IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... Now a day’s mostly the voltage source inverter fed induction motors are used in many applications. For medium voltage applications like underground mines, electrical submergible pumps and ventilating pumps with high length of feeder the voltage source inverter fed drives are incurs many problems. Th ...
... Now a day’s mostly the voltage source inverter fed induction motors are used in many applications. For medium voltage applications like underground mines, electrical submergible pumps and ventilating pumps with high length of feeder the voltage source inverter fed drives are incurs many problems. Th ...
Variable Inductance Transducers
... • Since the two secondary windings are connected in series opposition, when the core is at the centre the output is zero (null position) • In the linear operating range o/p voltage is proportional to the core displacement • It provides magnitude as well as the direction. Direction can be obtained by ...
... • Since the two secondary windings are connected in series opposition, when the core is at the centre the output is zero (null position) • In the linear operating range o/p voltage is proportional to the core displacement • It provides magnitude as well as the direction. Direction can be obtained by ...
from archives-ouvertes.fr - Supelec
... EV motors have a high torque-to-volume ratio and a wide speed operation range [8]. Consequently, these motors are characterized by their low inductance and high current density, so that they run at high speed and produce a high starting torque. Due to the low-inductance coil design, the current ripp ...
... EV motors have a high torque-to-volume ratio and a wide speed operation range [8]. Consequently, these motors are characterized by their low inductance and high current density, so that they run at high speed and produce a high starting torque. Due to the low-inductance coil design, the current ripp ...
Mixer or Sewing Machine Motor Speed Control
... be successful. But - if the loop is still open - the attempt will fail - and the alarm will re-activate. Of course - you can turn the Siren off at any time by switching off the alarm. A conventional bell uses up to about 400ma. An electronic siren generally uses less. If you intend to draw a heavier ...
... be successful. But - if the loop is still open - the attempt will fail - and the alarm will re-activate. Of course - you can turn the Siren off at any time by switching off the alarm. A conventional bell uses up to about 400ma. An electronic siren generally uses less. If you intend to draw a heavier ...
DC-machines
... adding a variable resistance in series with the armature Potential divider control : If the speed control from zero to the rated speed is required , by rheostatic method then the voltage across the armature can be varied by connecting rheostat in a potential divider arrangement . ...
... adding a variable resistance in series with the armature Potential divider control : If the speed control from zero to the rated speed is required , by rheostatic method then the voltage across the armature can be varied by connecting rheostat in a potential divider arrangement . ...
EE 448
... resilient rubber mounting, are never totally effective in eliminating this vibration, particularly when the motor is directly coupled to a large resonant-prone fan. The capacitor run motor is very useful in this type of application because the motor can be designed to have low vibration under full-l ...
... resilient rubber mounting, are never totally effective in eliminating this vibration, particularly when the motor is directly coupled to a large resonant-prone fan. The capacitor run motor is very useful in this type of application because the motor can be designed to have low vibration under full-l ...
Induction Motor - ENCON - Department of ENergy CONversion
... decreases to standstill when the slip is unity. • At synchronous speed, torque is almost zero. • At standstill, torque is not too high, but the current is very high. Thus the VA requirement of the IM is several times than the full load. Not economic to operate at this condition. • Only at “low slip” ...
... decreases to standstill when the slip is unity. • At synchronous speed, torque is almost zero. • At standstill, torque is not too high, but the current is very high. Thus the VA requirement of the IM is several times than the full load. Not economic to operate at this condition. • Only at “low slip” ...
Electromagnetic compatibility consideration and
... band allocated for communications, or if these switching frequencies are close to possible network resonance points. • Always consider harmonic resonance, even when applying small power rated equipment with power electronics. High harmonic order resonances can be especially troublesome, because of s ...
... band allocated for communications, or if these switching frequencies are close to possible network resonance points. • Always consider harmonic resonance, even when applying small power rated equipment with power electronics. High harmonic order resonances can be especially troublesome, because of s ...
BO35377383
... BLDC motors are very popular in a wide array of applications. Permanent magnet brushless (PMBL) motors can be considered a kind of three phase synchronous motor; they are well driven by dc voltage having permanent magnets on the rotor, replacing the mechanical commutator and brush gear. The commutat ...
