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Phase locked loop inverter synchronization method is the mostly used synchronization method for both single phase and three phase systems. Recent research has focused on the improvement of the performance of the phase lock loop inverter synchronization method under different grid conditions. The common phase locked loop synchronization techniques such as the Second Order Generalized Integrator based...
With the rise in global warming, requirements for more energy, distributed generation comprising of mini-hydro, solar energy, biomass, wind energy employing microturbines and fuel cells have gained significant impetus. The distributed generation, power driven by several nonconventional and renewable microsources offer great benefits such as environmental friendliness, adaptability and expandability,...
Intelligent Microgrids (MG) hold the key for optimal load and generation management. The proliferation of distributed energy resources (DERs) can provide a sustainable solution for future energy demand. Seamless integration of multiple MGs with the utility grid, would be highly impossible without higher level control and coordination. This paper presents a four-tier centralized control architecture...
This paper proposes single-phase power conditioning system which is capable of connecting a microgrid to an utility grid seamlessly through slew-rate control. The power conditioning system is composed of a single-phase phase-locked loop using an inverse Park transformation to detect the grid phase, a phase synchronizer using the slew-rate control, and isolated bidirectional inverter which transfers...
With the ever growing demand for power and development of renewable energy technologies, the concepts of distributed generation and microgrids are quickly coming to the forefront. A microgrid is an electrical power grid where the load and power generation are within close proximity. Increasingly educational institutions are trying to capitalize on the need to educate future and current professional...
Many of advanced countries shift to renewable age, to reduce fossil fuel consumptions, to moderate climate change, and most importantly to maintain energy security in future. Many of developing countries accelerate grid extensions. However, most of the lower population zone are not cost effective to apply the conventional grid architecture. They realize that the shift to renewable energy will be promising...
Integration of renewable and non-renewable energy has been developing rapidly, due to emerging smart grid technologies and growing energy demand. This paper proposes the design of converter, to synchronize the renewable energy like PV and wind with the grid. Generally, the output from the renewable energy sources is always variable in nature. This necessitates the inclusion of an interface like the...
Present power Generation Company's suffering from increasing of load demand in day by day applications. This situation enhances the implementation of renewable energy sources. Many concepts have been evolved for the efficient generation from renewable energy sources. But synchronization of the generated energy to the grid is still in efficient with the usage of complex controllers and costly power...
In this paper, a complete and comprehensive study has been explored on the design and performance analysis of grid side multi-level inverter in a high power renewable energy. The LCL-Filter and dq-PLL structure plus a multi-variable band-pass filter (FMVPB) must be used as the appropriate topologies to comply with the grid interconnection requirements. Details mathematical models and simulation using...
In general, residential solar inverters can operate in either island or grid-tied mode. In grid-tied mode, the inverter can be operated based on either voltage control or current control. In this paper, a grid-connected current controlled inverter is presented. A stationary frame nonideal proportional resonant (PR) controller, in lieu of a conventional PI based controller, is applied to the outer...
The increased trend in using the renewable energy instead of fossil fuel based generation due to its low environmental impact and to facilitate the increased consumption has led to extensive use of distributed generation. The use of power electronics with renewable energy offers wide advantages including greater controllability of generated power and fulfilling the requirements for grid connected...
This paper presents the adaptive notch filter based synchronization technique used for generation of reference currents for hysteresis current controlled three phase voltage source inverter. These three phase reference current components are then used to control the active power injected by the three phase voltage source inverter. In addition, the proposed control strategy can provide compensation...
Energy and sustainability are now on the top agenda of many governments. Smart grids have become one of the main enablers to address energy and sustainability issues. Many research centres have been set up worldwide to address various aspects of energy and sustainability. Renewable energy, distributed generation, hybrid electrical vehicles, more-electric aircraft, all-electric ships, smart grids etc...
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