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.
This paper presents operation of a Doubly Fed Induction Generator (DFIG) to extract oscillatory power from ocean wave energy converter (WEC). DFIG has the advantage of generating power at both sub-synchronous and super-synchronous speed with only slip power to be handled by power converter at rotor side. At super-synchronous speed the rotor generates slip power along with the stator to take the net...
If grid-connection impact current is very large, the power grid and dual PWM converters will be damaged. It is necessary to analyze the grid-connection transient current. In this paper based on stator rotor differential equations under the two-phase rotating coordinate system, the grid-connection transient transition process as well as the principle of impact current generation was analyzed in detail,...
We propose a new strategy for sensor fault tolerant control of rotor wound induction motors operating as stand alone generators. The strategy employs three switching mechanisms that detect faults in, respectively, rotor current sensors, stator current sensors and stator voltage sensors. Each of the switching mechanisms receives measurements from the three phases and builds three residual quantities...
This paper presents an improved predictive current control (PCC) strategy for unbalanced stand-alone doubly-fed induction generator (DFIG) based wind power systems. The proposed control scheme predicts an appropriate average rotor voltage vector to eliminate the rotor current errors in the following switching period. The identified rotor voltage vector is then applied to the rotor-side converter (RSC)...
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.