Induction motor rotor bars
... It is important to note that an induction motor can and will run with a number of broken rotor bars but the performance will be effected in a number of ways. If a copper rotor bar breaks the damage can result in a major failure, damaging the stator winding and, in time, the stator core. Even in the ...
... It is important to note that an induction motor can and will run with a number of broken rotor bars but the performance will be effected in a number of ways. If a copper rotor bar breaks the damage can result in a major failure, damaging the stator winding and, in time, the stator core. Even in the ...
style guidelines to assist authors preparing papers using ms word
... severe supply voltage dip, the motor’s contribution to the fault causes both the rotor and stator current to increase rapidly to as high as six to ten times rated current. Thus, for a close – in stator short circuit, in addition to the converter being unable to extract power from the dc link and ret ...
... severe supply voltage dip, the motor’s contribution to the fault causes both the rotor and stator current to increase rapidly to as high as six to ten times rated current. Thus, for a close – in stator short circuit, in addition to the converter being unable to extract power from the dc link and ret ...
D N IAGNOSTIC
... steps: the acquisition of condition data; data processing for detection of anomalies and symptoms of problems; and maintenance decision making. Ideally, CBM allows maintenance personnel to do only the right things, minimizing spare parts cost, system downtime and time spent on maintenance. Condition ...
... steps: the acquisition of condition data; data processing for detection of anomalies and symptoms of problems; and maintenance decision making. Ideally, CBM allows maintenance personnel to do only the right things, minimizing spare parts cost, system downtime and time spent on maintenance. Condition ...
T25102106
... mains, whilst the wound rotor is fed from the Power Electronics Converter via slip rings to allow DIFG to operate at a variety of speeds in response to changing wind speed. Indeed, the basic concept is to interpose a frequency converter between the variable frequency induction generator and fixed fr ...
... mains, whilst the wound rotor is fed from the Power Electronics Converter via slip rings to allow DIFG to operate at a variety of speeds in response to changing wind speed. Indeed, the basic concept is to interpose a frequency converter between the variable frequency induction generator and fixed fr ...
Shrink wrapping machines ［Wrapping machines］
... These harmonics sometimes cause a malfunction in other control equipment that is connected to the same power source. Harmonics can be avoided by installing an external "reactor". To decrease "harmonics", we recommend to install DC reactors in all our inverter models. (NOTE: 100V input models require ...
... These harmonics sometimes cause a malfunction in other control equipment that is connected to the same power source. Harmonics can be avoided by installing an external "reactor". To decrease "harmonics", we recommend to install DC reactors in all our inverter models. (NOTE: 100V input models require ...
here
... At the ends of the rotor body, the turns pass from the end of one slot to its equivalent slot on the other side of the magnetic pole and are held in place in the end regions by steel end rings. A direct current of around 3000 amps flows through the rotor winding to produce the magnetic field, which ...
... At the ends of the rotor body, the turns pass from the end of one slot to its equivalent slot on the other side of the magnetic pole and are held in place in the end regions by steel end rings. A direct current of around 3000 amps flows through the rotor winding to produce the magnetic field, which ...
DSP-Based Field-Oriented Step Motor Control - CACT
... phase without any feedback of motor position or velocity. The motor phase advance rate can be set with a firmware constant, or with the user-adjustable pot setting that comes from the ADC. The closed-loop control routine advances the commanded phase on the basis of measured phase (however measured). ...
... phase without any feedback of motor position or velocity. The motor phase advance rate can be set with a firmware constant, or with the user-adjustable pot setting that comes from the ADC. The closed-loop control routine advances the commanded phase on the basis of measured phase (however measured). ...
influence of arrangement and sizes of magnets upon
... Abstract: Discussed in the paper are two-phase permanent magnet synchronous motors, and explored is influence of the magnet sizes as on induced voltage (EMF) so on cogging torque (CT). Induced voltage and the cogging torque have been calculated in ANSYS/Maxwell program. In more detail contemplated i ...
... Abstract: Discussed in the paper are two-phase permanent magnet synchronous motors, and explored is influence of the magnet sizes as on induced voltage (EMF) so on cogging torque (CT). Induced voltage and the cogging torque have been calculated in ANSYS/Maxwell program. In more detail contemplated i ...
Stepper Drive DSR 92-70-C - AHS Antriebstechnik GmbH
... The DSR modules are compact, microstep stepper drive modules, intended to drive 2-phase stepper motors. Different switch and jumper settings allow optimal adaption to the individual application. The units are designed for rack mount and own one 32-pin DIN 41612 strip connector for all electrical con ...
