Traditional Double-fed Wind Generation systems are based on the vector control method, and it dependents on motor parameters. The performance of the control system will be affected with the parameters changing. This paper proposes a new control method based on inverse system and variable structure sliding mode (VSS) theories, through the inverse system theory, the structure of its state’s equat...

One of the greatest challenges associated with wind power is the unpredictable character of the wind. Wind energy is one of the lowest-priced renewable energy technologies available today, costing between 4 and 6 cents per kilowatt-hour, depending upon the wind resource and project financing of the particular project. In our research, a design and modeling technique has been proposed to optimiz...

Results from experiments on a tap transformer based grid connection system for a variable speed vertical axis wind turbine are presented. The tap transformer based system topology consists of a passive diode rectifier, DC-link, IGBT inverter, LCL-filter, and tap transformer. Full range variable speed operation is enabled by using the different step-up ratios of a tap transformer. Simulations us...

Flywheels are typically used as storage elements in isolated wind plants, especially those running at almost constant speed, connected to synchronous generators and diesel engines. Nowadays, systems with variable speed are under development, so the amount of available energy in the flywheel is highly increased. In this paper a comparison between an almost constant speed system and variable spee...

This paper represents mitigation scheme of wind farm output power fluctuation in micro-grid system during grid and islanded mode. The impact of mitigation technique using sodium sulphur battery energy storage system is investigated during grid and islanded mode of micro-grid system. A micro-grid system with wind farm and photovoltaic system is used for the investigation of the mitigation of win...

The wind energy conversion system (WECS) differs from other power systems. It is clean and pollution free. But the output of wind power plant is fluctuated in nature. It depends on the wind speed. The nature of wind is variable. The variable wind generates fluctuated power. Fluctuated output is the major problem of wind power plant. This problem can be solved by using convertor units. The secon...

In recent years, wind energy has become one of the most important and promising sources of renewable energy. As a result, wind energy demands additional transmission capacity and better means of maintaining system reliability. The evolution of technology related to the wind system industry has led to the development of a generation of variable speed wind turbines that present numerous advantage...

This work presents a Comparative study of closed and open loop control system using UPF control strategy for standalone variable speed wind turbine permanent magnet synchronous generator employing space vector modulation voltage source converter. The mechanical energy required to drive the generator is obtained from variable speed wind turbine. Three phase PMSG is excited from three phase VSC. ...

This work proposes a novel control scheme for a variable speed wind turbine system based on the permanent magnet synchronous generator. Regions II and III for a wind speed profile are considered, hence the control is designed for maximizing the generated power from the wind turbine when the wind speed is below the nominal wind speed, and to saturate the generated power when the wind speed is ab...