Title :
An economical four-quadrant GTO converter and its application to DC drive
Author :
Khan, B. ; Dubey, G. ; Doradla, S.R.
Author_Institution :
Dept. of Electr. Eng., A.M. Univ., Aligarh, India
Abstract :
A four-quadrant converter employing a single six-GTO bridge and four thyristors as reversing switches is described. Such a four-quadrant converter is economical compared to a dual converter employing two bridges, each with six GTOs. A four-quadrant DC drive employing the proposed converter and closed-loop speed control with inner current control loop is also presented. The controllers are designed using symmetric optimization. The experimental results are given for the steady-state and transient response of the drive. A comparative study of the present four-quadrant drive and one reported earlier is also presented.<>
Keywords :
DC motors; electric current control; electric drives; power convertors; thyristor applications; velocity control; 4-quadrant GTO convertor; DC drive; closed-loop speed control; inner current control loop; steady-state response; symmetric optimization; thyristor applications; transient response; Bridge circuits; Commutation; DC motors; Power generation economics; Pulse width modulation; Switches; Switching converters; Thyristors; Velocity control; Voltage;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1990. APEC '90, Conference Proceedings 1990., Fifth Annual
Conference_Location :
Los Angeles, CA, USA
DOI :
10.1109/APEC.1990.66416
