Title :
The effect of the regenerative Undeland snubber circuit on inverter loads
Author :
Swanepoel, P.H. ; van Wyk, J.D.
Author_Institution :
Energy Lab., Rand Afrikaans Univ., Johannesburg, South Africa
Abstract :
The influence of a particular snubber circuit on voltage source inverter loads is investigated. The protective turn-on and turn-off snubber, as proposed by T.M. Undeland et al. (1984), was analyzed for the completely regenerative case to find analytical descriptions for the various transients. The asymmetrical output voltages of a three-phase inverter equipped with Undeland snubbers are calculated, and the implications it holds for motor drives are discussed. The relative importance of dead time and the influence of snubbers on output voltage distortion are treated. The results are confirmed by measurements
Keywords :
invertors; load (electric); overvoltage protection; transients; asymmetrical output voltages; inverter loads; output voltage distortion; regenerative Undeland snubber circuit; three-phase inverter; transients; voltage source inverter loads; Africa; Circuits; Laboratories; Leg; Protection; Pulse width modulation; Pulse width modulation inverters; Snubbers; Switches; Voltage;
Conference_Titel :
Industry Applications Society Annual Meeting, 1992., Conference Record of the 1992 IEEE
Conference_Location :
Houston, TX
Print_ISBN :
0-7803-0635-X
DOI :
10.1109/IAS.1992.244305
