GUI
... sources and load groups that are independent of eac:h other. Such a design will conform to the provisions 4of Section 5.2.2(5) of IEEE Std 308-1971.' Secticin 5.2.2(5) states: "Auxiliary devices that are required I.0 operate dependent equipment shall be supplied from a related bus section to prevent ...
... sources and load groups that are independent of eac:h other. Such a design will conform to the provisions 4of Section 5.2.2(5) of IEEE Std 308-1971.' Secticin 5.2.2(5) states: "Auxiliary devices that are required I.0 operate dependent equipment shall be supplied from a related bus section to prevent ...
Gear Trains
... are far too high to be useful, and at torques that are far too low. Gear reduction is the standard method by which a motor is made useful. ...
... are far too high to be useful, and at torques that are far too low. Gear reduction is the standard method by which a motor is made useful. ...
Gear Trains
... are far too high to be useful, and at torques that are far too low. Gear reduction is the standard method by which a motor is made useful. ...
... are far too high to be useful, and at torques that are far too low. Gear reduction is the standard method by which a motor is made useful. ...
RESISTIVE LOAD BANK 500 KW PORTABLE LOAD BANK
... that simulates electrical loads. It is ideal for routine load testing of standby diesel generating systems at remote sites or for factory production line testing of (UPS) Uninterruptible Power Supplies, turbines, or engine generator sets. This model provides resistive loading up to 500 KW at 400 Vo ...
... that simulates electrical loads. It is ideal for routine load testing of standby diesel generating systems at remote sites or for factory production line testing of (UPS) Uninterruptible Power Supplies, turbines, or engine generator sets. This model provides resistive loading up to 500 KW at 400 Vo ...
experiment 1 - Portal UniMAP
... parameters measured by the meters that are turned ON in the Metering window should be selected in the Record Settings dialog box (a check mark appears beside each parameter selected). Click the OK button in the Record Settings dialog box. This close the dialog box and record the values indicate by t ...
... parameters measured by the meters that are turned ON in the Metering window should be selected in the Record Settings dialog box (a check mark appears beside each parameter selected). Click the OK button in the Record Settings dialog box. This close the dialog box and record the values indicate by t ...
White paper on Soft Starter used with Slip ring motors
... connected inside the delta loop of a delta connected motor, controlling the voltage applied to each winding. (Six wire or Inside Delta connection). ...
... connected inside the delta loop of a delta connected motor, controlling the voltage applied to each winding. (Six wire or Inside Delta connection). ...
Experiment 6
... supplied by the source, 60 Hz in North America, and by the number of magnetic poles with which the stator is built. This speed is known as the synchronous speed and is measured in revolutions per minute, RPM. Poles always come in pairs ( a north pole and a south pole) and for a two-pole motor, the f ...
... supplied by the source, 60 Hz in North America, and by the number of magnetic poles with which the stator is built. This speed is known as the synchronous speed and is measured in revolutions per minute, RPM. Poles always come in pairs ( a north pole and a south pole) and for a two-pole motor, the f ...
Latest Repair - Longo Electrical
... Following the design verification, coils for the new winding to be inserted are wound on a computercontrolled winding machine. The computer stores all the key winding parameters such as turns, wire size, and exact coil shape. By precisely “layering” the turns, less winding space is required in the s ...
... Following the design verification, coils for the new winding to be inserted are wound on a computercontrolled winding machine. The computer stores all the key winding parameters such as turns, wire size, and exact coil shape. By precisely “layering” the turns, less winding space is required in the s ...
a Microsoft Word version
... RPM = (120) X (f) / (p) RPM – Revolutions per minute. This is the synchronous speed of the magnetic field. (f) - Frequency of the alternating current (AC) power expressed in cycles or hertz per second. (p) - The number of poles in the motor stator. The squirrel cage rotor spins at a speed slightly l ...
... RPM = (120) X (f) / (p) RPM – Revolutions per minute. This is the synchronous speed of the magnetic field. (f) - Frequency of the alternating current (AC) power expressed in cycles or hertz per second. (p) - The number of poles in the motor stator. The squirrel cage rotor spins at a speed slightly l ...
