Improve Operating Efficiency and Reduce Installed Cost
... LEDs and cooling fans, and from losses in the power components. AC drives applied to variable torque loads provide tremendous energy savings over time due to reduction in speed and horsepower required to meet part load conditions. The design of the Altivar 212 drive minimizes these internal losses t ...
... LEDs and cooling fans, and from losses in the power components. AC drives applied to variable torque loads provide tremendous energy savings over time due to reduction in speed and horsepower required to meet part load conditions. The design of the Altivar 212 drive minimizes these internal losses t ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... irrespective of varying Wind speed. First a Wind turbine emulator for a Low Power Horizontal Axis Wind turbine using DC Motor was build in Matlab /Simulink then the strategy control was achieved by using Pitch angle control technique which comprises of an Integral controller and a switch .The output ...
... irrespective of varying Wind speed. First a Wind turbine emulator for a Low Power Horizontal Axis Wind turbine using DC Motor was build in Matlab /Simulink then the strategy control was achieved by using Pitch angle control technique which comprises of an Integral controller and a switch .The output ...
Aalborg Universitet Coordination between Fault-Ride-Through Capability and Over-current Protection of
... to remain grid-connected during grid faults for a certain time so that it can directly contribute with active power to the grid. This supports the overall system stability. This is nowadays essentially required by almost all known grid codes for modern variable speed DFIG [3]. DFIGs have nowadays th ...
... to remain grid-connected during grid faults for a certain time so that it can directly contribute with active power to the grid. This supports the overall system stability. This is nowadays essentially required by almost all known grid codes for modern variable speed DFIG [3]. DFIGs have nowadays th ...
The Physics of Armature-Reaction
... of coolant-medium actually used, for those ready to pounce). Each structure carries windings that are linked by a mutual flux crossing the air-gap, and as a result a generated-emf is produced in the stator. Current in the rotor field-coils produce a rotating magnetic-field called field-flux. Current ...
... of coolant-medium actually used, for those ready to pounce). Each structure carries windings that are linked by a mutual flux crossing the air-gap, and as a result a generated-emf is produced in the stator. Current in the rotor field-coils produce a rotating magnetic-field called field-flux. Current ...
Length Calculator Using Ultrasonic Sensor and Raspberry Pi with
... output shaft of a servo does not rotate freely, but rather is made to seek a particular angular position under electronic control. They are typically rated by torque and speed. It consists of a small DC motor, potentiometer, gear system and a control circuit. The motor is attached by gears to the co ...
... output shaft of a servo does not rotate freely, but rather is made to seek a particular angular position under electronic control. They are typically rated by torque and speed. It consists of a small DC motor, potentiometer, gear system and a control circuit. The motor is attached by gears to the co ...
DC Machines
... The amount of heat released per cycle expressed in J/m3 is equal to the area in Tesla.A/m of the hysteresis loop. To reduce hysteresis losses, we select magnetic materials that have a narrow hysteresis loop, such as the grainoriented silicon steel used in the cores of alternating-current transformer ...
... The amount of heat released per cycle expressed in J/m3 is equal to the area in Tesla.A/m of the hysteresis loop. To reduce hysteresis losses, we select magnetic materials that have a narrow hysteresis loop, such as the grainoriented silicon steel used in the cores of alternating-current transformer ...
AN-4160 FTCO3V455A1 3-Phase Inverter Automotive Power Module Introduction www.fairchildsemi.com
... The module schematic is shown in Figure 3. The six power devices are arranged in a conventional bridge configuration, with the low-side switches sharing a common current monitoring shunt. Each of the six gate connections is routed out of the module through the signal terminal. Individual gate signal ...
... The module schematic is shown in Figure 3. The six power devices are arranged in a conventional bridge configuration, with the low-side switches sharing a common current monitoring shunt. Each of the six gate connections is routed out of the module through the signal terminal. Individual gate signal ...
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.