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.
The variable-speed asynchronous traction motor used on electric locomotive is investigated in this paper. Based on the geometrical dimensions and the finite element method, the field circuit coupled model of a traction motor is presented; the electromagnetic field and the performance of a traction motor operating on different state are calculated. The result shows the influence of the nonlinear phenomena,...
In this paper, FE based circuit model is incorporated into systematic state space model to investigate the transformer inner behavior and characteristics of a saturated transformer type solid state fault current limiter (SSFCL). With novel design strategy for the proposed transformer, the FCL has small volume, low cost, and limits the short-circuit current substantially.
Method for 3D dynamic finite element analysis of electromagnetic problems involving movement was presented, in which the external circuits, nonlinear magnetic properties, eddy-current effects and movement are taken into account. In the method, the problem of voltage excitation problem was solved by the field-circuit directly coupled technique, and the 3D electromagnetic torque was calculated through...
A compact and efficient flywheel energy storage system is proposed in this paper. The system is assisted by integrated mechanical and magnetic bearings, the flywheel acts as the rotor of the drive system and is sandwiched between two disk type stators to save space. The combined use of active magnetic bearings, mechanical bearings and axial flux PM synchronous machine assists the rotor-flywheel to...
In order to make use of conducting polymer actuators such as PPy actuators suitable for many cutting edge applications, and more importantly to provide enhanced degrees of understanding and predictability in quantifying their performance, it is needed to establish a valid mathematical model of such actuators. With this in mind, the aim of this study is to establish and experimentally validate a lumped-parameter...
An extended finite element simulation (X-FEM) framework for cutting models is presented. Based on the existing work, a simplified approach to deal with the multiple cuts in a element is proposed. Meanwhile, the simulating method of cutting large deformation models is expressed for the application of computer graphics and virtual reality. Other related issues are also discussion, such as the mass matrix...
In this study, thirty methyl methacrylate casts were used to map the pulmonary artery of normal lambs, ranging in age from two to 100 days. The three-dimensional (3-D) computer tomography (CT) images of these casts were processed to extract the representative geometric parameters of the pulmonary artery. The growth pattern of the geometry of the normal pulmonary artery was analyzed by relating these...
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.