IOSR Journal of Electronics and Communication Engineering (IOSRJECE)
... of producing electrical energy from mechanical energy is done by generators such as alternator or dynamo, some electric motors can used as generators.An induction motor is an asynchronous AC motor where power is transferred to the rotor by electromagnetic induction, much like transformer action. At ...
... of producing electrical energy from mechanical energy is done by generators such as alternator or dynamo, some electric motors can used as generators.An induction motor is an asynchronous AC motor where power is transferred to the rotor by electromagnetic induction, much like transformer action. At ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... The rated flux linkages up to a speed where the ration between the induced emf and stator frequency, known as voltage/Hz, with neglected the stator impedance, can be maintained constantan rated value. After the stator frequency, known as the base frequency, the volts/Hz ratio, and hence the stator f ...
... The rated flux linkages up to a speed where the ration between the induced emf and stator frequency, known as voltage/Hz, with neglected the stator impedance, can be maintained constantan rated value. After the stator frequency, known as the base frequency, the volts/Hz ratio, and hence the stator f ...
Study of Light Electric Vehicles Propulsion Solutions by Means of
... wire is accomplished function of the magnetic field's distribution H and the machine's geometrical dimensions. With regards to the imposed flux density in the air-gap of the machine, the magnetic field Hg can be computed function of the air permeability µ0. A mean flux density can be considered for ...
... wire is accomplished function of the magnetic field's distribution H and the machine's geometrical dimensions. With regards to the imposed flux density in the air-gap of the machine, the magnetic field Hg can be computed function of the air permeability µ0. A mean flux density can be considered for ...
DIAGNOSTIC NEWS What Can Go Wrong with Turbo Generator Rotor Windings
... insulation system. The insulation between the turns is usually an epoxy/polyester glass or Nomex laminate, sometimes bonded to the conductor surface. The slot liner is typically a molded laminate, shaped to the slot contours and used to isolate the coils from the rotor forging. In the end winding, i ...
... insulation system. The insulation between the turns is usually an epoxy/polyester glass or Nomex laminate, sometimes bonded to the conductor surface. The slot liner is typically a molded laminate, shaped to the slot contours and used to isolate the coils from the rotor forging. In the end winding, i ...
QUALITROL-IRIS POWER IS THE WORLD’S LARGEST PROVIDER OF MONITORING
... IRIS POWER RFAII-R The Iris Power RFAII-R technology is a second generation rotor flux analyzer that revolutionizes the analysis of the flux data by providing an initial diagnosis of the rotor winding condition usually even if the generator load is constant! This portable instrument can collect and ...
... IRIS POWER RFAII-R The Iris Power RFAII-R technology is a second generation rotor flux analyzer that revolutionizes the analysis of the flux data by providing an initial diagnosis of the rotor winding condition usually even if the generator load is constant! This portable instrument can collect and ...
EH35754760
... Nowadays, Induction Motors drives are popular in industries, because of their advantages over the DC drives. The variable speed induction motor drives need a better transient performance compared with steady state operation. In high performance speed control applications, the direct torque control ( ...
... Nowadays, Induction Motors drives are popular in industries, because of their advantages over the DC drives. The variable speed induction motor drives need a better transient performance compared with steady state operation. In high performance speed control applications, the direct torque control ( ...
Chapter III Description of Existing and Alternative Brakes
... current source) were supplied instead of a step voltage, the dynamic response would show significant improvements. Disengagement time can also be improved though use of reverse voltage to quicken current drop in the R-L circuit. ...
... current source) were supplied instead of a step voltage, the dynamic response would show significant improvements. Disengagement time can also be improved though use of reverse voltage to quicken current drop in the R-L circuit. ...
Variable Frequency Drives for conveyor starting
... for many conveyor applications, the starting advantages, protection advantages and control advantages of VFDs alone are enough to warrant their selection for conveyor applications. In those applications that do warrant speed variation, VFDs represent the most efficient and effective way to achieve t ...
... for many conveyor applications, the starting advantages, protection advantages and control advantages of VFDs alone are enough to warrant their selection for conveyor applications. In those applications that do warrant speed variation, VFDs represent the most efficient and effective way to achieve t ...
Digital Motion Control System Design
... switch or inline with motor phase If sampled in leg of switch a time when all Switches are switched to ground must be allowed Leg sampling will not allow for 100% duty cycle operation Depending on worst case slew rate as much as 10% duty cycle might be lost Sampling in line with phase requires eithe ...
... switch or inline with motor phase If sampled in leg of switch a time when all Switches are switched to ground must be allowed Leg sampling will not allow for 100% duty cycle operation Depending on worst case slew rate as much as 10% duty cycle might be lost Sampling in line with phase requires eithe ...
It is sometimes difficult to find the polarity of an
... 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 10-3 m2, and rotates in a 0.10-T magnetic field. When the peak emf being genera ...
