Title :
An economical four-quadrant GTO converter and its application to DC drives
Author :
Khan, B.H. ; Dubey, Gopal K. ; Doradla, Seshagiri R.
Author_Institution :
Dept. of Electr. Eng., Aligarh Muslim Univ., India
fDate :
1/1/1993 12:00:00 AM
Abstract :
A four-quadrant gate turn-off (GTO) power 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 motor drive employing the proposed converter and closed-loop speed control with an inner current control loop is also presented. The controllers are designed using symmetric optimization. Experimental results with a 3 HP DC motor are given for steady-state and transient responses of the drive. A comparative study of the present four-quadrant drive and the one reported earlier is also presented
Keywords :
DC motors; closed loop systems; electric current control; electric drives; machine control; power convertors; thyristor applications; velocity control; 3 hp; DC motor drive; GTO; bridge; closed-loop speed control; current control; economics; four quadrant power convertors; machine control; reversing switches; steady-state response; symmetric optimization; thyristor applications; transient responses; Bridges; Current control; DC motors; Design optimization; Power generation economics; Steady-state; Switches; Switching converters; Thyristors; Velocity control;
Journal_Title :
Power Electronics, IEEE Transactions on
