Principles of Doubly-Fed Induction Generators (DFIG)
... also serve as a doubly-fed induction generator. In this case, mechanical power at the machine shaft is converted into electrical power supplied to the ac power network via both the stator and rotor windings. Furthermore, the machine operates like a synchronous generator whose synchronous speed (i.e. ...
... also serve as a doubly-fed induction generator. In this case, mechanical power at the machine shaft is converted into electrical power supplied to the ac power network via both the stator and rotor windings. Furthermore, the machine operates like a synchronous generator whose synchronous speed (i.e. ...
Optimal Commutation of a BLDC Motor by Utilizing the Symmetric
... a BLDC motor is energized at the incorrect commutation position. VBF and VEF are the filtered terminal voltages of the nonenergized phase at the beginning and end of the commutation period, respectively. Measured values of VBF and VEF are not symmetric not only because the ...
... a BLDC motor is energized at the incorrect commutation position. VBF and VEF are the filtered terminal voltages of the nonenergized phase at the beginning and end of the commutation period, respectively. Measured values of VBF and VEF are not symmetric not only because the ...
Cast Coil Transformers
... The transformer core is manufactured with grain-oriented magnetic steel, with high magnetic permeability, low losses, and insulated on both sides by a thin layer of organic material (carlyte). The cutting and assembly is performed at 45° angles using the step lap method to reduce losses, excitation ...
... The transformer core is manufactured with grain-oriented magnetic steel, with high magnetic permeability, low losses, and insulated on both sides by a thin layer of organic material (carlyte). The cutting and assembly is performed at 45° angles using the step lap method to reduce losses, excitation ...
The Design, Construction and Analysis of Horizontal Wind Turbine
... At low speed or start-up, the ratio of inertia transferred to the turbine, compared to the inertia of air is small. It is because conditions are not suitable for lift generation and more over, pressure effect on the profile is negligible. In fact, the only parameter for a specific blade profile, whi ...
... At low speed or start-up, the ratio of inertia transferred to the turbine, compared to the inertia of air is small. It is because conditions are not suitable for lift generation and more over, pressure effect on the profile is negligible. In fact, the only parameter for a specific blade profile, whi ...
PerfectSpeed® 16-Pin Motor Troubleshooting Manual
... Provide proper safeguards for personnel against rotating parts. All aspects of the installation must conform to the applicable requirements of the NEC (National Electrical Code), including Article 430 (Motor Circuits and Controllers), as well as all local codes. ...
... Provide proper safeguards for personnel against rotating parts. All aspects of the installation must conform to the applicable requirements of the NEC (National Electrical Code), including Article 430 (Motor Circuits and Controllers), as well as all local codes. ...
An Efficient Field-Circuit Coupling Based on a Temporary
... An Efficient Field-Circuit Coupling Based on a Temporary Linearization of FE Electrical Machine Models Enno Lange, François Henrotte, and Kay Hameyer Institute of Electrical Machines-RWTH Aachen University, D-52062 Aachen, Germany A field-circuit coupling method is presented, whose basic idea is to ...
... An Efficient Field-Circuit Coupling Based on a Temporary Linearization of FE Electrical Machine Models Enno Lange, François Henrotte, and Kay Hameyer Institute of Electrical Machines-RWTH Aachen University, D-52062 Aachen, Germany A field-circuit coupling method is presented, whose basic idea is to ...
EESD_2016_234 - EESD 2016
... needed to be design optimally in order to provide system efficiency, safety and reliability of the overall renewable energy system [9-11]. Nowadays 50% of total load is motor load and one third of this is Induction Motor (IM) load [12]. AC motor is preferred choice on account of its simplicity const ...
... needed to be design optimally in order to provide system efficiency, safety and reliability of the overall renewable energy system [9-11]. Nowadays 50% of total load is motor load and one third of this is Induction Motor (IM) load [12]. AC motor is preferred choice on account of its simplicity const ...
Article
... The system includes two DC motors with steel gearboxes. The motor is fixed in the Jaguar lite robot system chassis, the rating operation voltage for the motors is 24 V and the rated current is 7.5 A. The maximum weight which can be held by this type of DC motor is not sufficient for wheelchair real ...
... The system includes two DC motors with steel gearboxes. The motor is fixed in the Jaguar lite robot system chassis, the rating operation voltage for the motors is 24 V and the rated current is 7.5 A. The maximum weight which can be held by this type of DC motor is not sufficient for wheelchair real ...
PHY 142L Spr 2016 Lab 2
... Electric circuits can be designed to perform an incredible array of functions that we have come to rely on in daily life. From the distribution of power through transmission lines and the wiring of a household electrical system to the submicron scale circuits in computer chips, all circuits are just ...
... Electric circuits can be designed to perform an incredible array of functions that we have come to rely on in daily life. From the distribution of power through transmission lines and the wiring of a household electrical system to the submicron scale circuits in computer chips, all circuits are just ...
Induction motor
An induction or asynchronous motor is an AC electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding. An induction motor therefore does not require mechanical commutation, separate-excitation or self-excitation for all or part of the energy transferred from stator to rotor, as in universal, DC and large synchronous motors. An induction motor's rotor can be either wound type or squirrel-cage type.Three-phase squirrel-cage induction motors are widely used in industrial drives because they are rugged, reliable and economical. Single-phase induction motors are used extensively for smaller loads, such as household appliances like fans. Although traditionally used in fixed-speed service, induction motors are increasingly being used with variable-frequency drives (VFDs) in variable-speed service. VFDs offer especially important energy savings opportunities for existing and prospective induction motors in variable-torque centrifugal fan, pump and compressor load applications. Squirrel cage induction motors are very widely used in both fixed-speed and variable-frequency drive (VFD) applications. Variable voltage and variable frequency drives are also used in variable-speed service.