Title :
An investigation of switching and conduction losses in inverters under varying inductor ripple current
Author :
Wolf, M. ; du T.Mouton, H. ; van der Merwe, J.W. ; Koeslag, F.
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Stellenbosch, Stellenbosch, South Africa
Abstract :
This paper presents an accurate method of calculating the switching device losses in a half bridge DC-AC inverter. The analysis is based on an existing numerical method of calculating the inductor ripple current. The losses are calculated by replicating the exact current waveform flowing through the switching devices. This method allows for a more accurate loss calculation than the well-known existing analytical methods. The different methods are discussed and the results are compared.
Keywords :
DC-AC power convertors; numerical analysis; switching networks; conduction loss; current waveform; half-bridge DC-AC inverter; inductor ripple current; numerical method; switching device loss; Bridge circuits; Capacitors; Diodes; Inductors; Insulated gate bipolar transistors; Loss measurement; Pulse width modulation; Pulse width modulation inverters; Topology; Voltage;
Conference_Titel :
AFRICON, 2009. AFRICON '09.
Conference_Location :
Nairobi
Print_ISBN :
978-1-4244-3918-8
Electronic_ISBN :
978-1-4244-3919-5
DOI :
10.1109/AFRCON.2009.5308307
