Alternative Motor Technologies for Traction Drives of Hybrid and
... in sequence so it acts much like a stepper motor. With current technology, SR motors have inherently high torque ripple. In addition, the high radial forces can create excessive noise levels if not carefully designed. These machines are best suited in high-speed applications where ripple is not an i ...
... in sequence so it acts much like a stepper motor. With current technology, SR motors have inherently high torque ripple. In addition, the high radial forces can create excessive noise levels if not carefully designed. These machines are best suited in high-speed applications where ripple is not an i ...
Document
... An increase in the load will cause the rotor to lag the stator field but still maintain synchronous speed. Increase in load has increased the torque component, but the field strength has decreased due to the increase in length of the air gap between the rotor and the stator. ...
... An increase in the load will cause the rotor to lag the stator field but still maintain synchronous speed. Increase in load has increased the torque component, but the field strength has decreased due to the increase in length of the air gap between the rotor and the stator. ...
View/Download-PDF - International Journal of Computer Science
... are encountered in these motor for variable speed operation over last decades continuing technology development in power semiconductors, microprocessors, adjustable speed drivers control schemes and permanent-magnet brushless electric motor production have been combined to enable reliable, cost-effe ...
... are encountered in these motor for variable speed operation over last decades continuing technology development in power semiconductors, microprocessors, adjustable speed drivers control schemes and permanent-magnet brushless electric motor production have been combined to enable reliable, cost-effe ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,
... replaced by dc current. A theoretical concept is developed for DTC based induction motor drive. The performance is simulated using MATLAB/SIMULINK software. Index Terms: Direct Torque Control (DTC), Induction Motor (IM), sensor count reduction, single current sensor. ...
... replaced by dc current. A theoretical concept is developed for DTC based induction motor drive. The performance is simulated using MATLAB/SIMULINK software. Index Terms: Direct Torque Control (DTC), Induction Motor (IM), sensor count reduction, single current sensor. ...
MASTERDRIVE Compact Plus
... frequency (F) to the motor. Torque (T) is affected by flux (Φ) and working current (IW). The drive will maintain constant flux by keeping the voltage and frequency ratio constant. To do this the drive increases voltage and frequency in proportion. During acceleration working current will increase, h ...
... frequency (F) to the motor. Torque (T) is affected by flux (Φ) and working current (IW). The drive will maintain constant flux by keeping the voltage and frequency ratio constant. To do this the drive increases voltage and frequency in proportion. During acceleration working current will increase, h ...
Quotations - School Of Engineering
... lower in the specimen. With a calibrated torsion spring to give a rotation of 0.1º/ sec, Rate of rotation 1/60rpm, Vane as per IS, suitable for operation on 220V , 50Hz, single phase AC supply. Graduate dial to measure angle of torque. Pavement intensity test apparatus - Digital type with load cells ...
... lower in the specimen. With a calibrated torsion spring to give a rotation of 0.1º/ sec, Rate of rotation 1/60rpm, Vane as per IS, suitable for operation on 220V , 50Hz, single phase AC supply. Graduate dial to measure angle of torque. Pavement intensity test apparatus - Digital type with load cells ...
Document
... with 200V between lines. The rotor resistance and standstill reactance per phase are 0.1Ω and 0.9Ω respectively. The ratio of rotor to stator turns is 0.67. Calculate: (a) total torque at 4% slip; (b) total mechanical power at 4% slip; (c) maximum torque; (d) speed at maximum torque; (e) maximum mec ...
... with 200V between lines. The rotor resistance and standstill reactance per phase are 0.1Ω and 0.9Ω respectively. The ratio of rotor to stator turns is 0.67. Calculate: (a) total torque at 4% slip; (b) total mechanical power at 4% slip; (c) maximum torque; (d) speed at maximum torque; (e) maximum mec ...
Basic Biomechanics
... magnitude of force exerted by the effort and resistance distance from the axis of movement that the force is applied ...
... magnitude of force exerted by the effort and resistance distance from the axis of movement that the force is applied ...
Kinesiology II
... magnitude of force exerted by the effort and resistance distance from the axis of movement that the force is applied ...
... magnitude of force exerted by the effort and resistance distance from the axis of movement that the force is applied ...
Propulsion for Small Electric Aircraft
... Kv relates the motor speed (RPM) to the voltage applied to the windings. This characterizes how the motor's back emf changes with speed. For many motors, this relation is roughly linear so we can write: RPM = Kv (V - I R) Where V is the applied voltage, I is the current, and R is the armature resist ...
