TY - GEN
T1 - Electrical Machine Rotor Shielding for Low Cost Electrical Drive
AU - Al-Ani, M. M.J.
AU - Vakil, G.
AU - Gerada, C.
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/8/28
Y1 - 2018/8/28
N2 - Electrical machine rotor shielding has been proposed for high-speed electrical machines, i.e., ≥50krpm, where a smooth current waveform becomes difficult and costly to generate due to the required high switching frequency. The rotor shielding is used to suppress the unsynchronized low order high amplitude current harmonics and consequently reduces the induced eddy-current losses in rotor. For moderate speed machines, 10-40krpm, generally suited for automotive applications, a smooth current waveform is possible to generate, however, fast switching devices are required that increases the overall drive cost. In the paper, a feasibility study of low cost electrical drive is presented. The electrical drive consists of low cost, low switching frequency modules to generate a pulse width modulation (PWM) current waveform with a few switching pulses, and a rotor with electromagnetic shield to reduce the losses to an acceptable level. The feasibility study includes two permanent magnet machines (PMMs) with different rotors. Multi-physics results are obtained and compared to illustrate the feasibility of the proposed drive.
AB - Electrical machine rotor shielding has been proposed for high-speed electrical machines, i.e., ≥50krpm, where a smooth current waveform becomes difficult and costly to generate due to the required high switching frequency. The rotor shielding is used to suppress the unsynchronized low order high amplitude current harmonics and consequently reduces the induced eddy-current losses in rotor. For moderate speed machines, 10-40krpm, generally suited for automotive applications, a smooth current waveform is possible to generate, however, fast switching devices are required that increases the overall drive cost. In the paper, a feasibility study of low cost electrical drive is presented. The electrical drive consists of low cost, low switching frequency modules to generate a pulse width modulation (PWM) current waveform with a few switching pulses, and a rotor with electromagnetic shield to reduce the losses to an acceptable level. The feasibility study includes two permanent magnet machines (PMMs) with different rotors. Multi-physics results are obtained and compared to illustrate the feasibility of the proposed drive.
KW - SPM
KW - Shielding
KW - harmonics
KW - low cost
KW - low siwtching frequancy
KW - soild rotor
KW - surface-mounted permant magnet machine
UR - http://www.scopus.com/inward/record.url?scp=85053842940&partnerID=8YFLogxK
U2 - 10.1109/ITEC.2018.8450226
DO - 10.1109/ITEC.2018.8450226
M3 - Conference contribution
AN - SCOPUS:85053842940
SN - 9781538630488
T3 - 2018 IEEE Transportation and Electrification Conference and Expo, ITEC 2018
SP - 315
EP - 319
BT - 2018 IEEE Transportation and Electrification Conference and Expo, ITEC 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2018 IEEE Transportation and Electrification Conference and Expo, ITEC 2018
Y2 - 13 June 2018 through 15 June 2018
ER -