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The whole world is focusing on the utilization of renewable energy sources in order to mitigate the world power crisis. Power electronics is being used in a large scale for the renewable energy conversion in a more efficient manner. It has a great impact on controlling as well as interfacing the renewable system with both the grid and standalone applications. Hence more and more emphasis is given...
Renewable Energy Systems are becoming a common choice for small communities in Canada where the cost of diesel fuel is high. In this paper, a PV/Wind hybrid system is being considered for supplying an electrical load of a Mobile office which is proposed and presented along with relevant statistics. An optimal configuration of different renewable energy system is being obtained. The optimal configuration...
The Power distribution system reliability is the Evaluation of halt probability of customers power supply over a given distribution network on power system. The Distributed Generators are like wind renewable energy systems and Modern Electric Vehicles (MEV) taken into the same Distribution System and evaluate the halt of the power supply to the customers. To make reliable power supply, estimating...
The transmission and distribution of electrical energy with direct current (dc) is a promising alternative to established alternating-current (ac) systems. Higher efficiencies, fewer lossy pulse-width modulated converters and smaller transformers reduce operation and investment costs. Moreover, dc collector grids within wind parks leads to benefits for harvesting electrical energy. In this paper,...
The power of offshore wind turbines are expected to increase to 10 MW and more in the future. This will make today's technology unsuitable due to increased nacelle weight. Therefore, this work focus on a new modular converter solution, which designed specifically to a generator results in reduced nacelle weight. Additional benefits are redundancy and modularity in the converter.
The electrical energy consumption continues to grow and more applications will be based on electricity in the next decades. We can expect that more 60 % of all energy consumption will be converted and used as electricity. It is a demand that production, distribution and use of electrical energy are done as efficient as possible. Further, emerging climate changes argues to find future solutions which...
The global electrical energy consumption is still rising and there is a demand to double the power capacity within 20 years. The production, distribution and use of energy should be as technological efficient as possible and incentives to save energy at the end-user should also be set up. Deregulation of energy has in the past lowered the investment in larger power plants, which means the need for...
Dynamic performances of a wind turbine generating system consisting of series connected wind generator/rectifiers and a current source thyristor inverter are discussed. A simulation model for the whole system including the wind turbines is presented to demonstrate the feasibility of the system for the case of two wind turbine/generators. It is shown that the tip speed ratios of the individual turbines...
This paper encompasses the study of modelling and design of WECS, using a wind turbine with known dynamic characteristics and a permanent magnet synchronous generator driven by a back to back power converter topology. The dynamic modeling allows to know the response of the turbine generator system in the whole range of operation. In this study, it is proposed a variable structure control scheme with...
In this paper a methodology of sizing optimization of the stand-alone hybrid energy systems is presented. This approach makes use of a deterministic algorithm to suggest, among a list of commercially available system devices, the optimal number and type of units ensuring that the total costs of the autonomous hybrid wind/PV/Diesel, wind/Diesel and PV/Diesel energy systems are minimized while guaranteeing...
The amount of electricity generated by wind power converters is world wide steadily growing. In many countries it has become a political and public interest to support this development. From the wind park owner side of view it is of essential interest to generate and sell as much electricity as possible. With increasing shares of wind energy in the electrical power supply, their influence on the mains...
A new interconnecting method for a cluster of wind turbine/generators is proposed, and some examples of the basic characteristics of the integrated system are shown. This method can be achieved with wind turbine generating system using a shaft generator system. A group of wind turbine-generators can be interconnected easily with the proposed method, and high reliability and electric output power with...
The integration of renewable energy sources, such as wind and solar energy, into isolated power systems, supplying remote communities, offers a number of economic and environmental advantages. Energy storage systems (ESS) can be used to offset the variability of the energy supplied by renewables. This paper presents a design methodology for configuring and sizing the various components added to a...
In the field of wind energy, electrical generator solutions have converged on a small number of technologies, for specific technical and economic reasons. This paper investigates whether a similar rationale exists within the field of oscillating water column, wave energy converters. The predicted performance of the various generator options within a typical wave regime is validated by means of a time-domain...
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