Design of a Permanent-Magnet Synchronous Generator for a 2 MW
... interaction between the Permanent-Magnets (PMs) and the stator slots [5]. Due to the direct connection of the wind turbine and generator shaft, torque pulsation has an important concern and has direct impact on the efficient use of the wind power. Therefore less torque ripple, developed by the syste ...
... interaction between the Permanent-Magnets (PMs) and the stator slots [5]. Due to the direct connection of the wind turbine and generator shaft, torque pulsation has an important concern and has direct impact on the efficient use of the wind power. Therefore less torque ripple, developed by the syste ...
Electrical Motors and Control
... preparing for class. Lessons build upon the concepts presented in previous lessons, so attendance in both lectures and laboratories is critical. You are responsible for the material presented in class. It is expected that students will attend all meetings of class. Late arrival will count as an abse ...
... preparing for class. Lessons build upon the concepts presented in previous lessons, so attendance in both lectures and laboratories is critical. You are responsible for the material presented in class. It is expected that students will attend all meetings of class. Late arrival will count as an abse ...
Control of High Speed Permanent Magnet Synchronous Motors
... constant magnetic flux in the motor The terminal voltage must increase roughly proportional to the applied frequency V/Hz drives typically add a low frequency voltage boost to increase starting torque capability V/Hz drives typically add a steady state slip compensation which increases with fr ...
... constant magnetic flux in the motor The terminal voltage must increase roughly proportional to the applied frequency V/Hz drives typically add a low frequency voltage boost to increase starting torque capability V/Hz drives typically add a steady state slip compensation which increases with fr ...
Glossary of Motor Terms
... DC (Direct Current) A current that flows only in one direction in an electric circuit. It may be continuous or discontinuous and it may be constant or varying. DC Motor: A motor using either generated or rectified DC. power (see motor definition). A DC motor is usually used when variable speed opera ...
... DC (Direct Current) A current that flows only in one direction in an electric circuit. It may be continuous or discontinuous and it may be constant or varying. DC Motor: A motor using either generated or rectified DC. power (see motor definition). A DC motor is usually used when variable speed opera ...
Power Factor Improvement of Induction Motor by Using Capacitors
... company since if the power factor is less than one, they have to supply more current to the user for a given amount of power use. In so doing they occur more line losses. Induction motors are the most widely used electrical motors due to their reliability, low cost and robustness. For industrial and ...
... company since if the power factor is less than one, they have to supply more current to the user for a given amount of power use. In so doing they occur more line losses. Induction motors are the most widely used electrical motors due to their reliability, low cost and robustness. For industrial and ...
Protection Description
... time-delayed b tripping according to power swing (number of active power swings): v suitable for generators capable of withstanding high electrical and mechanical constraints v to be set as a number of rotations. The 2 types of operation may be used independently or at the same time. ...
... time-delayed b tripping according to power swing (number of active power swings): v suitable for generators capable of withstanding high electrical and mechanical constraints v to be set as a number of rotations. The 2 types of operation may be used independently or at the same time. ...
P1000 Mechanical Specification Submittal
... provides optimum speed control of any conventional squirrel cage induction motor. The use of IGBTs (Insulated Gate Bipolar Transistors), with a carrier frequency range of 1 kHz to 15 kHz, permits quiet motor operation. This drive has one control logic board and keypad for all horsepower ratings. Pri ...
... provides optimum speed control of any conventional squirrel cage induction motor. The use of IGBTs (Insulated Gate Bipolar Transistors), with a carrier frequency range of 1 kHz to 15 kHz, permits quiet motor operation. This drive has one control logic board and keypad for all horsepower ratings. Pri ...
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.