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 compensated pulsed alternator (CPA) has high energy density and high power density, and can supply repetitive pulse, which can be used as a power supply for a variety of fields including laser and electromagnetic launchers. There are two stages for the operation of the CPA: self-excitation and discharging. It needs to generate an adequate current in the exciting windings as to supply a very large...
Nowadays, characteristics analysis of doubly salient electro-magnet machine is mostly about starter or generator separately, while transient characteristics of switching from starter to generator are less studied. Process of switching from starter to generator is an important part of the whole starter/generator system. In this paper, integral MATLAB model of doubly salient electro-magnet starter/generator...
The implementation of concentrated windings in interior permanent magnet (IPM) machines has numerous advantages over distributed windings, with the disadvantage being mainly the decrease in saliency ratio. This paper presents a proposed finite element (FE) method in which the d- and q-axis inductances (Ld and Lq) of the IPM machine with fractional-slot concentrated windings can be accurately determined...
Switched reluctance motors are often running in status of two phases excited simultaneously. Mutual coupling has effects on not only the flux distribution and magnetic saturation, but also the ability of torque output. The two adjacent phases of switched reluctance motor can be excited in two modes, the long-flux-path mode and short-flux-path mode. The calculation method of mutual inductance in two-phase...
This paper describes two approaches for the computation of the mutual inductance between rotor and stator of synchronous claw-pole alternators with respect to the distinctive claw-shape. There is no direct access to measure the mutual inductance which requires an indirect determination. Due to the complex design of the rotor, the computational approaches are non-trivial. If prototypes are available,...
The authors develop the squirrel cage induction machine model for the diagnosis of defects from an approach of magnetically coupled multiple circuits. The generalized model is established on the base of mathematical recurrences. The winding function theory is used for determining the rotor resistances and the inductances in the case of n-broken bars and broken end-ring. Simulation results, in Part...
For part I see ibid., p.Z001665-Z001672. Two softwares are coupled for the parameter calculation and the differential integration of the dynamic model of the squirrel cage rotor induction machine, in part. II of this paper. From theoretical study of the induction machine by an approach of multiple coupled circuits, we worked out the necessary various blocks to simulation. The calculation of machine...
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.