Kinetix Motion Control
... In today's manufacturing world, machine builders are facing increasing pressure to maximize output while minimizing environmental impact. Now, more than ever, it is critical to understand how you can design, build and maintain sustainable machines that optimize energy consumption. Incorporating new ...
... In today's manufacturing world, machine builders are facing increasing pressure to maximize output while minimizing environmental impact. Now, more than ever, it is critical to understand how you can design, build and maintain sustainable machines that optimize energy consumption. Incorporating new ...
File
... Wheatstone bridge is not suitable for measurement of very low resistance. Kelvin bridge is modification of W Bridge and is used to measure vales of resistance below 1 ohm. In kelvin double bridge it include second set of ratio arms. This circuit is mainly used for measuring very low resistance from ...
... Wheatstone bridge is not suitable for measurement of very low resistance. Kelvin bridge is modification of W Bridge and is used to measure vales of resistance below 1 ohm. In kelvin double bridge it include second set of ratio arms. This circuit is mainly used for measuring very low resistance from ...
Lab Manual of Basic Electrical Engineering LAB
... THEORY:An induction or asynchronous motor is an AC electric motor in which the electric current in the rotor needed to produce torque is induced by electromagnetic induction from the magnetic field of the stator winding. An induction motor therefore does not require mechanical commutation, separate ...
... THEORY:An induction or asynchronous motor is an AC electric motor in which the electric current in the rotor needed to produce torque is induced by electromagnetic induction from the magnetic field of the stator winding. An induction motor therefore does not require mechanical commutation, separate ...
Open-Loop Torque Boost and Simple Slip Frequency Compensation
... The speed controls of induction motor with V/f inverters have been widely known. However, it is torquespeed characteristic at low speeds does not function well enough because maximum-torque will be decreased. Due to stator resistance voltage drop affecting the low speed range, the stator resistance ...
... The speed controls of induction motor with V/f inverters have been widely known. However, it is torquespeed characteristic at low speeds does not function well enough because maximum-torque will be decreased. Due to stator resistance voltage drop affecting the low speed range, the stator resistance ...
Is Your Factory Power Source Corrupting Your Product Testing?
... from smaller units than would be required by random application of the test voltage. For really tough products like high pressure pumps, the voltage and frequency can both be ramped. This is similar to what is done in VFD (Variable Frequency Drives) circuits. This method allows for controlled torque ...
... from smaller units than would be required by random application of the test voltage. For really tough products like high pressure pumps, the voltage and frequency can both be ramped. This is similar to what is done in VFD (Variable Frequency Drives) circuits. This method allows for controlled torque ...
introduction - KFUPM Faculty List
... commutator as it revolves, connecting the coil electrically to external wires. As the armature turns, each brush is in contact alternately with the halves of the commutator, changing position at the moment when the current in the armature coil reverses its direction. Thus there is a flow of unidirec ...
... commutator as it revolves, connecting the coil electrically to external wires. As the armature turns, each brush is in contact alternately with the halves of the commutator, changing position at the moment when the current in the armature coil reverses its direction. Thus there is a flow of unidirec ...
Hercules Dual 15A 6-20V Motor Controller Introduction
... controller processor, motor drive circuit, charging circuit and protection circuit. It features a complete solution to power supply, control and drive. Compared with L298, its half bridge motor controller IR2104 and N-MOSFET take prominent advantage to drive heavy load device with output current eve ...
... controller processor, motor drive circuit, charging circuit and protection circuit. It features a complete solution to power supply, control and drive. Compared with L298, its half bridge motor controller IR2104 and N-MOSFET take prominent advantage to drive heavy load device with output current eve ...
pub3241bvariablefrequencydrives
... a pump down before pump damage occurs. Depending upon the application, these safety features could offset the cost of a VFD by avoiding potential pump repairs. VFDs involve electronic equipment that generates significant amounts of heat during operation. VFDs should be mounted in white NEMA-3R (outd ...
... a pump down before pump damage occurs. Depending upon the application, these safety features could offset the cost of a VFD by avoiding potential pump repairs. VFDs involve electronic equipment that generates significant amounts of heat during operation. VFDs should be mounted in white NEMA-3R (outd ...
PLL Based Slip Frequency Control System for Improving Stability of
... such as slip-frequency control, flux control, vector control can be used to control the induction motor. In steady-state characteristics of a torque and speed Control system of an induction motor utilizing rotor slot harmonics for slip frequency sensing. In this method to detect the slip frequency o ...
... such as slip-frequency control, flux control, vector control can be used to control the induction motor. In steady-state characteristics of a torque and speed Control system of an induction motor utilizing rotor slot harmonics for slip frequency sensing. In this method to detect the slip frequency o ...
ELECTRICAL STUFF FOR MECHANICAL ENGINEERS
... equipment voltage rating. The difference is the allowance for voltage drop between the electrical service delivery or transformer secondary and the point of use. But, just to keep everybody confused, we still encounter the old obsolete voltage designations. The following is a table listing the ...
