Title :
The central-limit control and impact of cable resistance in current distribution for parallel-connected DC-DC converters
Author :
Wu, T.-F. ; Siri, K. ; Banda, J.
Author_Institution :
Dept. of Electr. Eng., Nat. Chung Cheng Univ., Chia-Yi, Taiwan
Abstract :
A current-sharing technique known as central-limit control (CLC) is presented. Different design options of the CLC are discussed. An evaluation of the CLC technique, taking into account the converter cable resistance, is performed by large signal simulations. The simulation data shows that the CLC technique produces desired current-sharing at all load conditions with minimal degradation of the voltage loop-gain, resulting in excellent output voltage regulation. Large and small signal frequency response of the current-sharing loop-gains are analyzed for different cable resistance values, and it is shown that proper converter cable resistance greatly improves the performance of the CLC and enhances the parallel-connected DC-DC converter system stability
Keywords :
current distribution; electric resistance; frequency response; power convertors; stability; voltage control; cable resistance; central-limit control; converter cable resistance; converter system stability; current distribution; current-sharing; current-sharing technique; large signal frequency response; large signal simulations; output voltage regulation; parallel-connected DC-DC converters; small signal frequency response; voltage loop-gain; Centralized control; Current distribution; DC-DC power converters; Degradation; Electric resistance; Frequency response; In vitro fertilization; Output feedback; Performance analysis; Performance evaluation; Power cables; Signal analysis; Stability analysis; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, PESC '94 Record., 25th Annual IEEE
Conference_Location :
Taipei
Print_ISBN :
0-7803-1859-5
DOI :
10.1109/PESC.1994.349662
