The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
When the wind speed is between the cut-in and the rated wind speed, the generator control aims at maximum energy capture. The third-order nonlinear model of the Permanent magnet synchronous generator (PMSG)-based wind power conversion system (WECS) is established. In order to ensure maximum energy capture under rated wind speed, firstly, the nonlinear model is linearized around different operating...
The wind power varies mainly depending on the wind speed. Many methods have been proposed to track the maximum power point (MPPT) of the wind, such as the fuzzy logic (FL), artificial neural network (ANN) and Neuro-Fuzzy. In this paper, a variable speed wind generator MPPT based on artificial neural network (ANN) is presented. It is designed as a combination of the generator speed forecasting model...
With the development of tidal current power generation technology, the research on developing of detection and control system, which is suitable for the energy conversion of tidal current generation, is becoming an important component of developing tidal current energy. The paper introduces the basic composition of tidal current power generation system, as well as the detection and control technology,...
A new self-shunt excitation control method has been brought in this paper, which is about how to use DC chopper that is composed with full controlled switch device IGBT to regulate exciting voltage. This new method replaces traditional method which is adopted controlled rectifier by thyristor. Exciting voltage refers from terminal voltage by exciting transformer, and then it goes through uncontrollable...
This paper focuses on the design and technical specifications of 25-kW PMSG wind turbine system, INER-C25A, which has been undergoing field-testing since March, 2009. Three major parts of INER-C25A including the infrastructure of control system, wind turbine control strategy, and the power conditioning system will be illustrated in this paper. With the LabVIEW (laboratory virtual instrument engineering...
This paper presents a novel control strategy for the operation of a direct drive permanent magnet synchronous generator (PMSG) based stand alone variable speed wind turbine. The control strategy for the generator side converter with maximum power extraction is discussed. The stand alone control is featured with output voltage and frequency controller capable of handling variable load. The potential...
Wind turbine systems have strong nonlinear multivariable with many uncertain factors and disturbances. Making use of the sliding mode variable structure control strategy, letting the system capability as the sliding mode function. The system of loop-speed-control and loop-position-control are designed base on the sliding mode variable structure control, which can make the system quick, steady and...
A novel control strategy for the operation of a permanent magnet synchronous generator (PMSG) based stand alone variable speed wind turbine is presented in this paper. The direct drive PMSG is connected to the load through a switch mode rectifier and a vector controlled pulse width modulated (PWM) IGBT-inverter. The generator side switch mode rectifier is controlled to achieve maximum power from the...
The aim of the present paper is to describe appropriate control systems for local generators able to correctly manage a microgrid during its transition from a grid-connected to an islanded operation, as well as during its autonomous operation. In order to study the dynamic behaviour of a microgrid including renewable energy-based generation units, control systems for both synchronous generators and...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.