Improved Universal Motor Drive
... When operating in DC mode, significant improvements are obtained. The RMS and peak to peak current of the motor are smaller, reducing Iron losses and brush temperature. Operating in DC mode enables shrinking of the motor size, and increasing the motor lifetime. Furthermore, magnetic constriction of ...
... When operating in DC mode, significant improvements are obtained. The RMS and peak to peak current of the motor are smaller, reducing Iron losses and brush temperature. Operating in DC mode enables shrinking of the motor size, and increasing the motor lifetime. Furthermore, magnetic constriction of ...
- Melexis
... and any and all warranties, express, statutory, implied, or by description, including warranties of fitness for particular purpose, non-infringement and merchantability. Melexis reserves the right to change it at any time and without notice. Users should obtain the latest version of the information ...
... and any and all warranties, express, statutory, implied, or by description, including warranties of fitness for particular purpose, non-infringement and merchantability. Melexis reserves the right to change it at any time and without notice. Users should obtain the latest version of the information ...
PPT - Dept. of Electrical and Computer Engineering
... FPGA is a digital machine and all the computations it does are using digital parts. However, the FPGA is not digital in the same sense that a computer is. There is no resident operating system to tell it what to do. In addition, the hardware responds based on its physical properties and therefore is ...
... FPGA is a digital machine and all the computations it does are using digital parts. However, the FPGA is not digital in the same sense that a computer is. There is no resident operating system to tell it what to do. In addition, the hardware responds based on its physical properties and therefore is ...
Grin Ebikes Guide
... When you use a battery to power an electric bike amps flow from the battery to the hub motor via the motor controller. The larger the number of amps flowing, the more power you will be supplying to the motor. For example, a bike that has a controller limited to 35 amps (A) will climb a hill with mor ...
... When you use a battery to power an electric bike amps flow from the battery to the hub motor via the motor controller. The larger the number of amps flowing, the more power you will be supplying to the motor. For example, a bike that has a controller limited to 35 amps (A) will climb a hill with mor ...
frequency controlled ac motor drive - Allen
... where Frequency is described in cycles per second (Hz), and Speed and Slip are expressed in RPM. ...
... where Frequency is described in cycles per second (Hz), and Speed and Slip are expressed in RPM. ...
AC GENERATOR COMPONENTS
... AC generator (refer to Figure 1). The slip ring consists of a circular conducting material that is connected to the rotor windings and insulated from the shaft. Brushes ride on the slip ring as the rotor rotates. The electrical connection to the rotor is made by connections to the brushes. Slip ring ...
... AC generator (refer to Figure 1). The slip ring consists of a circular conducting material that is connected to the rotor windings and insulated from the shaft. Brushes ride on the slip ring as the rotor rotates. The electrical connection to the rotor is made by connections to the brushes. Slip ring ...
SNC1P - MsKhan
... -type of material (silver has ________________ internal resistance than copper) -cross-sectional area (the thicker the wire, the ________________ the internal resistance) -length (the longer the wire, the ________________ the internal resistance) -temperature (the higher the temperature, the _______ ...
... -type of material (silver has ________________ internal resistance than copper) -cross-sectional area (the thicker the wire, the ________________ the internal resistance) -length (the longer the wire, the ________________ the internal resistance) -temperature (the higher the temperature, the _______ ...
electromagnetism_8
... reverses but polarity of split ring remains the z Commercial dc gen. same use out of phase coils ...
... reverses but polarity of split ring remains the z Commercial dc gen. same use out of phase coils ...
IOSR Journal of Electrical and Electronics Engineering PP 09-14 www.iosrjournals.org
... the radiator tubes cool, thereby increasing the transformer's ratings. Fans should not be used constantly, but rather only when temperatures are such that extra cooling is needed. Automatic controls can be set up so that fans are turned on when the transformer's oil or winding temperature goes too h ...
... the radiator tubes cool, thereby increasing the transformer's ratings. Fans should not be used constantly, but rather only when temperatures are such that extra cooling is needed. Automatic controls can be set up so that fans are turned on when the transformer's oil or winding temperature goes too h ...
Powerframes Components Core System 60-070-230
... Basic synchronising by phase indicator lamps grouped in a triangle. Can be connected for lamps-bright or lamps-dark technique. A power switch is provided to connect the systems together. Accommodates Single or Three Phase. Safety earth connection provided. 380 – 415 V operation. ...
... Basic synchronising by phase indicator lamps grouped in a triangle. Can be connected for lamps-bright or lamps-dark technique. A power switch is provided to connect the systems together. Accommodates Single or Three Phase. Safety earth connection provided. 380 – 415 V operation. ...
ENERGY SAVINGS AND OPERATION
... the distribution of the kiln’s mechanical load over the rim gear and support bearings. The kiln shell, due to high thermal loads, tends to lose its circular shape and resembles more to an ellipse. This kind of flexing and distortion of the kiln’s shell shape greatly increases mechanical wear, especi ...
... the distribution of the kiln’s mechanical load over the rim gear and support bearings. The kiln shell, due to high thermal loads, tends to lose its circular shape and resembles more to an ellipse. This kind of flexing and distortion of the kiln’s shell shape greatly increases mechanical wear, especi ...
tender notice for laboratory equipment in electrical
... One 1 hp DC motor (separately excited) provided. Motor is mounted on a mechanical frame DC Motor can be loaded by a spring balance loading with dial indication All inputs/outputs are terminated on banana sockets for interconnection to form different experiments One optical encoder is provided for sp ...
... One 1 hp DC motor (separately excited) provided. Motor is mounted on a mechanical frame DC Motor can be loaded by a spring balance loading with dial indication All inputs/outputs are terminated on banana sockets for interconnection to form different experiments One optical encoder is provided for sp ...
It is sometimes difficult to find the polarity of an
... Ex. 11 - A generator is mounted on a bicycle to power a headlight. A small wheel on the shaft of the generator is pressed against the bike tire and turns the armature 44 times for each revolution of the tire. The tire has a radius of 0.33 m. The armature has 75 turns, each with an area of 2.6 x 10- ...
... Ex. 11 - A generator is mounted on a bicycle to power a headlight. A small wheel on the shaft of the generator is pressed against the bike tire and turns the armature 44 times for each revolution of the tire. The tire has a radius of 0.33 m. The armature has 75 turns, each with an area of 2.6 x 10- ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... The basic concept is that with a known motor and known voltage output pulses we can accurately determine rotor slip by monitoring current and phase shift. The controller can then modify the PWM "sine" wave shape, frequency or amplitude to achieve the desired result. For example the desired speed is ...
... The basic concept is that with a known motor and known voltage output pulses we can accurately determine rotor slip by monitoring current and phase shift. The controller can then modify the PWM "sine" wave shape, frequency or amplitude to achieve the desired result. For example the desired speed is ...
Motors and Generators
... Using the right hand palm rule, the direction of the force on sides ab and cd can be deduced The net result of these two forces is to produce a torque on the loop about the axis; in the diagram above, the torque is acting in an anticlockwise direction Forces on the sides bc and ad: The sides o ...
... Using the right hand palm rule, the direction of the force on sides ab and cd can be deduced The net result of these two forces is to produce a torque on the loop about the axis; in the diagram above, the torque is acting in an anticlockwise direction Forces on the sides bc and ad: The sides o ...
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.