Operation of fault-tolerant inverters with DC-link midpoint connection for adjustable speed drives

Titelangaben

Gleißner, Michael ; Bakran, Mark-M.:
Operation of fault-tolerant inverters with DC-link midpoint connection for adjustable speed drives.
2018
Veranstaltung: EPE 2018 : 20th European Conference on Power Electronics and Applications , 17.09.-21.09.2018 , Riga, Lettland.
(Veranstaltungsbeitrag: Kongress/Konferenz/Symposium/Tagung , Paper )

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Abstract

Some fault-tolerant three-phase inverters are based upon a reconfiguration to an inverter with only two
active phases and a DC-link midpoint connection after any semiconductor failure. Thus, the maximum
output voltage is halved and the DC-link midpoint capacitor voltage ripple depends on output frequency
and output current of the inverter. These limiting effects on the operation range of adjustable speed drives
as well as software and hardware based countermeasures are presented in this paper.