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.
Finite element method is a powerful tool in analysis of electrical machines; however, the computational cost is high depending on the geometry of analyzed machine. In synchronous reluctance machines with transversally laminated rotors, the anisotropy of magnetic circuit is provided by flux barriers which can be of various shapes. Flux barriers of shape based on Zhukovski’s curves seem to provide very...
This paper is focused on multi-physics (structural and electromagnetic) analysis of synchronous reluctance machine (SynRM). Rotor's construction of SynRM is designed to provide the best electromagnetic behavior of the machine. The number and shapes of flux barriers are chosen in order to maximize the machine's saliency ratio. However, at high rotational speeds due to high stress in the bridges, the...
Finite element method (FEM) is a powerful tool in analysis of electrical machines however, the computational cost is high depending on the geometry of analyzed machine. In synchronous reluctance machines (SyRM) with transversally laminated rotors, the anisotropy of magnetic circuit is provided by flux barriers which can be of various shapes. Flux barriers of shape based on Zhukovski's curves seem...
Cost reduction of any design process is always of interest for industries. Simulation work packages tackle this problem since they can quickly provide reliable results that permit detection of critical design issues prior to the prototype phase. A trade-off is then often made between model accuracy and computation speed. In the particular case of electric machines, homogenization techniques are used...
This paper is devoted to the fast modelling of Switched Reluctance Machines (SRMs) and Synchronous Reluctance Machines (SynRMs) by Magnetic Equivalent Circuit (MEC) approach. For SRMs, a combined MEC-FE model is presented. A table of reluctance as function of flux and rotor position is obtained from a reduced FE model which contains a part of the stator and rotor pole. For SynRMs, two separate MEC...
The following paper presents possibilities for the application of selected time-frequency analysis methods in the fault detection of cage induction machines in transient states. The starting phase current of the machine was chosen as a diagnostic signal. Selected faults were eccentricities – static and dynamic. In order to increase the selectivity of the obtained signal transformations, a notch filter...
Synchronous reluctance machines become more popular nowadays. Development of power electronics allowed reluctance motors to be used in many drive applications. Due to increased interest in electric vehicles and high prices of PMs, the research on electric drives is mainly focused on reluctance machines. Lack of rotor winding lowers copper losses, simplifies power supply system and increases machine's...
Synchronous reluctance machines become of more interest nowadays due to robust construction and lack of field winding in the rotor which significantly reduces power losses. Rotor of such machine can be of two types: axially laminated (ALA) in which steel sheets are placed along the rotational axis and transversally laminated (TLA) in which steel sheets are placed perpendicularly to the shaft. Since...
This paper evaluates the performance of the Direct Torque Control (DTC) and Direct Torque Control - Space Vector Modulation (DTC-SVM) for the Synchronous Reluctance Motor (SynRM). Both methods are compared to Field Oriented Control (FOC) with respect to output torque ripple, phase current - total harmonic distortion (THD) and electromagnetic torque dynamics of the motor based on simulations in Matlab/Simulink.
High prices of permanent magnets (PM), in Permanent Magnet Synchronous Machines of current electric vehicles, pushes for the development of reluctance machines. Synchronous reluctance machine (SynRM) can be a competitive technology when compared to other machines, e.g. induction machines, since the lack of rotor winding limit the copper losses. In SynRM torque is produced due to anisotropy of the...
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.