Results 101 to 110 of about 782,524 (251)

Research of Brushless Doubly-fed Machine with Non-salient Pole

open access: yesGong-kuang zidonghua, 2012
In view of problem that conversion efficiency of rotator flux of brushless doubly-fed machine influences on working efficiency, the paper proposed an optimal design scheme of non-salient pole rotator structure of brushless doubly-fed machine.
LI Sheng-li
doaj  

Angular position and velocity sensing apparatus Patent [PDF]

open access: yes, 1970
Describing angular position and velocity sensing ...
Veillette, L. J.
core   +1 more source

Analysis of brushless three‐phase synchronous generator without exciter

open access: yesElectrical Engineering in Japan, 1992
AbstractRecently, a demand for small‐capacity generators has been increasing as electric sources in small ships and automobiles or as portable electric sources driven by engines.It is desired that the structure of small‐capacity generators be simple and robust, and that the generators be highly reliable, easily maintained and controlled.This paper ...
Sakutaro Nonaka   +2 more
openaire   +2 more sources

Finite Element Analysis of Cogging Torque and Torque Ripple of Brushless DC Motor

open access: yesWasit Journal of Engineering Sciences
Brushless DC (BLDC) motors are used in various applications, including industrial, automotive, aerospace, and computers, due to their many benefits. Still, it has some drawbacks, like its cogging torque and torque ripple.
Estabraq Abd-Al Kareem, Amer M.Ali
doaj   +1 more source

Transfer Function Model of a Brushless Exciter

open access: yesJournal of King Saud University - Engineering Sciences, 1997
Brushless exciters are widely used in power stations to furnish the excitation current for the main alternators. These exciters are maintenance free and possess high gain and forcing margin. Transfer function models available for such exciters are somewhat complicated and deal with few variables.
openaire   +2 more sources

The design and development of a self-commutating stepper motor [PDF]

open access: yes, 1979
The system discussed adopts a well established and space proven motor, the 'stepper-motor' and shows that with simple commutation techniques it can be operated as a brushless dc motor at high ...
Dalley, K. R.
core   +1 more source

High Voltage Hybrid Generator and Conversion System for Wind Turbine Applications [PDF]

open access: yes, 2017
This paper presents the design of a high voltage hybrid generator (HG) and conversion system for wind turbine applications. The HG combines wound field (WF) and permanent magnet (PM) rotor excitations.
Beik, Omid, Schofield, Nigel
core   +1 more source

Fault-Tolerant Operation of Wound Field Synchronous Machine Using Coil Switching

open access: yesIEEE Access, 2019
This paper proposes a fault tolerant operation of a wound field synchronous machine (WFSM) under the loss of excitation (LOE) fault in the rotor field winding. A two-mode field excitation scheme is presented, where the rotor of the WFSM was modified, and
Muhammad Ayub   +3 more
doaj   +1 more source

Development of a renewable hybrid power plant with extended utilization of pumped storage unit equipment [PDF]

open access: yes, 2019
The scheme of a renewable hybrid power plant with the extended use of the installed equipment of the pumped storage unit for the conversion of the photovoltaic and wind generators direct current to the alternating one is proposed.
Chervonenko, I.   +2 more
core  

Quality of life satisfaction among converted Kelantan Chinese Muslims [PDF]

open access: yes, 2019
This article investigates the quality of life of the Kelantan Chinese Muslim community before and after conversion to Islam, focusing on their level of satisfaction in term of economic aspect.
Ab. Razak D.   +23 more
core   +1 more source

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