Title :
Maximising device current utilisation in inverter drives
Author :
Robinson, F.V.P.
Author_Institution :
Bath Univ., UK
Abstract :
A considerable improvement in power semiconductor device utilisation seems possible if the output current of power stages is actively limited by thermal feedback from the power converter. To illustrate the potential utilisation benefit in main switching devices, the variation in usable current with operating conditions is examined for several devices used in a constant frequency PWM VVVF inverter, and operated under conditions to keep their junction temperature constant
Keywords :
PWM invertors; PWM power convertors; control system analysis; driver circuits; electric current control; feedback; optimal control; power semiconductor switches; semiconductor device models; constant frequency PWM VVVF inverter; inverter drives; junction temperature; operating conditions; output current; power converter; power semiconductor device utilisation; power stages; switching devices; thermal feedback; usable current;
Conference_Titel :
Power Electronics and Variable-Speed Drives, 1994. Fifth International Conference on
Conference_Location :
London
DOI :
10.1049/cp:19941029
