Title :
Gate control circuit and switching characteristics of a MOS controll thyristor (MCT)
Author_Institution :
North Dakota State Univ., Fargo, ND, USA
fDate :
Sept. 28 1991-Oct. 4 1991
Abstract :
The author describes a simple gate-controlled circuit for a MOS-controlled thyristor (MCT) in which the frequency, duty cycle, and pulse width are all controllable. The gate pulses generated are used to study the switching characteristics of an MCT connected in a DC chopper. Several experimental waveforms and a study of the variation of switching losses with gate pulse width are presented. It is shown that there is an increase in the switching losses with pulse width. There are also considerable oscillations both in the gate voltage and in the device voltage at higher frequencies, indicating the need for modifications in the drive circuit.<>
Keywords :
choppers (circuits); driver circuits; metal-insulator-semiconductor devices; switching; thyristor applications; DC chopper; MCT; MOS controll thyristor; drive circuit; gate pulse width; gate-controlled circuit; switching characteristics; Character generation; DC generators; Frequency; MOSFETs; Pulse circuits; Space vector pulse width modulation; Switching circuits; Switching loss; Thyristors; Voltage;
Conference_Titel :
Industry Applications Society Annual Meeting, 1991., Conference Record of the 1991 IEEE
Conference_Location :
Dearborn, MI, USA
Print_ISBN :
0-7803-0453-5
DOI :
10.1109/IAS.1991.178067