... equipment voltage rating. The difference is the allowance for voltage drop between the electrical service delivery or transformer secondary and the point of use. But, just to keep everybody confused, we still encounter the old obsolete voltage designations. The following is a table listing the ...
pub3241bvariablefrequencydrives
... a pump down before pump damage occurs. Depending upon the application, these safety features could offset the cost of a VFD by avoiding potential pump repairs. VFDs involve electronic equipment that generates significant amounts of heat during operation. VFDs should be mounted in white NEMA-3R (outd ...
... a pump down before pump damage occurs. Depending upon the application, these safety features could offset the cost of a VFD by avoiding potential pump repairs. VFDs involve electronic equipment that generates significant amounts of heat during operation. VFDs should be mounted in white NEMA-3R (outd ...
Electronically Commutated Motors
... 2. 0-10V DC Lead – A 36” long control lead is prewired from the motor which accepts a 0-10V DC signal and can be wired into building control systems or field supplied controls. With this option, the control leads are terminated in a standard 2x4 junction box from the factory. Field supplied controll ...
... 2. 0-10V DC Lead – A 36” long control lead is prewired from the motor which accepts a 0-10V DC signal and can be wired into building control systems or field supplied controls. With this option, the control leads are terminated in a standard 2x4 junction box from the factory. Field supplied controll ...
GE Motors Product Line
... minimum Corona Inception Voltage (CIV) up to 2000 volts peak with a rise time of 0.1 microseconds. ...
... minimum Corona Inception Voltage (CIV) up to 2000 volts peak with a rise time of 0.1 microseconds. ...
Analytical Design of Permanent-Magnet Traction-Drive Motors Chunting Chris Mi
... has a very low Curie temperature and high temperature sensitivity. It is often necessary to increase the size of magnets to avoid demagnetization at high temperatures and high currents. On the other hand, it is advantageous to use as little PM material as possible in order to reduce the cost without ...
... has a very low Curie temperature and high temperature sensitivity. It is often necessary to increase the size of magnets to avoid demagnetization at high temperatures and high currents. On the other hand, it is advantageous to use as little PM material as possible in order to reduce the cost without ...
Position Sensorless Control Based on Coordinate Transformation
... • In CHCC, actual three-phase currents are compared with their respective reference currents and error signals are sent to the hysteresis controller. Each phase current errors are compared with upper and lower hysteresis band. If current error of one of the phase of the motor is crossing upper hyste ...
... • In CHCC, actual three-phase currents are compared with their respective reference currents and error signals are sent to the hysteresis controller. Each phase current errors are compared with upper and lower hysteresis band. If current error of one of the phase of the motor is crossing upper hyste ...
initial current reduction of synchronous motors with salient poles by
... Synchronous motors with salient poles are not able to get started themselves. One way of starting them is the usage of LeBlanc's absorber when the machine starts as asynchronous motor. To avoid electric shock, the stator is connected to a lower voltage ranging between 0,25Ur and 0,3Ur. The rotor beg ...
... Synchronous motors with salient poles are not able to get started themselves. One way of starting them is the usage of LeBlanc's absorber when the machine starts as asynchronous motor. To avoid electric shock, the stator is connected to a lower voltage ranging between 0,25Ur and 0,3Ur. The rotor beg ...
ECE 477 Final Presentation Group ?? Fall 2004
... Tilt angle is measured by an accelerometer Angular rate is measure by a gyroscope Power is supplied from two 12V, sealed, lead acid batteries. Two 24V DC motors drive the vehicle and are controlled independently by h-bridges Turning is controlled by a thumb joystick Forward/reverse control ...
... Tilt angle is measured by an accelerometer Angular rate is measure by a gyroscope Power is supplied from two 12V, sealed, lead acid batteries. Two 24V DC motors drive the vehicle and are controlled independently by h-bridges Turning is controlled by a thumb joystick Forward/reverse control ...
Brushless DC electric motor
Brushless DC electric motor (BLDC motors, BL motors) also known as electronically commutated motors (ECMs, EC motors) are synchronous motors that are powered by a DC electric source via an integrated inverter/switching power supply, which produces an AC electric signal to drive the motor. In this context, AC, alternating current, does not imply a sinusoidal waveform, but rather a bi-directional current with no restriction on waveform. Additional sensors and electronics control the inverter output amplitude and waveform (and therefore percent of DC bus usage/efficiency) and frequency (i.e. rotor speed).The rotor part of a brushless motor is often a permanent magnet synchronous motor, but can also be a switched reluctance motor, or induction motor.Brushless motors may be described as stepper motors; however, the term stepper motor tends to be used for motors that are designed specifically to be operated in a mode where they are frequently stopped with the rotor in a defined angular position. This page describes more general brushless motor principles, though there is overlap.Two key performance parameters of brushless DC motors are the motor constants Kv and Km.