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.
In the widely applied non-direct driven wind power generation system, a gearbox is connected between the wind turbine and the high speed doubly-fed induction generator (DFIG) so that the system could be smaller and supply power with constant voltage and constant frequency as the wind turbine speed varies. However, the multi-level mechanical gearbox is rather vulnerable and poses many difficulties...
Dual mechanical port machine (DMP) - a kind of continuous electrical variable transmission, is a very competitive alternative for vulnerable constant speed-ratio mechanical gearbox in high capacity wind power generation system. As the inner rotor is surrounded by the stator and the outer rotor, the DMP machine suffers from PM demagnetization and insulation failure under severe thermal condition. To...
In this paper, based on a dual mechanical port machine (DMPM), a novel dual power flow wind power generation system (DPF-WPGS) is proposed and analyzed. The operation principle of DPF-WPGS and the dynamic model of DMPM are introduced. The control strategies are analyzed and simulated in Matlab/Simulink. To evaluate the performance of DMPM-based WPGS, two other conventional WPGSs, namely, the direct-drive...
For smaller and more reliable dual mechanical port (DMP) machine in wind power generation system, there is a need for thermal analysis in the design stage. In this paper, the thermal analysis considering thermal contacts and the cooling system design for a DMP prototype machine are investigated. Some basic knowledge of the heat transfer used in electrical machines and the flow distribution in cooling...
A novel dual power flow wind power generation system based on electrical variable transmission (EVT) is proposed which combines the advantages of direct-driven and non-direct-driven systems. In this paper, the principles of the dual power flow wind power generation system are presented. The dynamic model and operation modes of the double layer permanent magnet outer rotor based EVT are introduced...
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.