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Grid tied single-stage inverter for low-voltage PV systems with reactive power control
Published in Institution of Engineering and Technology
2018
Volume: 11
   
Issue: 11
Pages: 1 - 8
Abstract
Single-stage DC-AC converter systems (SSCSs) are developed by merging both DC-DC and DC-AC conversion processes. These SSCS transfer power from photovoltaics (PV) to loads/grid in one stage. In this study, a PV-based grid tied single-stage DC-AC converter system (GTSS) for low-voltage PV systems is presented. Generally, when SSCSs are connected to the grid, grid voltage template is used to generate reference current which is to be tracked. In doing so, the GTSS delivers power to the grid at a power factor other than unity. A suitable control scheme is implemented in this study to control active and reactive powers' flow from the GTSS to the grid while continuously operating PV at maximum power point. The proposed control scheme of GTSS has attributes such as less complexity and requires simple proportional integral controller. Modelling of control loops in the proposed control scheme is mentioned. A detailed MATLAB/SIMULINK-based simulation and experimental studies are conducted to validate the proposed control scheme. © The Institution of Engineering and Technology 2018.
About the journal
JournalIET Power Electronics
PublisherInstitution of Engineering and Technology
ISSN17554535
Open AccessNo
Concepts (17)
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    Controllers
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    Dc-dc converters
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    Electric inverters
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    Electric power transmission networks
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    MATLAB
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    Power control
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    Reactive power
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    Two term control systems
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    ACTIVE AND REACTIVE POWER
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    Control schemes
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    DC / AC CONVERTERS
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    DC-AC CONVERSIONS
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    Maximum power point
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    Proportional integral controllers
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    Reference currents
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    SINGLE-STAGE INVERTERS
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    Electric power system control