FW3410821085
... turbine rotor, gearbox and high-speed (1000–1500 rpm) electric generator. The rotor of a typical wind turbine rotates at the speed of 15–100 rpm (150–500 rpm for small-scale wind turbines. The use of a gearbox causes many technological problems in a wind power plant. These problems may be avoided us ...
... turbine rotor, gearbox and high-speed (1000–1500 rpm) electric generator. The rotor of a typical wind turbine rotates at the speed of 15–100 rpm (150–500 rpm for small-scale wind turbines. The use of a gearbox causes many technological problems in a wind power plant. These problems may be avoided us ...
Question Bank - International Virtual University Campus
... the turns ratio? Determine the primary & secondary voltages and currents. Ans. 1:1.58, 8.94V, 14.13V, 0.2236A, 0.1414A Qu.18. A 200KVA, 3300/240V, 50Hz single phase transformer has 80 turns on secondary winding. ...
... the turns ratio? Determine the primary & secondary voltages and currents. Ans. 1:1.58, 8.94V, 14.13V, 0.2236A, 0.1414A Qu.18. A 200KVA, 3300/240V, 50Hz single phase transformer has 80 turns on secondary winding. ...
M.Tech in Electrical 2nd semester
... General , Definitions, Drawing , Definition and Measurements of Points and Wiring, Electric Sub- station and Wiring Installation, Electric Installation in Building , Control at Commencement of Supply, Types of SB’s Capacity of Circuit Internal Wiring Estimates, Sequence to be followed in Carrying ou ...
... General , Definitions, Drawing , Definition and Measurements of Points and Wiring, Electric Sub- station and Wiring Installation, Electric Installation in Building , Control at Commencement of Supply, Types of SB’s Capacity of Circuit Internal Wiring Estimates, Sequence to be followed in Carrying ou ...
Analysis of Algorithms CS 465/665
... • Torque: rotational force that a motor can deliver at a certain distance from the shaft • Strength of magnetic field generated in loops of wire is directly proportional to amount of current flowing through them and thus the torque produced on motor’s shaft • The more current through a motor, the mo ...
... • Torque: rotational force that a motor can deliver at a certain distance from the shaft • Strength of magnetic field generated in loops of wire is directly proportional to amount of current flowing through them and thus the torque produced on motor’s shaft • The more current through a motor, the mo ...
Simulating Electromagnetic Interactions in High Power Density
... propagation, inhomogeneous material properties and material losses. The FEM works by defining a discrete mesh for the investigated setup and solving Maxwells equations for every point of the mesh. To obtain correct results, a fine discretization is required, resulting in a high number of elements to ...
... propagation, inhomogeneous material properties and material losses. The FEM works by defining a discrete mesh for the investigated setup and solving Maxwells equations for every point of the mesh. To obtain correct results, a fine discretization is required, resulting in a high number of elements to ...
“Real” Transformer
... Define ZeqP = The “equivalent impedance” with all parameters referred to the primary ...
... Define ZeqP = The “equivalent impedance” with all parameters referred to the primary ...
... is needed. The earliest on-line PD measurement methods detected the PD pulse currents by means of a high frequency current transformer at the neutral point [2,3], but today most machines around the world use 80-pF high voltage capacitors on the output bus to measure the PD [1,5]. The majority of on- ...
ELECTRONICS GLOSSARY
... guarding against large amplitude variations and enabling demodulation without knowledge of carrier phase. A raised cosine pulse shaping filter is used to reduce side band emission. The triple data rate is optional and uses 8- DPSK (8- phase differential phase shift keying). The smaller phase differe ...
... guarding against large amplitude variations and enabling demodulation without knowledge of carrier phase. A raised cosine pulse shaping filter is used to reduce side band emission. The triple data rate is optional and uses 8- DPSK (8- phase differential phase shift keying). The smaller phase differe ...
Efficiency evaluation of interior permanent magnet synchronous
... connect a rated load to the test machine shaft. This can be difficult, particularly for large vertical machines [4]. Furthermore, this method requires removal of the test machine from the set, if post-installation tests are required, leading to loss of production. Consequently, an efficiency test th ...
... connect a rated load to the test machine shaft. This can be difficult, particularly for large vertical machines [4]. Furthermore, this method requires removal of the test machine from the set, if post-installation tests are required, leading to loss of production. Consequently, an efficiency test th ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... fuse, B3=blown fuses, B4=no routine maintenance, B5=due to mechanical stress, B6=prime mover is not able to move the alternator, B7=due to insulation failure, B8=due to variation of speed, B9=rotor windings are kept open, B10=two or more coils in rotor winding are shorted with each other, B 11=coils ...
... fuse, B3=blown fuses, B4=no routine maintenance, B5=due to mechanical stress, B6=prime mover is not able to move the alternator, B7=due to insulation failure, B8=due to variation of speed, B9=rotor windings are kept open, B10=two or more coils in rotor winding are shorted with each other, B 11=coils ...
FERROMAGNETIC POWER TRANSMITTERS DOMESTIC POWER DISTRIBUTION USING WIRELESS TECHNOLOGY
... The methodology of transfer of electricity from one place to another without the use of wires is called as Wireless Electricity (Wire-less Electricity). The major principles associated with this idea are transformer action and resonant induction coupling. The design is laid out by using a primary co ...
... The methodology of transfer of electricity from one place to another without the use of wires is called as Wireless Electricity (Wire-less Electricity). The major principles associated with this idea are transformer action and resonant induction coupling. The design is laid out by using a primary co ...
IOSR Journal of Electrical and Electronics Engineering (IOSRJEEE)
... Abstract: One of the most consistent and reliable renewable energy resources among the power generations is the Wind Energy. In India, the total installed capacity of wind power generation capacity goes around 14,000 MW per year according to ministry of new and renewable energy, India and total inst ...
... Abstract: One of the most consistent and reliable renewable energy resources among the power generations is the Wind Energy. In India, the total installed capacity of wind power generation capacity goes around 14,000 MW per year according to ministry of new and renewable energy, India and total inst ...
IEEE NANO 2007 Paper
... Flip-Flop (SMNFF). In the second section, the Spin-MTJ device property, the working mode of Spin Transfer Torque writing approach and its integration with CMOS technology are presented. SMNFF circuit design and the evaluation of its characteristics in the aspect of stability, speed and surface are p ...
... Flip-Flop (SMNFF). In the second section, the Spin-MTJ device property, the working mode of Spin Transfer Torque writing approach and its integration with CMOS technology are presented. SMNFF circuit design and the evaluation of its characteristics in the aspect of stability, speed and surface are p ...
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.