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How do you determine the flux constant of a PMSM?
Flux linkage is determined by magnets. The constant flux (Wb) per pole pairs induced in the stator windings of the magnets. Flux established by the permanent magnets produce three trapezoidal back EMP waveforms.
When pole flux of dc motor is zero what is its speed?
when the pole flux is zero there is no induced emf in the armature conductor of dc machine as a result of this there is no back emf for controlling action so speed become dangerously high or we can say it will be infinite.
What are the characteristics of a magnetic flux?
all magnets have a north and south pole. opposite poles attract, like poles repel.
In a dc generator why does total flux per pole decrase if the load on the machine increases even thought the field current is constsn?
Due to armature reaction
Difference between flux linkage and flux leakage?
i) leakage flux is those flux which goes through the air and linkage flux is those flux whose go through the cell. ii)leakage flux is the loss at flux but linkage flu is warning flux. iii)leakage flux is cause of eddy current loss and linkage flux is case of copper loss.
What is the unit of flux per pole?
The unit of flux per pole is Weber (Wb).
What direction do magnetic flux lines travel from?
Magnetic flux lines travel from the north pole of a magnet to the south pole.
What is the direction of magnetic flux in a magnetic field?
The direction of magnetic flux in a magnetic field is from the north pole to the south pole.
How do you calculate the pole strength of a magnetic?
The pole strength of a magnetic can be calculated by measuring the magnetic flux that it produces and dividing it by the area of the pole face. The formula to calculate the pole strength is: Pole Strength = Magnetic Flux / Area of pole face.
Why is the pole shoe extended beyond the pole core?
Extending the pole shoe beyond the pole core helps to enhance the electromagnetic flux distribution and improve the performance of the electric machine by reducing losses and increasing efficiency. It also provides better support for the winding insulation and helps to reduce the magnetic leakage.
Where in a bar magnetic is the magnetic flux the strongest?
The magnetic flux of a magnet is strongest in its poles. There poles of a magnet are those points where the magnetic lines of force emanate and enter. The poles are termed as north and south. The north pole is also called the N-pole or the north-seeking pole. Consequently, the south pole may also be referred to as the S-pole or the south-seeking pole.
How do you determine the flux constant of a PMSM?
Flux linkage is determined by magnets. The constant flux (Wb) per pole pairs induced in the stator windings of the magnets. Flux established by the permanent magnets produce three trapezoidal back EMP waveforms.
When pole flux of dc motor is zero what is its speed?
when the pole flux is zero there is no induced emf in the armature conductor of dc machine as a result of this there is no back emf for controlling action so speed become dangerously high or we can say it will be infinite.
Which device that indicate the direction of the magnetic flux?
A compass is a device that indicates the direction of the magnetic flux. It aligns with the Earth's magnetic field and points towards the magnetic North Pole.
Why pole shoes are laminated in a dc machine?
they are used to protect windings to get down and spread the flux uniformly.
What is pole-shoe?
A pole shoe is a component in an electrical machine, often found in motors or generators, that forms part of the magnetic circuit to direct and shape the magnetic field. It helps concentrate and guide the magnetic flux produced by the machine's rotor or stator, enhancing its efficiency and performance.
How would you Explain magnetic pole strength?
Magnet has two poles. The Pole strength depends on flux that emanate from it. The pole strength is measured in Amp-m. If we know magnetic moment the pole strength can be calculated as magneticmoment/length of magnet
