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.
This paper describes the causes of cogging torque in Permanent Magnet synchronous Motor. Establishes a motor model by ANSOFT software, uses Finite Element Method to quantitative analysis and comparative peak cogging torque and torque with notches at different locations, and different number of auxiliary slot. The conclusion is that notch reasonable can reduce the cogging torque of permanent magnet...
This paper deals with issues created by the cogging torque exhibited in permanent magnet synchronous motors in a motor drive with field oriented control. Experimental results are shown for both the start-up procedure and the steady-state operation of the used motor. The static and cogging torque are also measured at low speed to optimize the parameters of the start-up algorithm.
Torque ripples due to cogging torque, current measurement errors and non-sinusoidal flux distribution restrict application of PMSM in direct drive system. In this paper, a method based on PI type iterative learning control (ILC) is presented to suppress the ripple. Tuning method of the controller is given in detail, which ensures stability and convergence of the system. Effect of controller parameters...
This paper presents the design concepts and the test results of an electro-mechanical actuator for high-performance pump application. The rotating permanent magnet synchronous motor is integrated with the mechanical component in a rotating-screw architecture in order to minimize the total inertia. The motion trajectory fits the classical profile with high-torque at low-speed and low-torque at high...
PM motor drive systems are widely used for industrial drives. However, PM motors basically produce the torque ripple due to the fluctuation of the magnetic field distribution. Dead time of the inverter, offset of sensors and current measurement errors lead to the torque ripple, too. The torque ripple leads vibration noises. In this paper, we proposed a torque ripple suppression method based on perfect...
The improvements of the new structure of permanent magnet synchronous motors (PMSM) with the low cogging torque for the ceiling fan is presented. The new type motor is designed by using the phase-shift, half-thickness interior permanent-magnet embedded in oblique slot of rotor is implemented to yield less torque fluctuation and cogging torque. The energy also can be saved at least 50% when the new...
Many methods have been published for minimizing pulsating torque using programmed reference current waveforms (PRCW), however there are still several problems with their implementation. One major problem is the need to determine motor and controller parameters very accurately. The task of parameter determination is a considerable challenge as any measurement usually involves a number of conversions...
Torque pulsation reduction of permanent magnet synchronous motor (PMSM) is an important design issue. One component of this pulsation is cogging torque, which depends on magnetic configuration of stator and rotor (e.g., magnets and slots shape and dimensions). This paper presents a new physical and mathematical analysis of cogging torque for surface mount PM (SFPM) motor. Based on the analysis, a...
In these days, the choice of the right motor topology for industrial applications and household electrical appliances is a challenging quest. Since universal motors can not meet the ever-growing standards of electrical equipment design, new generations of electric machines compete to conquer this market. For industrial applications and home appliances, PMSMs seem to be the most fitted solution, especially...
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.