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induction motor stator resistance estimation using pi estimator
... the excellent performance of the estimator. The principle of the estimator can be extended to rotor-resistance estimation. The stator-resistance estimation exemplifies possibly one of the best applications of fuzzy logic. To prove that the induction motor stator and rotor temperature can be gain and ...
... the excellent performance of the estimator. The principle of the estimator can be extended to rotor-resistance estimation. The stator-resistance estimation exemplifies possibly one of the best applications of fuzzy logic. To prove that the induction motor stator and rotor temperature can be gain and ...
Sample Investigation
... Students measure the current and voltage used by the motor when it is spinning and when it is held in place. They construct several different motor designs with varying numbers of permanent magnets and electromagnets. The power consumed by the motor for each design is calculated and compared. ...
... Students measure the current and voltage used by the motor when it is spinning and when it is held in place. They construct several different motor designs with varying numbers of permanent magnets and electromagnets. The power consumed by the motor for each design is calculated and compared. ...
Monitoring technique
... nominal current is important, but also the much higher starting current. The overload characteristic of the current input allows to connect motors with nominal current up to 4..5 A depending on the starting conditions. This is at 3 AC 400 V a motor load of 1.5 … 2.2 kW. It is important that the moto ...
... nominal current is important, but also the much higher starting current. The overload characteristic of the current input allows to connect motors with nominal current up to 4..5 A depending on the starting conditions. This is at 3 AC 400 V a motor load of 1.5 … 2.2 kW. It is important that the moto ...
Speed Control for DC motor
... in the pole. Neutral axis is therefore shifted in the direction of motion. The result is current flow circulating between the shorted segments and large sparks at the brushes. The ending result is arcing and sparking at the brushes. ...
... in the pole. Neutral axis is therefore shifted in the direction of motion. The result is current flow circulating between the shorted segments and large sparks at the brushes. The ending result is arcing and sparking at the brushes. ...
ENG H191 Hands-on Lab Lab 7: Motors Introduction
... Electric motors convert electrical energy into rotary motion. This conversion of energy is not direct. Magnetism is the intermediate stage. Electrical current produces a magnetic field that attracts or repels another magnetic field, (possibly a permanent magnet) which causes rotation. A motor achiev ...
... Electric motors convert electrical energy into rotary motion. This conversion of energy is not direct. Magnetism is the intermediate stage. Electrical current produces a magnetic field that attracts or repels another magnetic field, (possibly a permanent magnet) which causes rotation. A motor achiev ...
Comparison Study of Singly-Fed Electric Machine with Doubly
... and size larger than that of an IPM motor. It is also to be noted that below synchronous speed, a cage IM can only be in motoring mode and above, generating mode. An IPM cross-section and driving characteristics in terms of iq and id components are shown in Fig. 2 a) and b). Due to the strong magnet ...
... and size larger than that of an IPM motor. It is also to be noted that below synchronous speed, a cage IM can only be in motoring mode and above, generating mode. An IPM cross-section and driving characteristics in terms of iq and id components are shown in Fig. 2 a) and b). Due to the strong magnet ...
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. ...
Lab 8 - Rose
... 2. Measure the output torque, efficiency, input current, input power factor, input power, and output power of a three-phase induction motor as a function of the rotor speed 3. Display the transient starting current of a three-phase induction motor on the storage oscilloscope and understand its signi ...
... 2. Measure the output torque, efficiency, input current, input power factor, input power, and output power of a three-phase induction motor as a function of the rotor speed 3. Display the transient starting current of a three-phase induction motor on the storage oscilloscope and understand its signi ...
Static characteristics of a new doubly salient permanent magnet motor
... of cross-coupling between the PM flux and armature flux on inductances is firstly taken into account. The results indicate that the effect of the cross-coupling and the mutual inductance in the DSPM motor are significant and nonnegligible. Both the inductance-flux method and the flux-current diagram ...
... of cross-coupling between the PM flux and armature flux on inductances is firstly taken into account. The results indicate that the effect of the cross-coupling and the mutual inductance in the DSPM motor are significant and nonnegligible. Both the inductance-flux method and the flux-current diagram ...
New Electric Reluctance Motor with Bulk Superconducting Materials
... machine can be attained. Pre-magnetisation of these rotors by field cooling is explained and this process gives a mechanical output power 4 to 5 times better than that of a conventional reluctance machine. 1 Introduction Conventional reluctance motor theory is nowadays very well known [1]. Due to th ...
... machine can be attained. Pre-magnetisation of these rotors by field cooling is explained and this process gives a mechanical output power 4 to 5 times better than that of a conventional reluctance machine. 1 Introduction Conventional reluctance motor theory is nowadays very well known [1]. Due to th ...
starters and circle diagram for Induction motor File
... In this method the stator is provided with two separate windings which are wound for two different pole numbers. One winding is energized at a time. Suppose that a motor has two windings for 6 and 4 poles. For 50 Hz supply the synchronous speed will be 1000 and 1500 rpm respectively. If the full loa ...
... In this method the stator is provided with two separate windings which are wound for two different pole numbers. One winding is energized at a time. Suppose that a motor has two windings for 6 and 4 poles. For 50 Hz supply the synchronous speed will be 1000 and 1500 rpm respectively. If the full loa ...
I. Introduction
... control of PMSM with PI and Adapted fuzzy based speed control using flux weakening operation. In this method with having advantages in permanent magnet synchronous machine (PMSM) drive can utilization and widen flux weakening region the maximum utilization of inverter output regulated current satura ...
... control of PMSM with PI and Adapted fuzzy based speed control using flux weakening operation. In this method with having advantages in permanent magnet synchronous machine (PMSM) drive can utilization and widen flux weakening region the maximum utilization of inverter output regulated current satura ...
Commutator (electric)
![](https://commons.wikimedia.org/wiki/Special:FilePath/Universal_motor_commutator.jpg?width=300)
A commutator is the moving part of a rotary electrical switch in certain types of electric motors and electrical generators that periodically reverses the current direction between the rotor and the external circuit. It consists of a cylinder composed of multiple metal contact segments on the rotating armature of the machine. The commutator is one component of a motor; there are also two or more stationary electrical contacts called ""brushes"" made of a soft conductor like carbon press against the commutator, making sliding contact with successive segments of the commutator as it rotates. The windings (coils of wire) on the armature are connected to the commutator segments. Commutators are used in direct current (DC) machines: dynamos (DC generators) and many DC motors as well as universal motors. In a motor the commutator applies electric current to the windings. By reversing the current direction in the rotating windings each half turn, a steady rotating force (torque) is produced. In a generator the commutator picks off the current generated in the windings, reversing the direction of the current with each half turn, serving as a mechanical rectifier to convert the alternating current from the windings to unidirectional direct current in the external load circuit. The first direct current commutator-type machine, the dynamo, was built by Hippolyte Pixii in 1832, based on a suggestion by André-Marie Ampère. Commutators are relatively inefficient, and also require periodic maintenance such as brush replacement. Therefore, commutated machines are declining in use, being replaced by alternating current (AC) machines, and in recent years by brushless DC motors which use semiconductor switches.