![Question Bank - International Virtual University Campus](http://s1.studyres.com/store/data/019008222_1-8f16a253cc4f1d79532cd0cc2015128c-300x300.png)
High-Temperature Superconducting Wind Turbine
... ratings. Indeed, the exploitation of wind energy has been high on many governments’ and organizations’ agenda. However, for onshore wind farms the interference with neighboring residents and low wind speeds may limit the number of acceptable sites available for development. On the contrary, high win ...
... ratings. Indeed, the exploitation of wind energy has been high on many governments’ and organizations’ agenda. However, for onshore wind farms the interference with neighboring residents and low wind speeds may limit the number of acceptable sites available for development. On the contrary, high win ...
electrical drives and controls
... ELECTRICAL DRIVES AND CONTROLS 74. What is the function of conventional Kramer System? In conventional Kramer system, the slip power is converted into dc by rotary converter. The dc voltage is fed to dc motor. The dc motor is coupled with slip ring induction motor. The speed of the SRIM can be cont ...
... ELECTRICAL DRIVES AND CONTROLS 74. What is the function of conventional Kramer System? In conventional Kramer system, the slip power is converted into dc by rotary converter. The dc voltage is fed to dc motor. The dc motor is coupled with slip ring induction motor. The speed of the SRIM can be cont ...
Generator Design Using MotorSolve v6
... Common design principles for motors and generators Design of outputs is different for motors and generators Optimal generator design will be different than optimal motor design • Most software tools use the fact that motors can act as generators and address only motors • Need specialized generator d ...
... Common design principles for motors and generators Design of outputs is different for motors and generators Optimal generator design will be different than optimal motor design • Most software tools use the fact that motors can act as generators and address only motors • Need specialized generator d ...
Field Oriented Control of PM Motors
... Two motor phase currents are measured. These measurements feed the Clarke transformation module. The outputs of this projection are designated isα and isβ. These two components of the current are the inputs of the Park transformation that gives the current in the d,q rotating reference frame. The is ...
... Two motor phase currents are measured. These measurements feed the Clarke transformation module. The outputs of this projection are designated isα and isβ. These two components of the current are the inputs of the Park transformation that gives the current in the d,q rotating reference frame. The is ...
Lab 5 Document (Word)
... resistors R5 and R8. This circuit has a dc gain of 5.6 and inverts the output with respect to the input signal. The IC U4 is a non-inverting voltage comparator that acts as the pulse width modulator. The triangle wave enter the device on the inverting input and the control voltage, Vc, enters on the ...
... resistors R5 and R8. This circuit has a dc gain of 5.6 and inverts the output with respect to the input signal. The IC U4 is a non-inverting voltage comparator that acts as the pulse width modulator. The triangle wave enter the device on the inverting input and the control voltage, Vc, enters on the ...
Answer any two questions - Sahrdaya College of Engineering and
... 5. The rotor of the generator is driven by a prime-mover. At the same time a dc current is flowing in the rotor winding which produces a rotating magnetic field within the machine. This rotating magnetic field induces a three-phase voltage in the stator winding of the generator. Draw the cross secti ...
... 5. The rotor of the generator is driven by a prime-mover. At the same time a dc current is flowing in the rotor winding which produces a rotating magnetic field within the machine. This rotating magnetic field induces a three-phase voltage in the stator winding of the generator. Draw the cross secti ...
Chapter2 - Free-Energy-Info
... The core material used in the electromagnets can be of various different types including advanced materials and alloys such as ‘Somalloy’ or 'Metglas'. The power pick-up coil proportions are important as an electromagnet becomes less and less effective as its length increases, and eventually, the p ...
... The core material used in the electromagnets can be of various different types including advanced materials and alloys such as ‘Somalloy’ or 'Metglas'. The power pick-up coil proportions are important as an electromagnet becomes less and less effective as its length increases, and eventually, the p ...
Heavy-Duty Truck Sytems Chapter 09
... • The vehicle cranking circuit functions to crank the engine until it can operate under its own power. • A cranking circuit is managed by a control circuit that uses low current to switch and energize a highcurrent starter motor circuit. • A starter motor converts the electrical energy of the vehicl ...
... • The vehicle cranking circuit functions to crank the engine until it can operate under its own power. • A cranking circuit is managed by a control circuit that uses low current to switch and energize a highcurrent starter motor circuit. • A starter motor converts the electrical energy of the vehicl ...
Lecture-08
... 4. For a lap winding, number of slots may be multiple of number of poles P or number of pair of poles p (p=P/2) so that equalizer rings can used. 5. For a wave winding, number of slots should not be a multiple of number of pair of poles p and should lead to a particular number of coils that makes th ...
... 4. For a lap winding, number of slots may be multiple of number of poles P or number of pair of poles p (p=P/2) so that equalizer rings can used. 5. For a wave winding, number of slots should not be a multiple of number of pair of poles p and should lead to a particular number of coils that makes th ...
Commutator (electric)
![](https://commons.wikimedia.org/wiki/Special:FilePath/Universal_motor_commutator.jpg?width=300)
A commutator is the moving part of a rotary electrical switch in certain types of electric motors and electrical generators that periodically reverses the current direction between the rotor and the external circuit. It consists of a cylinder composed of multiple metal contact segments on the rotating armature of the machine. The commutator is one component of a motor; there are also two or more stationary electrical contacts called ""brushes"" made of a soft conductor like carbon press against the commutator, making sliding contact with successive segments of the commutator as it rotates. The windings (coils of wire) on the armature are connected to the commutator segments. Commutators are used in direct current (DC) machines: dynamos (DC generators) and many DC motors as well as universal motors. In a motor the commutator applies electric current to the windings. By reversing the current direction in the rotating windings each half turn, a steady rotating force (torque) is produced. In a generator the commutator picks off the current generated in the windings, reversing the direction of the current with each half turn, serving as a mechanical rectifier to convert the alternating current from the windings to unidirectional direct current in the external load circuit. The first direct current commutator-type machine, the dynamo, was built by Hippolyte Pixii in 1832, based on a suggestion by André-Marie Ampère. Commutators are relatively inefficient, and also require periodic maintenance such as brush replacement. Therefore, commutated machines are declining in use, being replaced by alternating current (AC) machines, and in recent years by brushless DC motors which use semiconductor switches.