TY - GEN
T1 - Overall assessments of dual inverter open winding drives
AU - Wang, Bo
AU - Localzo, G.
AU - Murr, G. El
AU - Wang, J.
AU - Griffo, A.
AU - Gerada, C.
AU - Cox, T.
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2016/2/16
Y1 - 2016/2/16
N2 - Dual inverter open winding drive (DIOWD) has several advantages over standard 3 phase drive such as multilevel voltage output, lower dc link voltage, high efficiency and better fault tolerant capability. In this paper three DIOWD topologies aiming for high speed and/or safety critical applications are evaluated. Their operation characteristics, VA ratings, efficiencies, harmonic distortion factors (HDF) are quantitatively compared using analytical methods. The utilization of dual inverters provides fault tolerant capabilities for the drive. However, the doubled number of devices increases the risk of single-point failure. Finally, the reliability of the drives is assessed by Markov chain technique. The results show that the DIOWD with two power supplies exhibits low HDF and high efficiency; it also offers better fault tolerant capability and enhanced reliability, thereby being more attractive for both high speed and high reliability applications. While the DIOWD with single power supply and the DIOWD with a power supply and a floating capacitor can be utilized for high speed drives with reduced dc link voltage.
AB - Dual inverter open winding drive (DIOWD) has several advantages over standard 3 phase drive such as multilevel voltage output, lower dc link voltage, high efficiency and better fault tolerant capability. In this paper three DIOWD topologies aiming for high speed and/or safety critical applications are evaluated. Their operation characteristics, VA ratings, efficiencies, harmonic distortion factors (HDF) are quantitatively compared using analytical methods. The utilization of dual inverters provides fault tolerant capabilities for the drive. However, the doubled number of devices increases the risk of single-point failure. Finally, the reliability of the drives is assessed by Markov chain technique. The results show that the DIOWD with two power supplies exhibits low HDF and high efficiency; it also offers better fault tolerant capability and enhanced reliability, thereby being more attractive for both high speed and high reliability applications. While the DIOWD with single power supply and the DIOWD with a power supply and a floating capacitor can be utilized for high speed drives with reduced dc link voltage.
KW - Markov chain technique
KW - dual inverter open winding drive
KW - efficiency
KW - fault tolerant
KW - harmonic distortion factor
KW - reliability
UR - http://www.scopus.com/inward/record.url?scp=84965095788&partnerID=8YFLogxK
U2 - 10.1109/IEMDC.2015.7409188
DO - 10.1109/IEMDC.2015.7409188
M3 - Conference contribution
AN - SCOPUS:84965095788
T3 - Proceedings - 2015 IEEE International Electric Machines and Drives Conference, IEMDC 2015
SP - 1029
EP - 1035
BT - Proceedings - 2015 IEEE International Electric Machines and Drives Conference, IEMDC 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - IEEE International Electric Machines and Drives Conference, IEMDC 2015
Y2 - 11 May 2015 through 13 May 2015
ER -