Title :
The automatic tracking of the converter´s frequency
Author :
Zhang, Zhijuan ; Peng, Yonglong ; Shi, Xinchun ; Hou, Liqun
Author_Institution :
Dept. of Electron. & Commun. Eng., North China Electr. Power Univ., Baoding, China
Abstract :
This paper introduces a new automatic tracking method of the converter´s frequency which uses single chip computer and CD4046, after analyzing the normal tracking of CD4046 PLL. It makes the converter work under the resonance or quasi-resonance state that the power factor is 1 or close to 1. Experiments with the novel approval show that the design is more practical and precise than other typical methods.
Keywords :
insulated gate bipolar transistors; microcomputer applications; phase locked loops; power convertors; power factor; power semiconductor switches; voltage control; CD4046 PLL; IGBT switches; automatic tracking; converter frequency; power factor; quasi-resonance state operation; resonance state operation; single chip computer; voltage control; Circuits; Feedback; Frequency conversion; Phase locked loops; Reactive power; Resonance; Resonant frequency; Tracking loops; Voltage control; Voltage-controlled oscillators;
Conference_Titel :
TENCON '02. Proceedings. 2002 IEEE Region 10 Conference on Computers, Communications, Control and Power Engineering
Print_ISBN :
0-7803-7490-8
DOI :
10.1109/TENCON.2002.1182732