... 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 10-3 m2, and rotates in a 0.10-T magnetic field. When the peak emf being genera ...
IOSR Journal of Electrical and Electronics Engineering PP 09-14 www.iosrjournals.org
... One of the more common types of transformer cooling equipment is auxiliary fans. These can be used to keep 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 con ...
... One of the more common types of transformer cooling equipment is auxiliary fans. These can be used to keep 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 con ...
MPU/0 Instructions(Word)
... 3 – 4 STOP (N.C.) This input requires a momentary input to stop the operating cycle. If a permanent input is applied the operating cycle will be stopped for the duration of the input; following which another start input is required to re-commence the operating cycle. 5 – 6 – 7 RADIO RECEIVER (N.O.) ...
... 3 – 4 STOP (N.C.) This input requires a momentary input to stop the operating cycle. If a permanent input is applied the operating cycle will be stopped for the duration of the input; following which another start input is required to re-commence the operating cycle. 5 – 6 – 7 RADIO RECEIVER (N.O.) ...
63-2190 - Series 90 Modutrol IV Motors
... • The mechanical adjustment (cams) establishes the fully open (clockwise, as viewed from the power end) and fully closed positions of the motor shaft. • The electrical adjustment (trim pot) matches the feedback resistance change to the motor stroke. • TRADELINE motors are shipped with stroke set at ...
... • The mechanical adjustment (cams) establishes the fully open (clockwise, as viewed from the power end) and fully closed positions of the motor shaft. • The electrical adjustment (trim pot) matches the feedback resistance change to the motor stroke. • TRADELINE motors are shipped with stroke set at ...
60ml “TL-CL
... on from one phase winding to the next by operation of 45 means, which are coupled with the rotor and which are mechanically operative in one of the two directions of ro the electronic control circuit which can take the form tation can be provided instead of one of the RC net of a multivibrator or of ...
... on from one phase winding to the next by operation of 45 means, which are coupled with the rotor and which are mechanically operative in one of the two directions of ro the electronic control circuit which can take the form tation can be provided instead of one of the RC net of a multivibrator or of ...
DC Shunt Motors - PSSurvival.com
... also be compared to the amount of current the motor draws. The motor must have its electrical installation completed to use this method. The motor should be started, and if it is drawing too much current, the belt should be loosened slightly but not enough to allow the load to slip. If the belt is s ...
... also be compared to the amount of current the motor draws. The motor must have its electrical installation completed to use this method. The motor should be started, and if it is drawing too much current, the belt should be loosened slightly but not enough to allow the load to slip. If the belt is s ...
LabVIEW based Electrical Machines Laboratory for
... Abstract: - The Laboratory session in any engineering education particularly in Electrical Engineering is critical as these Labs are designed for students in accordance with theoretical course work. Software based Electrical Machines cost less and have provision of wide ranging change in parameters ...
... Abstract: - The Laboratory session in any engineering education particularly in Electrical Engineering is critical as these Labs are designed for students in accordance with theoretical course work. Software based Electrical Machines cost less and have provision of wide ranging change in parameters ...
Supplementary Protectors (UL1077 mini circuit breakers) 3
... Branch circuit overcurrent protective devices (OCPD) can be used everywhere OCPD are used, from protection of motors and motor circuits and group motor circuits, to protection of distribution and utilization equipment. Supplemental OCPD can only be used where proper protection is already being provi ...
... Branch circuit overcurrent protective devices (OCPD) can be used everywhere OCPD are used, from protection of motors and motor circuits and group motor circuits, to protection of distribution and utilization equipment. Supplemental OCPD can only be used where proper protection is already being provi ...
Electric motor
An electric motor is an electrical machine that converts electrical energy into mechanical energy. The reverse of this would be the conversion of mechanical energy into electrical energy and is done by an electric generator.In normal motoring mode, most electric motors operate through the interaction between an electric motor's magnetic field and winding currents to generate force within the motor. In certain applications, such as in the transportation industry with traction motors, electric motors can operate in both motoring and generating or braking modes to also produce electrical energy from mechanical energy.Found in applications as diverse as industrial fans, blowers and pumps, machine tools, household appliances, power tools, and disk drives, electric motors can be powered by direct current (DC) sources, such as from batteries, motor vehicles or rectifiers, or by alternating current (AC) sources, such as from the power grid, inverters or generators. Small motors may be found in electric watches. General-purpose motors with highly standardized dimensions and characteristics provide convenient mechanical power for industrial use. The largest of electric motors are used for ship propulsion, pipeline compression and pumped-storage applications with ratings reaching 100 megawatts. Electric motors may be classified by electric power source type, internal construction, application, type of motion output, and so on.Electric motors are used to produce linear or rotary force (torque), and should be distinguished from devices such as magnetic solenoids and loudspeakers that convert electricity into motion but do not generate usable mechanical powers, which are respectively referred to as actuators and transducers.