Slides
... Essential parts of stepper motor consists of a central magnetic gear/rotor surrounded by a series of stators (electromagnet). ...
... Essential parts of stepper motor consists of a central magnetic gear/rotor surrounded by a series of stators (electromagnet). ...
2011 Efficient Multiphysics Analysis of Drum Rollers Mircea Popescu INDUCTICA TECHNICAL CONFERENCE
... It is obvious that electromagnetic, thermal and mechanic aspects, all of them coupled by the electric motor model, have to be considered. The necessary complexity of the sub-models differs. While the mechanic load could be described by relatively simple equations, the electro-magnetic motor model i ...
... It is obvious that electromagnetic, thermal and mechanic aspects, all of them coupled by the electric motor model, have to be considered. The necessary complexity of the sub-models differs. While the mechanic load could be described by relatively simple equations, the electro-magnetic motor model i ...
Basics on electric motors
... of the alternating current are irrevocably tied together. The motor must turn at the exact frequency of the alternating current that drives it (modulated only by the number of magnetic poles). What are the benefits of a synchronous AC motor? One very large benefit is that you can avoid brushes, with ...
... of the alternating current are irrevocably tied together. The motor must turn at the exact frequency of the alternating current that drives it (modulated only by the number of magnetic poles). What are the benefits of a synchronous AC motor? One very large benefit is that you can avoid brushes, with ...
Electricity and Magnetism
... 1. Wrapping the wire in a coil. The greater the number of turns in the coil, the greater the increase in strength. 2. Adding a core. Iron vs. Al??? 3. Increasing the current in the coil will strengthen the ...
... 1. Wrapping the wire in a coil. The greater the number of turns in the coil, the greater the increase in strength. 2. Adding a core. Iron vs. Al??? 3. Increasing the current in the coil will strengthen the ...
Lab 3
... 4. A) Measure the stator current when the field is current is zero b) slowly increase the field supply until the stator current is ¼ of its rated value. Record the field current. C) Slowly increase the field supply until the stator current equals ½ of its rated value. Record the field current. D) Sl ...
... 4. A) Measure the stator current when the field is current is zero b) slowly increase the field supply until the stator current is ¼ of its rated value. Record the field current. C) Slowly increase the field supply until the stator current equals ½ of its rated value. Record the field current. D) Sl ...
SIMULATION OF ELECTRIC MACHINE AND
... The system is highly nonlinear due to the introduction of saturation needed to limit both the current delivered and the voltage applied to the motor. The system is in the saturation mode when the errors are large; as a consequence, the controller functions as a constant current source, that is torqu ...
... The system is highly nonlinear due to the introduction of saturation needed to limit both the current delivered and the voltage applied to the motor. The system is in the saturation mode when the errors are large; as a consequence, the controller functions as a constant current source, that is torqu ...
electrical machines two marks
... The core is constructed by sheet steel laminations assembled to provide a continuous magnetic path with minimum of air gap included. The steel used is of high silicon content sometimes heat treated to produce a high permeability and a low hysteresis loss at the usual operating flux densities. The ed ...
... The core is constructed by sheet steel laminations assembled to provide a continuous magnetic path with minimum of air gap included. The steel used is of high silicon content sometimes heat treated to produce a high permeability and a low hysteresis loss at the usual operating flux densities. The ed ...
adjustable speed drives
... Manufacturers Association (NEMA). These NEMA designs include classes A, B, C, D, and F. Even though two induction motors may have the same horsepower rating, their torque characteristics, including breakaway or starting torque, pull-up torque, maximum torque and full load torque, may be different de ...
... Manufacturers Association (NEMA). These NEMA designs include classes A, B, C, D, and F. Even though two induction motors may have the same horsepower rating, their torque characteristics, including breakaway or starting torque, pull-up torque, maximum torque and full load torque, may be different de ...
Individual Group Control (IGC) 4N1 Motor Controller
... The Individual Group Control (IGC) 4n1 Motor Controller provides individual and group control for up to four Somfy® Wired Technology (WT) motors with up to three intermediate positions per motor. Through the use of the DecoFlex Dry Contact Keypad (#1811402, required), users can access 3 preset posit ...
... The Individual Group Control (IGC) 4n1 Motor Controller provides individual and group control for up to four Somfy® Wired Technology (WT) motors with up to three intermediate positions per motor. Through the use of the DecoFlex Dry Contact Keypad (#1811402, required), users can access 3 preset posit ...
electrical engineering department syllabus of paper-i for jnvu
... Inductance & Inductance- Capacitance, Schering & Wien Bridge. Control System: Principle of Feedback System, Block Diagram, Signal Flow Graph, Time & Frequency domain Analysis, Introduction to state space representation of control system, Stability Analysis. Power System: Fuse & Circuit Breakers, Ove ...
... Inductance & Inductance- Capacitance, Schering & Wien Bridge. Control System: Principle of Feedback System, Block Diagram, Signal Flow Graph, Time & Frequency domain Analysis, Introduction to state space representation of control system, Stability Analysis. Power System: Fuse & Circuit Breakers, Ove ...
Electricity & Magnetism
... 6. Electric Generator: A device that transforms mechanical energy into electrical energy – Opposite of an electric motor. *A generator uses motion in a magnetic field to produce an electrical current *AC Generator uses slip rings attached to the ends of the armature *DC Generator uses a commutator i ...
... 6. Electric Generator: A device that transforms mechanical energy into electrical energy – Opposite of an electric motor. *A generator uses motion in a magnetic field to produce an electrical current *AC Generator uses slip rings attached to the ends of the armature *DC Generator uses a commutator i ...
HSC Physics - Motors and Generators Verbs
... Electric motors use an input voltage to produce an electric current in a coil to make the coil rotate in the external magnetic field. However, as the rotor rotates, the coils of wire are cutting lines of flux. This produces what is known as back emf between the ends of the wires. By Lenz’s Law, t ...
... Electric motors use an input voltage to produce an electric current in a coil to make the coil rotate in the external magnetic field. However, as the rotor rotates, the coils of wire are cutting lines of flux. This produces what is known as back emf between the ends of the wires. By Lenz’s Law, t ...
Dipolar Consideration
... DC insulation tests measure change to capacitance as charge crosses in one direction. ...
... DC insulation tests measure change to capacitance as charge crosses in one direction. ...
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.