Sim, Kyuho Koo, Bonjin Kim, Chang Ho Kim, Tae Ho 2024-01-20T13:02:53Z 2024-01-20T13:02:53Z 2021-09-01 2013-02 0306-2619 https://pubs.kist.re.kr/handle/201004/128415 This paper presents the development of a micro-power pack using automotive alternators powered by a micro-gas turbine (MGT) to recharge battery packs, in particular for electric vehicles (EVs). The thermodynamic efficiency for the MGT with the power turbine is estimated from a simple Brayton cycle analysis. The rotordynamic and power generation performance of the MGT driven alternator was measured during a series of experiments under electrical no-loading and loading conditions, and with belt-pulley and flexible bellows couplings. The flexible coupling showed superior rotordynamic and power generation performance than the belt coupling due to the enhanced alignment of the alternator rotor and the reduced mechanical frictions. Furthermore, the micro-power pack showed dramatic increases in the mass and volumetric power densities by similar to 4 times and similar to 5 times, respectively, compared with those of a commercial diesel generator with similar power level. As a result, this paper assures the feasibility of the light-weight micro-power pack using a MGT and automotive alternators for EVs. (c) 2012 Elsevier Ltd. All rights reserved. English ELSEVIER SCI LTD Development and performance measurement of micro-power pack using micro-gas turbine driven automotive alternators Article 10.1016/j.apenergy.2012.07.014 1 APPLIED ENERGY, v.102, pp.309 - 319 APPLIED ENERGY 102 309 319 scie scopus 000314190800036 2-s2.0-84870750085 Energy & Fuels Engineering, Chemical Energy & Fuels Engineering Article Micro-power pack Micro-gas turbine Rotordynamic performance Power generation Electric vehicle