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Design of an Ultra-High-Speed Permanent-Magnet Motor for an Electric Turbocharger Considering Speed Response Characteristics

Title
Design of an Ultra-High-Speed Permanent-Magnet Motor for an Electric Turbocharger Considering Speed Response Characteristics
Author
홍정표
Keywords
Power density; speed response; surface-mounted permanent-magnet synchronous motor (SPMSM); turbocharger; ultra-high-speed motor
Issue Date
2017-04
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation
IEEE-ASME TRANSACTIONS ON MECHATRONICS, v. 22, no. 2, page. 774-784
Abstract
This paper presents a design methodology and analysis for a 4-kW 150-krpm ultra-high-speed surfacemounted permanent-magnet synchronous motor (SPMSM) to electrically assist a turbocharger. The proposed design methodology is aimed at achieving a required torque and speed. In addition, this study seeks a fast-speed response as a design objective to eliminate turbo lagmore effectively. First, an existing prototype that does not meet the target performance is presented. The loss for the prototype, which is difficult to obtain theoretically, is obtained experimentally and reflected in the design. The speed response characteristic of the machine is analyzed through the electromechanical undamped natural frequency and damping ratio. Design parameters such as the permanent-magnet (PM) grade, the turn number of coils, and the axial length of the motor are designed. The resulting improved motor achieves higher power density as well as faster speed response than the prototype. Experiments verified the effectiveness of the motor in the electrically assisted turbocharger. In system experiments with the turbocharger, the rising speed of the boost pressure is improved by 44.9% due to the designed motor.
URI
https://ieeexplore.ieee.org/document/7762723https://repository.hanyang.ac.kr/handle/20.500.11754/113802
ISSN
1083-4435; 1941-014X
DOI
10.1109/TMECH.2016.2634160
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > AUTOMOTIVE ENGINEERING(미래자동차공학과) > Articles
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