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This paper illustrates the implementation and the study of a hybrid electric power system based on a 10kW-diesel generator associated to renewable energy sources including a 10kW wind turbine, 12kW photovoltaic, and 53Ah lithium-battery. These energy production sources are interfaced to micro-grid through three-level power electronics converters where the phase-to-phase RMS voltage is 600V. The variable...
This paper presents the investigation of a self excited induction generator driven by a wind turbine and supplying an RL load. In this work, we focus to analyze a constant voltage-frequency operation mode. However, a pitch angle and an excitation capacitor control is needed to established a suitable operation mode. In order to improve robustness and to maintain at stable value the voltage and the...
There has been a keen interest on Distributed Generation (DG) due to their restricted goals of meeting local loads and improving reliability of the overall system. Microgrids (MGs) are connected to the main grid through a Point of Common Coupling which separates the former from the latter. At the time of an intentional islanding or fault at the grid level, a microgrid is able to disconnect itself...
In this paper, a design and implementation of a digital signal controller (DSC) for high frequency-based grid-tie inverter connected to wind emulator system is designed, fabricated, and tested. A 150 MHz (6.67-ns Cycle Time) Texas Instruments TMS320F28335 processor chip is used as the heart of the developed control board. DSC based board is a highly integrated, high-performance solution for demanding...
Today, it is common the use of a static power converters to adapt the available energy from a clean source to feed an electrical load. Wind energy conversion systems have become one of the principal areas of research on renewable energies. This research has permitted the development of different topologies and control strategies of power converters to be used on wind energy extraction. This paper...
Nowadays, many economic and environmental benefits derived from distributed generation (DG) enable DG to play an increasingly important role in distribution networks satisfying the expanding power demand. Doubly-fed induction generator (DFIG) based wind turbine has been widely used for DG due to its many advantages such as high efficiency, fine controllability and improved power quantity. In the situation...
The application of a doubly fed induction generator (DFIG) as a suitable generating scheme in a remote or isolated communities is presented in this paper. Remote area power supply (RAPS) system, a dummy load and its controller with energy storage system (ESS) are identified as the key components. The dummy load is used to absorb the power associated with over generation. The battery storage system...
This paper proposes the control scheme for an AC-linked hybrid wind/fuel cell/ultracapacitor alternative energy system for a stand-alone operation. Due to the intermittent nature of power obtained from the wind turbine-generator system, Hydrogen/fuelcell(H2/FC) and ultracapacitor(UC)are introduced as main storage and buffer storage respectively, to supply the demand for all operating conditions. Fuelcell,...
Self Excited squirrel cage Induction Generator (SEIG), is used widely to convert mechanical wind energy to electricity, due to their low cost, small size, no need of separate dc source and brushes. This paper proposes a new reduced order model for small wind energy system consisting of: Squirrel Cage Induction with excitation capacitors, D-Statcom, loads and mechanical parameters. Comparing with conventional...
In this paper, a distributed generation based on stand alone wind energy conversion system (WECS) using a permanent magnet synchronous generator (PMSG) is proposed with a solid state voltage and frequency (VF) controller. A high efficiency WECS is realised using a PMSG driven by a wind turbine with a gear system. The controller consists of IGBTs (insulated gate bipolar transistors) based voltage source...
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