WIPO IPC: Internet Publication
... In the two cases referred to under (a), above, the subclasses of section F, which deal with the respective subjects, essentially cover in the first place the whole mechanical aspect of the apparatus or devices, whereas the electrical aspect, as such, is covered by subclass H05B; In the case of l ...
... In the two cases referred to under (a), above, the subclasses of section F, which deal with the respective subjects, essentially cover in the first place the whole mechanical aspect of the apparatus or devices, whereas the electrical aspect, as such, is covered by subclass H05B; In the case of l ...
MAGNETIC EFFECTS OF CURRENT
... in the magnetic field between the poles of a horse shoe type magnet. When the coil rotates, it cuts the lines of magnetic force, due to which a current is induced in the generator coil. This current can be used to run various electrical appliances. Construction Of D.C. Generator A simple D.C. Genera ...
... in the magnetic field between the poles of a horse shoe type magnet. When the coil rotates, it cuts the lines of magnetic force, due to which a current is induced in the generator coil. This current can be used to run various electrical appliances. Construction Of D.C. Generator A simple D.C. Genera ...
apt™ Modular Stepper Motor Driver Rack System See
... effect, but because the flow is in the opposite direction with respect to the magnetic field, the force is in the downward direction. Both forces are of equal magnitude. At 180 degrees, the same phenomenon occurs, but segment A-B is forced down and C-D is forced up. In the 90 and 270-degree position ...
... effect, but because the flow is in the opposite direction with respect to the magnetic field, the force is in the downward direction. Both forces are of equal magnitude. At 180 degrees, the same phenomenon occurs, but segment A-B is forced down and C-D is forced up. In the 90 and 270-degree position ...
Interactive computer aided design of permanent magnet DC motors
... given in (5) is no longer valid, and an iterative technique must their highly nonlinear demagnetization characteristics and low be used in order to solve the magnetic circuit. coercivities give them a low resistance to demagnetization.The Specijc Electric Loading (Qj: The specific electric loading e ...
... given in (5) is no longer valid, and an iterative technique must their highly nonlinear demagnetization characteristics and low be used in order to solve the magnetic circuit. coercivities give them a low resistance to demagnetization.The Specijc Electric Loading (Qj: The specific electric loading e ...
ECE320 Chapter 6
... currents, voltages are induced in them. If the rotor were to stand still, then the induced voltages would be very similar to those induced in the stator windings. In the case of a squirrel cage rotor, the voltage induced in a bar will be slightly out of phase with the voltage in the next bar, since ...
... currents, voltages are induced in them. If the rotor were to stand still, then the induced voltages would be very similar to those induced in the stator windings. In the case of a squirrel cage rotor, the voltage induced in a bar will be slightly out of phase with the voltage in the next bar, since ...
File
... 3. What are the various applications of stator voltage control scheme? The stator voltage control method is suitable for applications where torque demand reduces with speed, which points towards its suitability for Fan Pump drives ...
... 3. What are the various applications of stator voltage control scheme? The stator voltage control method is suitable for applications where torque demand reduces with speed, which points towards its suitability for Fan Pump drives ...
In this mode the PW is connected to the grid and the CW is short
... potential to be employed as a variable speed generator such as in wind power applications or as a motor in adjustable speed drives [1] [2] [4]. The BDFM consists of two electrically independent balanced three phase windings which have no mutual couplings and wound on the same core in the stator. The ...
... potential to be employed as a variable speed generator such as in wind power applications or as a motor in adjustable speed drives [1] [2] [4]. The BDFM consists of two electrically independent balanced three phase windings which have no mutual couplings and wound on the same core in the stator. The ...
dsp based implementation of field oriented control of three
... Index Terms: digital signal processor, field oriented control, induction motor, Space Vector Pulse Width Modulation -----------------------------------------------------------------------***----------------------------------------------------------------------1. INTRODUCTION Induction motors are wid ...
... Index Terms: digital signal processor, field oriented control, induction motor, Space Vector Pulse Width Modulation -----------------------------------------------------------------------***----------------------------------------------------------------------1. INTRODUCTION Induction motors are wid ...
Lecture-4: Modeling Real World Systems - Dr. Imtiaz Hussain
... • Another method is to vary the flux per pole of the motor. • The first method involve adjusting the motor’s armature while the latter method involves adjusting the motor field. These methods are referred to as “armature control” and “field control.” ...
... • Another method is to vary the flux per pole of the motor. • The first method involve adjusting the motor’s armature while the latter method involves adjusting the motor field. These methods are referred to as “armature control” and “field control.” ...
AC motor
... machines and dishwashers or in other small household appliances. In this motor, small single-turn copper "shading coils" create the moving magnetic field. Part of each pole is encircled by a copper coil or strap; the induced current in the strap opposes the change of flux through the coil. This caus ...
... machines and dishwashers or in other small household appliances. In this motor, small single-turn copper "shading coils" create the moving magnetic field. Part of each pole is encircled by a copper coil or strap; the induced current in the strap opposes the change of flux through the coil. This caus ...
2011 Efficient Multiphysics Analysis of Drum Rollers Mircea Popescu INDUCTICA TECHNICAL CONFERENCE
... It is obvious that electromagnetic, thermal and mechanic aspects, all of them coupled by the electric motor model, have to be considered. The necessary complexity of the sub-models differs. While the mechanic load could be described by relatively simple equations, the electro-magnetic motor model i ...
... It is obvious that electromagnetic, thermal and mechanic aspects, all of them coupled by the electric motor model, have to be considered. The necessary complexity of the sub-models differs. While the mechanic load could be described by relatively simple equations, the electro-magnetic motor model i ...
- SlideBoom
... A.C. armature windings are always of the nonsalient-pole type and are usually symmetrically distributed in slots around the complete circumference of the armature. A.C. armature windings are generally open-circuit type i.e., both ends are brought out. An open-circuit winding is one that does not clo ...
... A.C. armature windings are always of the nonsalient-pole type and are usually symmetrically distributed in slots around the complete circumference of the armature. A.C. armature windings are generally open-circuit type i.e., both ends are brought out. An open-circuit winding is one that does not clo ...
Modeling of the Starting Performance of Large Solid-Pole Synchronous
... pole motors are a special category of large motors that are very popular in industrial systems. The solid pole is made of solid pieces of forged steel, which provides high mechanical strength for high speed rotating equipments. Compared to the traditional synchronous motors with laminated rotors, wh ...
... pole motors are a special category of large motors that are very popular in industrial systems. The solid pole is made of solid pieces of forged steel, which provides high mechanical strength for high speed rotating equipments. Compared to the traditional synchronous motors with laminated rotors, wh ...
Technical Information Generator
... Don’t disconnect, fit or short circuit terminals when the engine is running and the generator working (voltage spikes lead to damage). Don’t measure voltage and electrical current by short circuit (voltage spike), use a volt and ammeter. ...
... Don’t disconnect, fit or short circuit terminals when the engine is running and the generator working (voltage spikes lead to damage). Don’t measure voltage and electrical current by short circuit (voltage spike), use a volt and ammeter. ...
Commutator (electric)
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.