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.
We have been developing superconducting transformer for high speed train. Its objects are reducing the weight and energy consumption. We have developed 4MVA class superconducting transformer in 2004. After that, we have improved the efficiency from 96% to 98%. We also have developed 1kW prototype lightweight refrigerator which is essential to realize superconducting transformer.
The stator temperature monitoring is one of important means that diagnose fault of stator cooling system in turbogenerators, so it is necessary to hold the relationship between cooling system fault and temperature field. Thus, on the basis of the fluid mechanics and heat transfer theory, the temperature field model of stator cooling-water in turbogenerator was built. The control equations of the stator...
To research the loss and heat of damper bars thoroughly, a 2D electromagnetic field FE model of tubular hydro-generator and a 3D temperature field FE model of the rotor are built up respectively. The factors such as rotor motion and nonlinearity of the time-varying electromagnetic field, the anisotropic heat conduction of the rotor core lamination and different heat dissipation conditions on the windward...
The temperature field of a wind generator is analyzed by finite element method. The steady-state heat transfer mathematic model is set up, and hypothetical conditions are presented, together with boundary conditions and loads are calculated according to the heat transfer theory in air-cooling condition. Dealing with the calculation results of the temperature field of the wind generator, the temperature...
Higher power density has been an important goal in the field of power generator. Using evaporative cooling system has made a great progress in making smaller and more powerful generator. As this new technique could improve the cooling effect so that the current density of windings could be set higher and smaller cubage would not bring superheating. It is a great progress, but the slots in the stator...
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.