... BLDC motors are very popular in a wide array of applications. Permanent magnet brushless (PMBL) motors can be considered a kind of three phase synchronous motor; they are well driven by dc voltage having permanent magnets on the rotor, replacing the mechanical commutator and brush gear. The commutat ...
dynamic model of pm synchronous motors
... variables are discussed in relation to the physical 3 phase entities. Moreover, the paper suggests methods of obtaining complete model parameters from simple laboratory tests. Due to the lack of developed procedures in the past, obtaining model parameters were very difficult and uncertain, because s ...
... variables are discussed in relation to the physical 3 phase entities. Moreover, the paper suggests methods of obtaining complete model parameters from simple laboratory tests. Due to the lack of developed procedures in the past, obtaining model parameters were very difficult and uncertain, because s ...
servo control facts
... given load. Also, note that this category of motor is not self starting and employs start windings (split-phase, capacitor start), or controls which slowly ramp up frequency/voltage in order to start ...
... given load. Also, note that this category of motor is not self starting and employs start windings (split-phase, capacitor start), or controls which slowly ramp up frequency/voltage in order to start ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... motors. Some of them are better speed versus torque characteristics, high dynamic response, high efficiency, long operating life, noiseless operation, higher speed ranges. The ratio of torque delivered to the size of the motor is higher, making it useful in applications where space and weight are cr ...
... motors. Some of them are better speed versus torque characteristics, high dynamic response, high efficiency, long operating life, noiseless operation, higher speed ranges. The ratio of torque delivered to the size of the motor is higher, making it useful in applications where space and weight are cr ...
ert 457 – design of automation systems
... Single-phase motors tend to be use for low-power requirements while polyphase motors are used for higher powers. Induction motors tend to be cheaper than synchronous motors and are thus very widely used. ...
... Single-phase motors tend to be use for low-power requirements while polyphase motors are used for higher powers. Induction motors tend to be cheaper than synchronous motors and are thus very widely used. ...
Document
... Type of Electric Motors AC Motors – Synchronous motor • Constant speed fixed by system frequency • DC for excitation and low starting torque: suited for low load applications • Can improve power factor: suited for high electricity use systems • Synchronous speed (Ns): Ns = 120 f / P ...
... Type of Electric Motors AC Motors – Synchronous motor • Constant speed fixed by system frequency • DC for excitation and low starting torque: suited for low load applications • Can improve power factor: suited for high electricity use systems • Synchronous speed (Ns): Ns = 120 f / P ...
BAC 800-72-70 - Accelerated Systems
... The ASi BAC Ne 800 is a high power density electric bike controller that utilizes the latest in sinusoidal field oriented control to ensure smooth and quiet brushless DC motor operation and efficient vehicle operation. ...
... The ASi BAC Ne 800 is a high power density electric bike controller that utilizes the latest in sinusoidal field oriented control to ensure smooth and quiet brushless DC motor operation and efficient vehicle operation. ...
Overview of motors and motion control
... Stepper motors consist of a doubly salient structure (teeth on both the rotor and stator) and are used primarily in applications requiring precise position control which cannot justify the cost of expensive position feedback sensors. Stepper motors are a fairly new motor type, designed as a replacem ...
... Stepper motors consist of a doubly salient structure (teeth on both the rotor and stator) and are used primarily in applications requiring precise position control which cannot justify the cost of expensive position feedback sensors. Stepper motors are a fairly new motor type, designed as a replacem ...
SPEED CONTROL of SHUNT DC MOTOR
... SPEED CONTROL of SHUNT DC MOTOR • In previous figure (b) terminal characteristic of motor over full range from no-load to stall shown • In figure can see at very slow speeds, an increase in field resistance will actually decrease speed of motor • This effect occurs because at very low speeds, the i ...
... SPEED CONTROL of SHUNT DC MOTOR • In previous figure (b) terminal characteristic of motor over full range from no-load to stall shown • In figure can see at very slow speeds, an increase in field resistance will actually decrease speed of motor • This effect occurs because at very low speeds, the i ...
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.