Abstract
This article deals with a hybrid renewable energy conversion system (HRECS) interconnected to the three-phase grid in association with their power conversion components, i.e., AC/DC rectifier and DC/AC inverter. The HRECS is built around a permanent magnet synchronous wind turbine generator and a photovoltaic energy conversion system. Comparing to traditional control methods, a new multiobjective control strategy is developed to enhance system performances. This makes it possible to account in addition to optimal turbine speed regulation and PV-MPPT and three other important control objectives such as DC-link voltage regulation and the injected reactive power in the grid. To achieve these objectives, a novel control strategy is developed, based on a nonlinear model of the whole “converters-generators” association. The robustness and the stability analysis of the system have been proved using the Lyapunov theory and precisely the backstepping control and the sliding mode control. The performances of the proposed controllers are formally analyzed with respect to standard control solutions illustrated through simulation.
Highlights
Today, the use of energy is one of the clearest indicators of country development
While [24, 33, 34] propose an approach to optimize the sizing of a multisource PV/wind with hybrid energy storage system (HESS), this paper does not deal with a controller study but just an algorithm to manage energy production
The feedback controller performances will be evaluated in the presence of time-varying (Figure 11) and wind speed profile described by Figure 12
Summary
The use of energy is one of the clearest indicators of country development. The most industrialized and energyconsuming nations continue to rely on energy as a driver of growth and economic development. This simpler structure avoids the disadvantages of using a chopper (extra losses, investment, and maintenance) In this case, the input voltage at the inverter terminals is not constant but varies according to the maximum power extracted from the photovoltaic panel. While [24, 33, 34] propose an approach to optimize the sizing of a multisource PV/wind with hybrid energy storage system (HESS), this paper does not deal with a controller study but just an algorithm to manage energy production To face all these drawbacks, a novel structure, as shown, is presented. The aim is to propose a fully novel nonlinear controller applied to a hybrid energy system (HES) based on the combination of wind energy conversion (WEC) system and photovoltaic energy production system (PV) These include permanent magnet synchronous generators (PMSG) that convert wind turbine power into electrical energy.
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