... The DSR modules are compact, microstep stepper drive modules, intended to drive 2-phase stepper motors. Different switch and jumper settings allow optimal adaption to the individual application. The units are designed for rack mount and own one 32-pin DIN 41612 strip connector for all electrical con ...
Workshop Attendee Notes
... electricity generation, namely: 1) A closed coil, and 2) A changing magnetic field inside the closed coil (through the movement of the magnet inside the coil). If you use an oscilloscope to measure the current induced in the coil, you would see the picture to the right. As a group, discuss the reaso ...
... electricity generation, namely: 1) A closed coil, and 2) A changing magnetic field inside the closed coil (through the movement of the magnet inside the coil). If you use an oscilloscope to measure the current induced in the coil, you would see the picture to the right. As a group, discuss the reaso ...
chapter 2 switched reluctance motor and its application
... torque in the direction of increasing inductance. When the phase is energized in the minimum inductance position, the rotor tends to attain the forthcoming position of maximum inductance. This movement is defined by the magnetization characteristics of the motor. A typical current profile for a cons ...
... torque in the direction of increasing inductance. When the phase is energized in the minimum inductance position, the rotor tends to attain the forthcoming position of maximum inductance. This movement is defined by the magnetization characteristics of the motor. A typical current profile for a cons ...
Charging Systems - Linn–Benton Community College
... Practice with Diode Patterns • Different alternator diodes give slightly different diode patterns • If you look at many different alternator diode patterns you will learn to quickly spot bad diodes • Defective diodes can cause many engine performance problems ...
... Practice with Diode Patterns • Different alternator diodes give slightly different diode patterns • If you look at many different alternator diode patterns you will learn to quickly spot bad diodes • Defective diodes can cause many engine performance problems ...
Sensorless six-step BLDC commutation
... stationary, until it is moved away from the zero torque position. The maximum torque is produced when the rotor is at 90 or 270 degrees. Generally we want the motor to produce a relatively constant torque per amp of current applied and this clearly cannot be achieved by just energizing AB. If we wan ...
... stationary, until it is moved away from the zero torque position. The maximum torque is produced when the rotor is at 90 or 270 degrees. Generally we want the motor to produce a relatively constant torque per amp of current applied and this clearly cannot be achieved by just energizing AB. If we wan ...
AC drive
... A motor’s load capacity curves with an AC drive If the motor is driven without a frequency converter, its load capacity curves cannot be modified. It will produce a specified torque at certain speed and maximum torque cannot be exceeded. With a frequency converter drive, there are different loading ...
... A motor’s load capacity curves with an AC drive If the motor is driven without a frequency converter, its load capacity curves cannot be modified. It will produce a specified torque at certain speed and maximum torque cannot be exceeded. With a frequency converter drive, there are different loading ...
Speed Control of Induction Machines
... where N is the number of the turns per phase, φm is the peak flux in the air gap and f is the frequency. Note that in order to reduce the speed, frequency has to be reduced. If the frequency is reduced while the voltage is kept constant, thereby requiring the amplitude of induced emf to remain the s ...
... where N is the number of the turns per phase, φm is the peak flux in the air gap and f is the frequency. Note that in order to reduce the speed, frequency has to be reduced. If the frequency is reduced while the voltage is kept constant, thereby requiring the amplitude of induced emf to remain the s ...
Analysis of energy-saving structures of electric machines for
... tested at supply voltage equaling U = 230 V AC. Figs. 5–6 show the dependence of speed n (Fig. 5) and efficiency (Fig. 6) on the function of the load torque TL . ...
... tested at supply voltage equaling U = 230 V AC. Figs. 5–6 show the dependence of speed n (Fig. 5) and efficiency (Fig. 6) on the function of the load torque TL . ...
AC motor
An AC motor is an electric motor driven by an alternating current (AC). The AC motor commonly consists of two basic parts, an outside stationary stator having coils supplied with alternating current to produce a rotating magnetic field, and an inside rotor attached to the output shaft producing a second rotating magnetic field. The rotor magnetic field may be produced by permanent magnets, reluctance saliency, or DC or AC electrical windings.Less commonly, linear AC motors operate on similar principles as rotating motors but have their stationary and moving parts arranged in a straight line configuration, producing linear motion instead of rotation.