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 single-phase line-start synchronous reluctance motor (LSSynRM) is suitable for household appliances, but an optimized design of rotor, crucially influences the performance of motor, is hard to obtain. This paper optimizes the rotor design of LSSynRM to make a higher saliency ratio with the trade-off between saliency ratio and synchronizing ability. The mechanical-field-circuit coupled Finite element...
A novel two-speed line-start permanent magnet motor (TSLSPMM) is proposed to replace the traditional pole-changing two-speed induction motor for energy saving. The proposed TSLSPMM, featured with pole-changing stator winding and a squirrel cage rotor with fixed permanent magnet poles, starts by a winding connection with higher pole number, and runs as an induction motor for a period of time, and after...
The canned solid-rotor induction motors with squirrel-cage (CSRIMSC) are widely used in petroleum, chemical and pharmaceutical fields. The equivalent circuit of the conventional induction motor is not suitable for CSRIMSC due to the special structure. In this paper, an analytical method of performance calculation for CSRIMSC is proposed. The effects of solid rotor and cans are considered. Besides,...
Interior permanent magnet (IPM) brushless machines are widely used in various applications due to the advantages of high efficiency, high power density and wide constant power operating range and so on. However, the conventional vector control based on Park transformation with digital PI current controller can only serve for the control of fundamental current. This paper proposes a novel vector control...
High-speed precision machining is one of the important development directions of modern machining technology, high-speed spindle system is widely used in high-speed machining, and motorized spindle is the main choice of the high-speed machine tool spindle. The electromagnetic force caused by rotor unbalance is one of main vibration sources of motorized spindle. Firstly, the research on the frequency...
Totally enclosed water-cooled permanent magnet machines (TEWCPMMs) have been widely applied in electric vehicles (EVs) due to its advantages of high torque density, high power factor and strong overloading capacity. However, the TEWCPMM is often experienced with extremely high ambient temperature in very limited space, which may lead to serious machine faults. In order to investigate thermal performance...
It is demonstrated that a vernier machine and a magnetic gear work under a same principle, and the vernier machine teeth perform the flux modulation function, same as the ferromagnetic pieces do in a magnetic gear. A vernier machine is equal to a system consisting of a magnetic gear and a normal machine. Moreover, this paper presents how to convert a magnetic gear machine system to a vernier machine,...
An improved pole arc combination method to minimize the cogging torque in the interior permanent magnet brushless dc motor with flux-concentration type rotor is presented. Due to the magnetic saturation and relative complex structure, the cogging torque in interior permanent magnet brushless machines is more complicated than that in the surface permanent magnet brushless machines. Pole arc combination...
This paper presents the initial rotor position estimation and the sensorless control for IPM synchronous motor. In sensorless drive, it is important to know the exact information of the initial rotor position. The initial position estimation method is based on the peak current changed according to the rotor position owing to the saliency. A speed sensorless control based on an instantaneous reactive...
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.