The term, 'saturation', applies to all ferromagnetic materials including the magnetic circuits used in machines. Saturation refers to a situation where a material's magnetic field has achieved its maximum intensity.
If a length of insulated wire is wound around a ferromagnetic material, and a current passed through it, that material will become magnetised. In the case of 'soft' materials, such as iron, this is only temporary and will disappear (almost) when the current is switched off. But with 'hard' materials, such as steel, the magnetism will be retained. In this sense, the terms 'soft' and 'hard' refer to the magnetic properties of the material, and not the literal sense!
So, when current is passed through the wire, we end up with what is called a magnetic field strength (symbol: H), defined in terms of the magnetomotive force (current times the number of turns) per unit length (in metres) for the magnetic circuit, and expressed in amperes per metre (usually spoken as 'ampere-turns per metre'). If the current is increased, then the intensity of the resulting magnetic field, i.e. its magnetic flux density (symbol: B) will also increase. But it will not increase indefinitely, rather it will reach a point called 'saturation' at which point any further increase in magnetic field strength will result in absolutely no further increase in the flux density of the field. This is the point at which saturationhas been reached.
If you think of a ferromagnetic material being made up of billions of molecules which behave like tiny, individual magnets (we call these 'domains'), in the unmagnetised state these are chaotically orientated and, so, the material is unmagnetised. When magnetised, these domains align in a north-south direction and, once aligned, the material has reached its maximum flux density and we say that it is 'saturated'.
Either the break in the circuit or loss magnetic strength of the magnet - can result into no generation
number of conductors speed magnitude of the magnetic flux
The purpose of the permanent magnet in the moving coil meter is to measure electrical current. The coil will have a magnetic field which will react to the magnetic field of the permanent magnet. Since opposite poles attract, it will cause for the coil to move.Ê
d-q a direct (magnet pole) and quadrature (90deg out of phase electrically) axis. This is identical to surface permanent magnet machine (SPM).
To vary the speed of a permanent magnet synchronous motor, you need to vary the frequency of the AC power source. Of course, this also means you need to vary the voltage because the power factor is going to change, and you need to compensate for that or you might damage the motor.
yes - need to run electricity through it to make it a linear magnetic generator.
PMG permanent magnet generator is used for excitation or rotor in altrnator
Although it can be difficult to find, it is possible to purchase a permanent magnet generator from auction sites such as eBay. Also, look at private persons through classifieds that build such devices and often sell them for a fair price.
Either the break in the circuit or loss magnetic strength of the magnet - can result into no generation
Yes you can turn a motor into a generator, if it is a permanent magnet motor.
A motor with permanent magnets rather than field coilsA:A non-functional contraption often peddled as a free-energy generator.
since the magnet are place in north and north direction or south and south direction, the magnet will continue to loose it magnetic force of attraction. for more question call me on 2348133605375.
Coils of insulated wire, a permanent magnet, and a galvanometer. Hope thus helped!
The vehicle speed sensor is a permanent magnet generator mounted on the transaxle case
The vehicle speed sensor is a permanent magnet generator mounted on the transaxle case
G.C Cavadias has written: 'Dynamic braking of a permanent magnet wind turbine generator'
I really don't know. :D