Title :
Failures-tolerance and remedial strategies of a PWM multicell inverter
Author :
Richardeau, F. ; Baudesson, Ph. ; Meynard, T.
Author_Institution :
ENSEEIHT, Toulouse, France
Abstract :
The aim of this paper is to explain the specific short-circuit tolerance of an IGBT multicell inverter when a commutation failure occurs. IGBT stresses are described and calculated. The design and the lab-test of a sensor able to perform monitoring and failure diagnosis are also presented. The real-time diagnosis allows either a safe stop or a remedial control strategy based on the reconfiguration of the PWM modulator. Fail-safe operation may be gained for high power applications
Keywords :
DC-AC power convertors; PWM invertors; bipolar transistor switches; electric sensing devices; fault diagnosis; fault tolerance; insulated gate bipolar transistors; monitoring; power bipolar transistors; power semiconductor switches; short-circuit currents; switching circuits; IGBT multicell inverter; IGBT stresses; PWM modulator reconfiguration; PWM multicell inverter; commutation failure; failure diagnosis sensor; fault tolerance; high power applications; monitoring sensor; remedial control strategy; remedial strategies; safe stop; short-circuit tolerance; Capacitors; Insulated gate bipolar transistors; Leg; Pulse width modulation; Pulse width modulation inverters; Shape control; Switches; Switching frequency; Topology; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 2000. PESC 00. 2000 IEEE 31st Annual
Conference_Location :
Galway
Print_ISBN :
0-7803-5692-6
DOI :
10.1109/PESC.2000.879894
