Affiliations: [a] Korea Electrotechnology Research Institute, Changwon, Korea | [b] University of Science and Technology, Changwon, Korea | [c] Kookmin University (School of Mechanical Engineering), Seoul, Korea
Correspondence:
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Corresponding author: Do-Kwan Hong, Korea Electrotechnology Research Institute, Changwon, Korea. E-mail: dkhong@keri.re.krordkhong@ust.ac.kr.
Abstract: The ETC (Electric Turbo Charger) consists of high speed PMSM, ball or air foil bearings, impeller and controller and so on. KERI (Korea Electrotechnology Research Institute) is developing a high speed surface permanent magnet (SPM) type of synchronous motor and a PWM-driven inverter. This system operates at a power density of 3 kW at 100,000 rpm and is intended to fit the 1,600 cc diesel vehicles to reduce turbo-lag within 0.5 sec. This technology also virtually eliminates turbo lag and enables engine downsizing without compromising engine performance. The design and analysis of the PMSM for the ETC has been developed successfully considering the electric and mechanical performance using multi-physics analyses.
Keywords: Carbon fiber reinforced plastic (CFRP), iron loss, surface permanent magnet type synchronous motor (PMSM), critical speed, separation margin, turbo lag, electric turbo charger (ETC), eccentricity, forced vibration analysis, acoustic analysis