... Kv relates the motor speed (RPM) to the voltage applied to the windings. This characterizes how the motor's back emf changes with speed. For many motors, this relation is roughly linear so we can write: RPM = Kv (V - I R) Where V is the applied voltage, I is the current, and R is the armature resist ...
TESCO GA Series Field Test Kit (with Resistive Load)
... designed to reduce the weight of field test equipment to the lowest possible limit. The carrying case is fabricated from durable powder coated aluminum. The total weight of the meter test kit including leads, and digital standard is approximately 25 lbs. A 120/240/277/480 voltage change switch is pr ...
... designed to reduce the weight of field test equipment to the lowest possible limit. The carrying case is fabricated from durable powder coated aluminum. The total weight of the meter test kit including leads, and digital standard is approximately 25 lbs. A 120/240/277/480 voltage change switch is pr ...
Mechanical Workshop - Mid
... Use simple materials (like wood), then permanent materials Test, make changes, retest ...
... Use simple materials (like wood), then permanent materials Test, make changes, retest ...
ZJ013646652
... hydraulic system through the use of compact system units Also, since EPS is an on-demand system that operates only when the steering wheel is turned, the fuel efficiency of vehicle equipped with such system is up to 3% better than that of automotive equipped with an equivalent-output hydraulic syste ...
... hydraulic system through the use of compact system units Also, since EPS is an on-demand system that operates only when the steering wheel is turned, the fuel efficiency of vehicle equipped with such system is up to 3% better than that of automotive equipped with an equivalent-output hydraulic syste ...
lecture 9 - Openstorage Gunadarma
... It is not taking account the variations of circuit voltage ...
... It is not taking account the variations of circuit voltage ...
Glossary
... object is rotating along with the direction in which it is rotating. The SI unit of angular velocity is radians per second, although it may be measured in other units such as degrees per second, degrees per hour, etc. When measured in cycles or rotations per unit time (e.g. revolutions per minute), ...
... object is rotating along with the direction in which it is rotating. The SI unit of angular velocity is radians per second, although it may be measured in other units such as degrees per second, degrees per hour, etc. When measured in cycles or rotations per unit time (e.g. revolutions per minute), ...
Electrical Wheel Chair C.Adhok shaja, E.Rakesh Kumar, K.Nagarjun
... This is a wheel chair which runs electrically without any manual effort. Manual wheelchair is designed for handicapped people who can move themselves from one place to other by manual effort. But this electrical wheelchair is very much useful for the elderly people who don’t even have the strength t ...
... This is a wheel chair which runs electrically without any manual effort. Manual wheelchair is designed for handicapped people who can move themselves from one place to other by manual effort. But this electrical wheelchair is very much useful for the elderly people who don’t even have the strength t ...
pub3241fbasicsofonsitepumpingplantevaluations
... This is because it is very difficult to measure output power of an electric motor during on-site testing and because electric motors generally retain efficiency until failure. The most reliable method for testing electrical ...
... This is because it is very difficult to measure output power of an electric motor during on-site testing and because electric motors generally retain efficiency until failure. The most reliable method for testing electrical ...
Matching servomotors and amplifiers
... the rate of rise of this surge current is another possibility, but again this approach adds cost and lowers system efficiency. ...
... the rate of rise of this surge current is another possibility, but again this approach adds cost and lowers system efficiency. ...
Speed control 3-phase induction motors
... The actual voltage applied to the stator is reduced the speed change due to variable stator voltage. In the stator position a minimum stator voltage is applied to the speed of the induction motor is minimum stator voltage is applied an speed of the induction motor is minimum and the reduced towards ...
... The actual voltage applied to the stator is reduced the speed change due to variable stator voltage. In the stator position a minimum stator voltage is applied to the speed of the induction motor is minimum stator voltage is applied an speed of the induction motor is minimum and the reduced towards ...
Powertec Genesis Start-up Procedure
... Apply a start command to the drive, but do not give a speed reference. (It may be necessary to disconnect the speed reference from the control to assure zero volts). Turn the motor shaft by hand while observing the HS(x) LED’s for changing state. You should observe the three LED’s change state f ...
