Title :
Transformerless current injection in a near unity PF controlled rectifier
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ.
Abstract :
This paper highlights the concept of transformerless current injection in a 3-phase thyristor rectifier and discusses its gating signal design issue. This method is based on a set of bi-directional static switches between the dc bus and the ac supply. Correct timing of the switch gating determines the success of the injection technique. Transformerless approach makes the entire topology lightweight and efficient. A microprocessor based controller is introduced and its programming is also highlighted
Keywords :
power factor; rectifying circuits; thyristor applications; 3-phase thyristor rectifier; ac supply; bidirectional static switches; dc bus; gating signal design; microprocessor based controller; near unity PF controlled rectifier; topology lightweight; transformerless current injection; Bidirectional control; Circuits; Costs; Network topology; Power electronics; Power system harmonics; Reactive power; Rectifiers; Switches; Total harmonic distortion;
Conference_Titel :
Power Engineering Society General Meeting, 2006. IEEE
Conference_Location :
Montreal, Que.
Print_ISBN :
1-4244-0493-2
DOI :
10.1109/PES.2006.1708922
