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

Volume

2

fYear

1994

fDate

3-5 Aug 1994

Firstpage

1261

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1994., Proceedings of the 37th Midwest Symposium on

Conference_Location

Lafayette, LA

Print_ISBN

0-7803-2428-5

Type

conf

DOI

10.1109/MWSCAS.1994.519038

Filename

519038