which leads to a decrease in reliability. Thus, a trade-off is required between power density and reliability during the machine design. Currently, it is a challenging task to evaluate reliability during the design stage and the over-engineering approach is applied. To solve this problem, physics of failure (POF) is introduced and its feasibility for electrical machine (EM) design is discussed through reviewing past work on insulation investigation. Then the special focus is given to partial discharge (PD) whose occurrence means the end-of-life of low-voltage EMs. The PD-free design methodology based on understanding the physics of PD is presented to substitute the over-engineering approach. Finally, a comprehensive reliability-oriented design (ROD) approach adopting POF and PD-free design strategy is given as a potential solution for reliable and high-performance inverter-fed low-voltage EM design.

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confidence: 97%

“…For EMs under transportation application, the operating conditions (e.g., driving cycle/mission profile) matters. Several papers focus on the lifetime prediction with the real driving cycle or mission profile [49,81,84,91,94,105]. The authors in [49] present a comprehensive analysis of the thermal overload effect on machine lifetime.…”

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confidence: 99%