TY - GEN
T1 - On the design of partial discharge-free low voltage electrical machines
AU - Madonna, Vincenzo
AU - Giangrande, Paolo
AU - Zhao, Weiduo
AU - Zhang, He
AU - Gerada, Chris
AU - Galea, Michael
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/5
Y1 - 2019/5
N2 - Modern electrical machines employed in transportation applications are required to provide high performance in terms of power (and torque) density. At the same time, being these applications safety-critical, a significant level of reliability and/or fault tolerance is expected. Among all the factors which can compromise motors reliability, partial discharges inception is one of the most critical, in particular for low voltage, random wound machines. In this paper, the influence of insulation design choices on the performance of a traction electric motor are analysed. The study is based on the Paschen's law for air at sea-level pressure combined with an electrostatic finite element model of the turn-to-turn insulation subsystems, built for determining the electric field. The finite element analysis findings are experimentally validated by detecting the partial discharges inception, on custom-built prototypes.
AB - Modern electrical machines employed in transportation applications are required to provide high performance in terms of power (and torque) density. At the same time, being these applications safety-critical, a significant level of reliability and/or fault tolerance is expected. Among all the factors which can compromise motors reliability, partial discharges inception is one of the most critical, in particular for low voltage, random wound machines. In this paper, the influence of insulation design choices on the performance of a traction electric motor are analysed. The study is based on the Paschen's law for air at sea-level pressure combined with an electrostatic finite element model of the turn-to-turn insulation subsystems, built for determining the electric field. The finite element analysis findings are experimentally validated by detecting the partial discharges inception, on custom-built prototypes.
KW - Automotive
KW - Electrical machines design
KW - Organic insulation
KW - Partial discharges
KW - Reliability
UR - http://www.scopus.com/inward/record.url?scp=85070945718&partnerID=8YFLogxK
U2 - 10.1109/IEMDC.2019.8785413
DO - 10.1109/IEMDC.2019.8785413
M3 - Conference contribution
AN - SCOPUS:85070945718
T3 - 2019 IEEE International Electric Machines and Drives Conference, IEMDC 2019
SP - 1837
EP - 1842
BT - 2019 IEEE International Electric Machines and Drives Conference, IEMDC 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 11th IEEE International Electric Machines and Drives Conference, IEMDC 2019
Y2 - 12 May 2019 through 15 May 2019
ER -
