Title :
Design of control and protection schemes for MCT converters
Author :
Quek, Danny ; Yuvarajan, S.
Author_Institution :
Dept. of Electr. Eng., North Dakota State Univ., Fargo, ND, USA
Abstract :
The paper presents the complete control circuit of a phase-controlled rectifier using the MOS Controlled Thyristor (MCT) as the power switch. The circuit generates gate pulses for turning the MCT on and off, for a set of firing and extinction angles. It is possible to operate the converter at lagging, leading, or unity power factor. The control circuit includes a scheme for protecting the MCT against overcurrent. Experimental waveforms of the control signals as well as the load voltage and load current are shown. Frequency spectra of the load voltage and load current are also presented
Keywords :
AC-DC power convertors; MOS-controlled thyristors; overcurrent protection; power factor; protection; rectifiers; rectifying circuits; thyristor convertors; MCT converters; MOS controlled thyristor; control circuit; gate pulse generation; overcurrent; phase-controlled rectifier; power switch; protection schemes; Frequency; MOSFETs; Protection; Pulse circuits; Pulse generation; Reactive power; Rectifiers; Thyristors; Turning; Voltage control;
Conference_Titel :
Circuits and Systems, 1994., Proceedings of the 37th Midwest Symposium on
Conference_Location :
Lafayette, LA
Print_ISBN :
0-7803-2428-5
DOI :
10.1109/MWSCAS.1994.519038
