A Study on the Effect of Rotor Bars of Induction Motor for Electric Vehicle

Noh, Hong-Rae; Shin, Hui-Sung; Kim, Cheol-Min; Kim, Ki-Chan

doi:10.23919/icems52562.2021.9634599

Cited by 3 publications

(1 citation statement)

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“…− Rotor bar losses: Moving to cast copper grade rotor bars has been the first step toward increasing motor efficiency to IE4 at a reasonable cost. However, working in the optimum rotor bar shape is also necessary [3], [24]. − Iron losses: The approaches to reduce the iron loss include reducing the silicon steel sheet thickness (from the conventional 50 mm thickness to 0.35 mm thickness) and using low loss, cold-rolled silicon steel.…”

Section: Meeting Ie4 and Ie5 Efficiency Standards In Curimmentioning

confidence: 99%

Induction motors with copper rotor: a new opportunity for increasing motor efficiency

Felipe

Santos

Sarduy

et al. 2023

IJECE

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<p>The copper rotor induction motor (CURIM) was recently introduced because it has lower rotor fusion losses than the aluminum rotor (ALRIM). Furthermore, with CURIM, it is easier to reach IE4 and IE5 efficiency levels. The CURIM is advantageous for compact motors, escalators, and electric vehicle applications. However, CURIMs present slip, power factor, temperature increase, and torque decrease problems that must be analyzed. This study compared the economic feasibility of using CURIM with ALRIM by applying discount techniques. A case study was carried out in a sugar company with a cyclical operation, where 5.5 kW motors will be installed in the intermediate conductors of the mill's feeders. The facility works three shifts between 3 and 6 months. The cost increase (DCI) of CURIM over ALRIM was between 1.1 and 1.5 times. With 3,600 h/year and 4,000 h/year of operation, the DCI greater than 10%, it was found that the payback is more than four years, and the net present value (NPV) grows linearly.</p>

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Section: Meeting Ie4 and Ie5 Efficiency Standards In Curimmentioning

confidence: 99%