Constant switching frequency control-based linear-assisted DC/DC regulator for photovoltaic solar-powered facilities

Author

Martinez-Garcia, H. ; Grau-Saldes, A.

Author_Institution

Dept. of Electron. Eng., Tech. Univ. of Catalonia-BarcelonaTech, Barcelona, Spain

fYear

2015

fDate

16-18 June 2015

Firstpage

14

Lastpage

18

Abstract

This article shows the proposal of a linear-assisted converter or linear-&-switching hybrid converter with a constant switching frequency. The control loop of the system is based on the current-mode technique. The main disadvantage of a converter with current-mode control is the inherent instability of the loop when switch duty ratios are greater than 0.5. In order to make stable the proposed linear-assisted converter, the article shows the technique based on a slope compensation.

Keywords

DC-DC power convertors; frequency control; linear systems; photovoltaic power systems; switching convertors; constant switching frequency control loop; current mode control; inherent instability; linear assisted DC-DC regulator; linear hybrid converter; solar powered facilities; switching hybrid converter; Inductance; Regulators; Switches; Switching converters; Switching frequency; Voltage control; DC-DC Switching Converters; Linear-Assisted DC-DC Voltage Regulators; Voltage Linear Regulators;

fLanguage

English

Publisher

ieee

Conference_Titel

Clean Electrical Power (ICCEP), 2015 International Conference on

Conference_Location

Taormina

Type

conf

DOI

10.1109/ICCEP.2015.7177594

Filename

7177594