Disturbance Torque Observers for the Induction Motor Drives Mihai
... the control algorithms of the drive systems in order to reject efficiently the effect of the load torque on the speed or on the position (feedforward control). For example, this kind of control is used by the directdrive systems that function in low speed range [4-6]. Also, the values of the estimat ...
... the control algorithms of the drive systems in order to reject efficiently the effect of the load torque on the speed or on the position (feedforward control). For example, this kind of control is used by the directdrive systems that function in low speed range [4-6]. Also, the values of the estimat ...
L-11 Back emf - Synergy Dhenkanal
... When d.c. voltage V is applied across the motor terminals, the field magnets are excited and armature conductors are supplied with current. Therefore, driving torque acts on the armature which begins to rotate. As the armature rotates, back e.m.f. Eb is induced which opposes the applied voltage V. T ...
... When d.c. voltage V is applied across the motor terminals, the field magnets are excited and armature conductors are supplied with current. Therefore, driving torque acts on the armature which begins to rotate. As the armature rotates, back e.m.f. Eb is induced which opposes the applied voltage V. T ...
Gyro precessing system
... in the same direction, and this characteristic of the regu lator is utilized to produce the required relationship be required for latitude correction varies as the sine of the tween the torque of motor 5 and the frequency of latitude angle, the rotation of the rotor can be calibrated along a linear ...
... in the same direction, and this characteristic of the regu lator is utilized to produce the required relationship be required for latitude correction varies as the sine of the tween the torque of motor 5 and the frequency of latitude angle, the rotation of the rotor can be calibrated along a linear ...
Lab-3: Squirrel-Cage Induction Motor Xm Xl R R Xl s
... if needed, so that the supply is not current limited. Initially, the motor should not be spinning. 2) Slowly turn on the fac knob on the Inverter and increase the frequency. You should observe that the motor is now starting to rotate and that you can easily control its speed by changing the electric ...
... if needed, so that the supply is not current limited. Initially, the motor should not be spinning. 2) Slowly turn on the fac knob on the Inverter and increase the frequency. You should observe that the motor is now starting to rotate and that you can easily control its speed by changing the electric ...
Control characteristics for quasi-optimal operation of switched
... The test rig consists of a separately excited d.c. generator connected to the tested SRM with an induction torque meter. The motor was supplied by a converter that enables the independent regulation of all three control variables: phase voltage Uav (by means of the PWM method), switchon angle on a ...
... The test rig consists of a separately excited d.c. generator connected to the tested SRM with an induction torque meter. The motor was supplied by a converter that enables the independent regulation of all three control variables: phase voltage Uav (by means of the PWM method), switchon angle on a ...
Drive and Motor Basics - Allen
... 1HP motor has a nameplate current of 3.6 amps, then when it draws 3.6 amps (at proper voltage and frequency) it must be producing 100% of it’s nameplate torque. Torque and current remain directly proportional up to approximately 10% slip. Notice that as motor load increases from zero (point F) to 10 ...
... 1HP motor has a nameplate current of 3.6 amps, then when it draws 3.6 amps (at proper voltage and frequency) it must be producing 100% of it’s nameplate torque. Torque and current remain directly proportional up to approximately 10% slip. Notice that as motor load increases from zero (point F) to 10 ...
FE Torque Analysis of a Shaded
... be carried out by the torque matrix, containing torque values in a number of rotor positions spanned along a pole pitch at a range of current change. The computation of electromagnetic torque in the SPIM is performed by using different numerical methods, on the basis of the FEM results, obtained fro ...
... be carried out by the torque matrix, containing torque values in a number of rotor positions spanned along a pole pitch at a range of current change. The computation of electromagnetic torque in the SPIM is performed by using different numerical methods, on the basis of the FEM results, obtained fro ...
Is it the drive, the motor, or the load?
... motor in a short time, while a lower level of overload will take longer to trip the motor. When we want to evaluate the impact of a load on the motordrive system, we have to measure the current it draws. Of course, this current draw typically varies over time as the load varies. The measurement of c ...
