Introduction to DC Electric Motors
... What’s inside the motor box? The parts of the motor and what they do! Motor Control How to change directions Concepts of Speed, Torque, Gear Ratio Practical considerations Noise, slippage, limits of operation: speed, torque ...
... What’s inside the motor box? The parts of the motor and what they do! Motor Control How to change directions Concepts of Speed, Torque, Gear Ratio Practical considerations Noise, slippage, limits of operation: speed, torque ...
EE 340 – Fall 2007 Homework-1 (80 points) Solve following
... A full power, the motor draws 2.5 kW at 75% power factor lag. The circuit is protected by a 15 A circuit breaker. The customer wants to connect an extra load (rated at 240 V, 1 kW, PF = 100%) to the same circuit that serves the ...
... A full power, the motor draws 2.5 kW at 75% power factor lag. The circuit is protected by a 15 A circuit breaker. The customer wants to connect an extra load (rated at 240 V, 1 kW, PF = 100%) to the same circuit that serves the ...
Document
... - Electric Motors: convert electrical energy into mechanical energy. - Electric Generators: convert mechanical energy to electric energy. • The Electric machine is composed of: - Stator - Rotor ...
... - Electric Motors: convert electrical energy into mechanical energy. - Electric Generators: convert mechanical energy to electric energy. • The Electric machine is composed of: - Stator - Rotor ...
LAB TECHNICIAN POSITION: Responsible for building and testing
... POSITION: Responsible for building and testing sample motors, conducting application testing and providing analytical evaluation. Will gather technical information, procure motor components, operate various measurement and electrical test equipment, present professional reports, and provide input re ...
... POSITION: Responsible for building and testing sample motors, conducting application testing and providing analytical evaluation. Will gather technical information, procure motor components, operate various measurement and electrical test equipment, present professional reports, and provide input re ...
PDF
... starting torque. SPIMs are typically classified acbecause the auxiliary winding has more turns than the cording to their starting technique. SINGLE-phase induction motors (SPIMs) are employed widely in the fractional power range, particularly in house-holds where a three-phase ac electrical supply i ...
... starting torque. SPIMs are typically classified acbecause the auxiliary winding has more turns than the cording to their starting technique. SINGLE-phase induction motors (SPIMs) are employed widely in the fractional power range, particularly in house-holds where a three-phase ac electrical supply i ...
Technical Teaching Equipment
... Digital outputs: Three digital outputs are used for pulses or alarms, or for combining both. RS-485 Communication port Fuses: 3x10 A Network Analyzer Display. It shows: Active, reactive and apparent power Active, reactive and apparent energies Lines and phase currents Line and phase voltages Frequen ...
... Digital outputs: Three digital outputs are used for pulses or alarms, or for combining both. RS-485 Communication port Fuses: 3x10 A Network Analyzer Display. It shows: Active, reactive and apparent power Active, reactive and apparent energies Lines and phase currents Line and phase voltages Frequen ...
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.