Abstract
In this paper, a comprehensive control analysis is presented, with emphasis on regulating the terminal voltage of a photovoltaic generator, interfaced with a current mode controlled buck DC-DC converter, which is, in turn terminated by a battery. The combined generator-convertor-load system possesses nonlinear behaviour, and is subject to environmental conditions, thus causing the control task complicated. Additionally, analyses of small signal equations reveal a possible unstable condition. Hence, a new method of designing a controller for worst-case scenario is presented. Additionally, results of implementing a typical linear controller (PI), which can be designed only in reference to a single nominal operation point, revealing a varied responses. Simulation and results of mathematical analysis are presented to verify the proposed method.
Original language | English |
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Pages (from-to) | 56-62 |
Number of pages | 7 |
Journal | Elektronika ir Elektrotechnika |
Volume | 25 |
Issue number | 3 |
DOIs | |
State | Published - 1 Jan 2019 |
Externally published | Yes |
Keywords
- Control design
- DC-DC power converters
- Mathematical analysis
- Photovoltaic systems
ASJC Scopus subject areas
- Electrical and Electronic Engineering