... motor in a short time, while a lower level of overload will take longer to trip the motor. When we want to evaluate the impact of a load on the motordrive system, we have to measure the current it draws. Of course, this current draw typically varies over time as the load varies. The measurement of c ...
experiment 3 title: separately-excited dc generators
... It is important to know dc generators operation because this helps understanding how a separately-excited dc motor can be used as an electric brake in modern dc motor drives. DC motor can be considered as a linear voltage-to-speed converter. Figure 1 illustrates a dc motor operating as a dc generato ...
... It is important to know dc generators operation because this helps understanding how a separately-excited dc motor can be used as an electric brake in modern dc motor drives. DC motor can be considered as a linear voltage-to-speed converter. Figure 1 illustrates a dc motor operating as a dc generato ...
3. starting a permanent split-capacitor motor
... This is the main reason why this motor is called single-phase with capacitor motor. This type of motor has not a starting switch and operates in the same way as a capacitor-start capacitor-run induction motor. It produces a uniform torque and it is less noisy while running. The split phase capacitor ...
... This is the main reason why this motor is called single-phase with capacitor motor. This type of motor has not a starting switch and operates in the same way as a capacitor-start capacitor-run induction motor. It produces a uniform torque and it is less noisy while running. The split phase capacitor ...
Separately Excited DC Generators
... It is important to know dc generators operation because this helps understanding how a separately-excited dc motor can be used as an electric brake in modern dc motor drives. DC motor can be considered as a linear voltage-to-speed converter. Figure 1 illustrates a dc motor operating as a dc generato ...
... It is important to know dc generators operation because this helps understanding how a separately-excited dc motor can be used as an electric brake in modern dc motor drives. DC motor can be considered as a linear voltage-to-speed converter. Figure 1 illustrates a dc motor operating as a dc generato ...
Electric Drive System- Kramer on Shaft.pages
... That interest has been promoted by the need for more efficient and reliable drive systems. The Static Kramer drive system is shown in fig. 1. In this system, the change in the rotor's voltage is obtained through a change in the slip. Thus, the speed control of the induction motor can be accomplished ...
... That interest has been promoted by the need for more efficient and reliable drive systems. The Static Kramer drive system is shown in fig. 1. In this system, the change in the rotor's voltage is obtained through a change in the slip. Thus, the speed control of the induction motor can be accomplished ...
2012
... a) With the help of necessary derivation, show that i) maximum torque is independent of rotor circuit resistance ii) maximum torque varies directly as the square of supply voltage. b) A 746 kW, 3-phase, 50Hz, 16-pole induction motor has a rotor impedance of (0.02+j0.15) Ω at stand still. Full -load ...
... a) With the help of necessary derivation, show that i) maximum torque is independent of rotor circuit resistance ii) maximum torque varies directly as the square of supply voltage. b) A 746 kW, 3-phase, 50Hz, 16-pole induction motor has a rotor impedance of (0.02+j0.15) Ω at stand still. Full -load ...
Document
... the DC supply. If the DC line voltage is constant, the armature voltage will be constant and thus the magnetic field strength will be constant. This consistency leads to a reasonably constant speed of operation. The speed does tend to drop with increasing load on the motor. This drop in speed is a r ...
... the DC supply. If the DC line voltage is constant, the armature voltage will be constant and thus the magnetic field strength will be constant. This consistency leads to a reasonably constant speed of operation. The speed does tend to drop with increasing load on the motor. This drop in speed is a r ...
Experiment 5
... the DC supply. If the DC line voltage is constant, the armature voltage will be constant and thus the magnetic field strength will be constant. This consistency leads to a reasonably constant speed of operation. The speed does tend to drop with increasing load on the motor. This drop in speed is a r ...
... the DC supply. If the DC line voltage is constant, the armature voltage will be constant and thus the magnetic field strength will be constant. This consistency leads to a reasonably constant speed of operation. The speed does tend to drop with increasing load on the motor. This drop in speed is a r ...
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.