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A single-switch cascaded high step-up voltage converter with 95% maximum efficiency for renewable energy systems.
- Source :
-
International Journal of Circuit Theory & Applications . Jul2016, Vol. 44 Issue 7, p1385-1399. 15p. - Publication Year :
- 2016
-
Abstract
- This paper proposes a novel nonisolated single-switch cascaded high step-up converter. The converter consists of coupled inductors, a clamp circuit, and cascaded capacitors to achieve high step-up voltage output. Only one switch is used in the proposed converter; the switch can reduce cost efficiently and simplify the control of the proposed converter. The converter also possesses an energy-recycle mechanism for recycling the spike energy of a leakage inductor. In addition, a clamp circuit is used to reduce voltage-stress across the switch, and a cascaded design is used to reduce voltage-stress across diodes and output capacitor. Thus, the proposed converter can select a low-voltage stress switch for reducing circuit loss and improving the efficiency of the converter. Finally, in this study, a 400-W nonisolated cascaded high step-up converter was implemented, of which the input and output voltages are 48 and 400 V, respectively. A microcontroller dsPIC30F4011 was used to control the converter and verify system effects and feasibility. The maximum efficiency of the proposed converter is 95% and the efficiency under a full load is 93%. Copyright © 2015 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00989886
- Volume :
- 44
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- International Journal of Circuit Theory & Applications
- Publication Type :
- Academic Journal
- Accession number :
- 116618756
- Full Text :
- https://doi.org/10.1002/cta.2166