نتایج جستجو برای: restructured shaded pole induction motor
تعداد نتایج: 374809 فیلتر نتایج به سال:
In this paper, a wind energy conversion system (WECS) is presented for the electrification of rural areas with availability. A three-phase AC-DC converter based on bridgeless Cuk used power extraction from permanent magnet synchronous generator (PMSG). The topology enables elimination front-end diode bridge rectifier (DBR). Moreover, has fewer components, simple control, and high efficiency, ma...
A scheme for a three-level voltage space phasor generation with common-mode voltage elimination is proposed. An open-end-winding induction motor, fed from both ends by two threelevel inverters, which are realised by a cascading two two-level inverter, is used in this configuration. The voltage space vectors of individual three-level inverters, which generate the same commonmode voltage in the i...
Permanent magnet synchronous motors (PMSMs) are used in many applications including the control systems due to their high efficiency, high power density, good dynamic behavior, high precision and excellent controllability. One of the PMSM problems is the cogging torque which is made by interaction between PMs and stator teeth. This leads to some noise and vibration of the motor that in control ...
Pole-phase changing induction machines (IMs) offer the capability to extend torque-speed envelope compared their fixed pole-phase counterparts. Dynamic pole-changing can achieve higher torque levels at lower speeds, utilizing pole numbers, and extended flux-weakening range with pole-number operations. This paper investigates design impact on optimum behavior respective split of operating region...
Due to low cost, evaporative coolers are used in most of the central regions and in the warm and dry climate of Iran and are considered as one of the major consumers of electrical power. Most evaporative coolers use single-phase induction motors by connecting directly to the power grid. But their eefficiency is very low, and their replacement with high efficiency electric motors is considered b...
Dynein is a critical mitotic motor whose inhibition causes defects in spindle pole organization and separation, chromosome congression or segregation, and anaphase spindle elongation, but results differ in different systems. We evaluated the functions of the dynein-dynactin complex by using RNA interference (RNAi)-mediated depletion of distinct subunits in Drosophila S2 cells. We observed a str...
The article substantiates the expediency of using a controlled electric motor in grinding mechanisms drives instead an unregulated asynchronous motor. problem facilitating start-up ball mills and ensuring accurate stop neck lowest speed is considered. As review literature showed, control two-speed motors simple, cheap reliable option. In many existing motors, two independent windings are placed...
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