Title :
A new thyristor phase-controlled voltage source converter with bidirectional power flow capability
Author :
Park, In Gyu ; Kim, Seon Ik
Author_Institution :
Dept. of Control & Instrum. Eng., Wonkwang Univ., Chonbuk, South Korea
Abstract :
A new line-commutated thyristor phase-controlled voltage source converter (VSC) with bidirectional power flow capability is proposed and studied. The proposed converter has the same structure with the PWM VSC. But, the switching devices are not forced-commutated ones but line-commutated thyristors, and it is operated not with the PWM but with the 6-pulse phase-control. As is the same with the PWM VSC, the output DC voltage can be regulated at its desired value, then the amount and direction of power flow are automatically controlled. The reactive power and harmonics are much smaller than those in the conventional thyristor phase-controlled current source converter. The proposed converter is expected to be useful for the voltage source inverter motor drive system with regenerative braking as the utility interface converter
Keywords :
PWM invertors; commutation; induction motor drives; load flow; phase control; power system harmonics; regenerative braking; thyristor convertors; 6-pulse phase-control; PWM; bidirectional power flow capability; harmonics; line-commutated thyristor; line-commutated thyristors; motor drive system; output DC voltage; reactive power; regenerative braking; thyristor phase-controlled voltage source converter; utility interface converter; voltage source inverter; Automatic voltage control; Bidirectional power flow; Load flow; Power conversion; Power system harmonics; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Reactive power; Thyristors;
Conference_Titel :
Industry Applications Conference, 1997. Thirty-Second IAS Annual Meeting, IAS '97., Conference Record of the 1997 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-4067-1
DOI :
10.1109/IAS.1997.629035
