Publications in Scientific Journals:
C. Zöller, M. Vogelsberger, T. Wolbank, J. Ertl:
"Impact of SiC semiconductors switching transition speed on insulation health state monitoring of traction machines";
IET Power Electronics,
2
(2016),
3;
#
- ?.
English abstract:
In modern traction propulsion applications, voltage source inverter (VSI) fed traction motors today operate very close to borderline conditions. With new emerging semiconductor technologies higher inverter switching frequencies will be possible and high inverter dv/dt rates appear, resulting in transient overvoltages at the machine which increase the stress on the insulation system and lead to insulation degradation. Thus, insulation condition monitoring is getting more and more important to ensure a safe and reliable operation of traction motors in trains & locomotives, trams etc.
The paper proposes an online insulation monitoring approach that is able to detect incipient insulation defects by evaluation of the motor transient current response on voltage pulses injected by standard inverter switching.
Keywords:
dv/dt rates appear- voltage source inverter
"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.1049/0988
Electronic version of the publication:
http://publik.tuwien.ac.at/files/publik_257162.pdf
Created from the Publication Database of the Vienna University of Technology.