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'n Elektroniese wisselrigter met nie-lineêre resonante fase-arms

M.Ing. / Inverters are daily used in industry, and to a large extent, as induction motor drives. Power levels of inverters vary from a few watt to several megawatt. The most common part of inverters is a phase arm or a pole, consisting of two power electronic switches and two freewheeling diodes. The hard switched phase arm is the standard in industry due to simplicity and cost. Regenerative snubbing is often used at larger power levels to reduce losses in the inverter. Some aspects of the non-linear resonant pole inverter, such as regenerative snubbing and zero voltage switching, are investigated. It is obtained by utilising a non-linear resonant tank. Low current stresses permit the optimal use of the power electronic switches. The non-linear resonant pole inverter can replace the hard switched inverter, with no restriction with respect to power levels. Experimental and analytical modelling was employed to investigate some aspects, such as controllability, losses and feasibility.
Date02 March 2015
Source SetsSouth African National ETD Portal
Detected LanguageEnglish
RightsUniversity of Johannesburg

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