... Apply a start command to the drive, but do not give a speed reference. (It may be necessary to disconnect the speed reference from the control to assure zero volts). Turn the motor shaft by hand while observing the HS(x) LED’s for changing state. You should observe the three LED’s change state f ...
Using E-Motor Emulators for Close-To
... autonomous devices that can be run completely stand-alone. The emulators are usually employed for the operation of drive inverters in a test environment that emulates not only the electric motor, but also the drivetrain battery. This topology enables a bi-directional energy flow, whereby only the po ...
... autonomous devices that can be run completely stand-alone. The emulators are usually employed for the operation of drive inverters in a test environment that emulates not only the electric motor, but also the drivetrain battery. This topology enables a bi-directional energy flow, whereby only the po ...
AC Induction Motor Slip – What It Is And How To
... Figure 1. Cutaway of squirrel cage AC induction motor opened to show the stator and rotor construction, the shaft with bearings and the cooling fan Motor Slip Is Necessary For Torque Generation An AC induction motor consists of two assemblies,stator and rotor. The stator structure is composed of ste ...
... Figure 1. Cutaway of squirrel cage AC induction motor opened to show the stator and rotor construction, the shaft with bearings and the cooling fan Motor Slip Is Necessary For Torque Generation An AC induction motor consists of two assemblies,stator and rotor. The stator structure is composed of ste ...
How Motors Operate Presented by John Freeland
... connection determines if the motor runs clockwise or counterclockwise If both ends of the starting and running windings are accessible, the motor can be reversed “Induction” in a split phase induction motor means a current and therefore a magnetic field is induced in the rotor by the stator magnetic ...
... connection determines if the motor runs clockwise or counterclockwise If both ends of the starting and running windings are accessible, the motor can be reversed “Induction” in a split phase induction motor means a current and therefore a magnetic field is induced in the rotor by the stator magnetic ...
Cutting Force Measurement
... measurements with specific units developed for all types of machining operations including turning, milling, drilling and grinding. Our patented sensor technology provides immense signal detail. The exceptionally rigid measuring elements allow signal tooth identification, even for very high speed ma ...
... measurements with specific units developed for all types of machining operations including turning, milling, drilling and grinding. Our patented sensor technology provides immense signal detail. The exceptionally rigid measuring elements allow signal tooth identification, even for very high speed ma ...
Minding Your P`s and Q`s
... • A customer requires control of a conveyor that feeds a rock crusher the current design is a motor that starts across the line. When the load meter reaches 85% load the operator turns off the conveyor. When the load meter drops below 45% the operator is required to turn the conveyor on. This proces ...
... • A customer requires control of a conveyor that feeds a rock crusher the current design is a motor that starts across the line. When the load meter reaches 85% load the operator turns off the conveyor. When the load meter drops below 45% the operator is required to turn the conveyor on. This proces ...
Dynamometer
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A dynamometer or ""dyno"" for short, is a device for measuring force, torque, or power. For example, the power produced by an engine, motor or other rotating prime mover can be calculated by simultaneously measuring torque and rotational speed (RPM).A dynamometer can also be used to determine the torque and power required to operate a driven machine such as a pump. In that case, a motoring or driving dynamometer is used. A dynamometer that is designed to be driven is called an absorption or passive dynamometer. A dynamometer that can either drive or absorb is called a universal or active dynamometer.In addition to being used to determine the torque or power characteristics of a machine under test (MUT), dynamometers are employed in a number of other roles. In standard emissions testing cycles such as those defined by the United States Environmental Protection Agency (US EPA), dynamometers are used to provide simulated road loading of either the engine (using an engine dynamometer) or full powertrain (using a chassis dynamometer). In fact, beyond simple power and torque measurements, dynamometers can be used as part of a testbed for a variety of engine development activities, such as the calibration of engine management controllers, detailed investigations into combustion behavior, and tribology.In the medical terminology, hand-held dynamometers are used for routine screening of grip and hand strength, and the initial and ongoing evaluation of patients with hand trauma or dysfunction. They are also used to measure grip strength in patients where compromise of the cervical nerve roots or peripheral nerves is suspected.In the rehabilitation, kinesiology, and ergonomics realms, force dynamometers are used for measuring the back, grip, arm, and/or leg strength of athletes, patients, and workers to evaluate physical status, performance, and task demands. Typically the force applied to a lever or through a cable is measured and then converted to a moment of force by multiplying by the perpendicular distance from the force to the axis of the level.