Improvement of current total harmonic distortion level
... content. The simulations are performed using MATLAB/Simulink and are compared with experimental results. It is found that the current total harmonic distortion level of system can be decreased using such line reactors. Keywords: PWM voltage source inverter, Current total harmonic distortion, line re ...
... content. The simulations are performed using MATLAB/Simulink and are compared with experimental results. It is found that the current total harmonic distortion level of system can be decreased using such line reactors. Keywords: PWM voltage source inverter, Current total harmonic distortion, line re ...
University of Pune FACULTY OF ENGINEERING T.E. Electrical
... ratings and applications of Brushless d.c. motors, Stepper motors (only permanent and variable reluctance type), Permanent Magnet motor and linear induction motors. Unit 05: A.C. series motor (08 hrs) Operation of d.c. series motor on a.c. supply, nature of torque developed, problems associated wit ...
... ratings and applications of Brushless d.c. motors, Stepper motors (only permanent and variable reluctance type), Permanent Magnet motor and linear induction motors. Unit 05: A.C. series motor (08 hrs) Operation of d.c. series motor on a.c. supply, nature of torque developed, problems associated wit ...
Industrial Power System Design in a Utility Environment
... The second type consists of 2,400-Vac, 1,000 hp, four- of economics. For a utility, downtime is simply loss of revpole, three-phase, squirrel-cage induction motors serving enue from the sale of electricity. For the industrial user, reciprocating compressors. Synchronous machines were downtime result ...
... The second type consists of 2,400-Vac, 1,000 hp, four- of economics. For a utility, downtime is simply loss of revpole, three-phase, squirrel-cage induction motors serving enue from the sale of electricity. For the industrial user, reciprocating compressors. Synchronous machines were downtime result ...
Motor Mastery University - Century Electric Motors
... The continuing movement of the coil past the north and south poles of the magnet at high speed produces an electric current that changes its direction, or alternates twice during each revolution of the generator shaft. Therefore, this type of current is called “alternating current” or AC. The path ...
... The continuing movement of the coil past the north and south poles of the magnet at high speed produces an electric current that changes its direction, or alternates twice during each revolution of the generator shaft. Therefore, this type of current is called “alternating current” or AC. The path ...
and 2 - Faculty of Engineering
... than the primary voltage by 10, and therefore the transformer is called a step-down transformer. The purpose of this experiment is to study the behavior and circuit model of single-phase transformer as reflected by its internal parameters Running a transformer at no-load, yields a very small voltage ...
... than the primary voltage by 10, and therefore the transformer is called a step-down transformer. The purpose of this experiment is to study the behavior and circuit model of single-phase transformer as reflected by its internal parameters Running a transformer at no-load, yields a very small voltage ...
17524 Sample Question Paper Scheme – G
... a) Draw a neat sketch of stroboscope and describe the working to measure speed of induction motor. b) “A plain single phase A. C. Motor is not self-staring.” State with reason if the statement is true or false. c) Draw a circuit diagram to show the connections where Zener Diode is used as voltage re ...
... a) Draw a neat sketch of stroboscope and describe the working to measure speed of induction motor. b) “A plain single phase A. C. Motor is not self-staring.” State with reason if the statement is true or false. c) Draw a circuit diagram to show the connections where Zener Diode is used as voltage re ...
uniblock ubsf
... The brushless excitation of the motor/generator is provided by an exciter and mounted on the same shaft. The unique UNIBLOCK technology therefore offers low maintenance and high efficiency which results in significantly lower life-cycle cost. ...
... The brushless excitation of the motor/generator is provided by an exciter and mounted on the same shaft. The unique UNIBLOCK technology therefore offers low maintenance and high efficiency which results in significantly lower life-cycle cost. ...
Controlling the Speed of the Motor
... implement. Simply use the analogWrite statement to send a digital output pin a value between 0 and 255 (8 bits) and the Atmega converts this to a series of high-frequency pulses with duty cycle between 0 and 100%. Powering the Motor The LED circuits that we made last week required very low current. ...
... implement. Simply use the analogWrite statement to send a digital output pin a value between 0 and 255 (8 bits) and the Atmega converts this to a series of high-frequency pulses with duty cycle between 0 and 100%. Powering the Motor The LED circuits that we made last week required very low current. ...
Efficiency Optimization of a 100-W, 500 000-rpm
... applications. These include drilling micron sized holes, a single handheld drilling tool for dentists, electric-assisted turbochargers for car engines, portable power generation units based on gas turbines and flywheel energy storage systems. Each of these applications and the main emerging applicat ...
... applications. These include drilling micron sized holes, a single handheld drilling tool for dentists, electric-assisted turbochargers for car engines, portable power generation units based on gas turbines and flywheel energy storage systems. Each of these applications and the main emerging applicat ...
modelling of doubly fed induction generator
... energy capacity soared by a fifth to 238GW at the end of 2011. India is the 5th largest player globally, accounted for 16 GW. Wind energy is an important form of renewable energy as there is no greenhouse gas emission compared to non-renewable fossil fuels. There has been a rising demand for wind en ...
... energy capacity soared by a fifth to 238GW at the end of 2011. India is the 5th largest player globally, accounted for 16 GW. Wind energy is an important form of renewable energy as there is no greenhouse gas emission compared to non-renewable fossil fuels. There has been a rising demand for wind en ...
IE2514631473
... Induction generators produce electrical power when their shaft is rotated faster than the synchronous frequency of the equivalent induction motor. Induction generators are often used in wind turbines and some micro hydro installations due to their ability to produce useful power at varying rotor spe ...
... Induction generators produce electrical power when their shaft is rotated faster than the synchronous frequency of the equivalent induction motor. Induction generators are often used in wind turbines and some micro hydro installations due to their ability to produce useful power at varying rotor spe ...
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.