Design and Simulation of Robust Controllers for Power Electronic Converters used in New Energy Architecture for a (PVG)/ (WTG) Hybrid System

Abstract

Abstract-The use of the combination of photovoltaic energy source and the wind energy source as a hybrid configuration has become an alternative solution to produce power energy to fed industrial and domestic applications. In order to fully exploit the energy provided by both sources and ensure a very high efficiency it is necessary to oblige the hybrid power system to produce the maximum possible power. Indeed, in the applications based on renewable energy, power converters are used as an essential element that can help the global energy system to extract maximum power. This paper focuses on developing and optimising of a new architecture for hybrid photovoltaic generator (PVG) / wind turbine generator (WTG) power energy. To obtain the maximum power, two kinds of MPPT procedures have been used: the first is based on MPPT (P&O) sliding mode control (MPPTSMC) for the photovoltaic generator (PVG), and the second is a control based on MPPT current control (MPPTCC) approach and that for the wind turbine generator (WTG). In addition, the proposed hybrid power system can work very well under changes of climatic conditions, such as irradiation and wind speed. On the other hand, in order to maintain dc-link at a desired and stable value, during these variations, we have integrated a boost converter controlled by a sliding mode controller (SMC). A simulation model for the hybrid power system has been carried out using PSIM tools.

Enhancing Wind Turbine Stability and Performance: A Case Study on Speed Control and Maximum Power Point Tracking

“…A wind turbine (WT) is a device that converts wind energy into mechanical energy. The output power of a wind turbine is given by [33]: where  is the tip speed ratio,  is the pitch angle, ( , )…”

“…Different battery modeling models were proposed in [33]. In this study, linear models were used as battery models.…”

“…The battery's linear structure is depicted in Figure 12. The formula for battery terminal voltage ( batt V ) can be expressed as this [33].…”

Studying the Influence of Static Converters’ Current Harmonics on a PEM Fuel Cell using Bond Graph Modeling Technique

“…A boost converter allows increasing the output voltage supplied by the fuel cell by applying control signals to its parallel switch which is the basic component of the static converter [16]. Table 2 shows the parameters used in the developed BG model of the Boost Converter with causality assignment.…”

“…A buck converter is used to reduce the voltage supplied by the fuel cell by applying control signals to its series electronic switch [16].…”