ac synchronous generators
... generators and voltage-level shifting is less expensive using AC (via transformers) rather than DC (power electronics). Thus, terrestrially at your local power generation plant or shipboard, you will find a synchronous machine. Well, to be accurate, you will find not just a synchronous machine but a ...
... generators and voltage-level shifting is less expensive using AC (via transformers) rather than DC (power electronics). Thus, terrestrially at your local power generation plant or shipboard, you will find a synchronous machine. Well, to be accurate, you will find not just a synchronous machine but a ...
parametric study of rotor slot shape on a cage induction motor
... the rotor slots to improve the electromagnetic performance of squirrel cage induction motors without significant cost [2]. Therefore, formal methods can be adequate to modify geometric parameters of the rotor slots until the optimal performance is achieved. This work presents the results of a parame ...
... the rotor slots to improve the electromagnetic performance of squirrel cage induction motors without significant cost [2]. Therefore, formal methods can be adequate to modify geometric parameters of the rotor slots until the optimal performance is achieved. This work presents the results of a parame ...
SPH 4A - mackenziekim
... 1. From where does the word magnet originate? 2. Draw domains in a highly magnetic bar of steel. Describe the domain theory and how it is used to explain what is created when a bar magnet is broken in half. 3. Sketch the pattern of the magnetic field around: a) a bar magnet b) an electromagnet 4. Wh ...
... 1. From where does the word magnet originate? 2. Draw domains in a highly magnetic bar of steel. Describe the domain theory and how it is used to explain what is created when a bar magnet is broken in half. 3. Sketch the pattern of the magnetic field around: a) a bar magnet b) an electromagnet 4. Wh ...
Design and prototyping of electrical machines
... with increased motor speeds, better cooling technologies and new machine topologies. The power output of electric motors is proportional to torque and motor speed but contrary to an increased motor speed an increased torque leads to an increased weight. There is a project in which traction motors wi ...
... with increased motor speeds, better cooling technologies and new machine topologies. The power output of electric motors is proportional to torque and motor speed but contrary to an increased motor speed an increased torque leads to an increased weight. There is a project in which traction motors wi ...
2A. Two similar inductive coils with negligible resistance are wound
... 800W and 1000W respectively. Two voltmeters connected across each load read 100V and 200V respectively. If the current flowing through the circuit is 10A, determine (i) Applied voltage (ii) power factor of the combination. ...
... 800W and 1000W respectively. Two voltmeters connected across each load read 100V and 200V respectively. If the current flowing through the circuit is 10A, determine (i) Applied voltage (ii) power factor of the combination. ...
Document
... keeps the magnets pulling the right way. DEMO Highly controllable, most common DC motor. ...
... keeps the magnets pulling the right way. DEMO Highly controllable, most common DC motor. ...
5-Motors
... if we change the direction of the flow of electrons by reversing the battery connections. This “flips” the electric field of the electromagnet causing another repulsion and attraction between the poles of the two magnets, pushing the nail around again to complete the circle. ...
... if we change the direction of the flow of electrons by reversing the battery connections. This “flips” the electric field of the electromagnet causing another repulsion and attraction between the poles of the two magnets, pushing the nail around again to complete the circle. ...
Motors and Generators
... • A current carrying conductor in an external magnetic field experiences a force. • F=BIlsin calculates the magnitude of the force on a current carrying conductor in a magnetic field, where F = the force on the conductor (N – newtons) B = the magnetic flux density of the external field (T – tesla) ...
... • A current carrying conductor in an external magnetic field experiences a force. • F=BIlsin calculates the magnitude of the force on a current carrying conductor in a magnetic field, where F = the force on the conductor (N – newtons) B = the magnetic flux density of the external field (T – tesla) ...
Stator
... the rotor and allow it to turn. A fan, also mounted on the shaft, is used on the motor for cooling. ...
... the rotor and allow it to turn. A fan, also mounted on the shaft, is used on the motor for cooling. ...
No Slide Title - Personal Web Pages
... It is a brushless DC Motor whose rotor rotates in discrete angular increments when the stator windings are energized in the ...
... It is a brushless DC Motor whose rotor rotates in discrete angular increments when the stator windings are energized in the ...
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.