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2024
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About magnetic field strength
Electric motors are a general term for electric motors and generators, usually divided into two categories: DC motors and AC motors. AC motors are divided into asynchronous motors and synchronous motors.
What is magnetic field strength?
Answer: The magnetic field strength of an infinitely long wire carrying 1 ampere of current at a distance of 1/2 meter from the wire is defined as 1A/m (Ampere per meter, International System of Units SI); In the CGS unit system (centimeter gram second), to commemorate Oersted's contribution to electromagnetics, the magnetic field strength of an infinitely long wire carrying 1 ampere of current at a distance of 0.2 centimeters from the wire is defined as 10e (Oersted), 10E=1/4.103/m, and the magnetic field strength is usually represented by H.
What is Ampere's rule?
Answer: Hold the wire with your right hand and align the direction of the extended thumb with the direction of the current. Then, the direction pointed by the bent four fingers is the direction in which the magnetic induction wire wraps around.
What is magnetic flux?
Answer: Magnetic flux, also known as magnetic flux, is a plane perpendicular to the direction of a uniform magnetic field. The magnetic induction intensity of the field is B, and the area of the plane is S. We define the product of the magnetic induction intensity B and the area S as the magnetic flux passing through this plane.
What is a carbon brush?
Answer: The brush motor is placed on the surface of the inverter. When the motor rotates, it delivers electrical energy to the coil through the inverter. Due to its main component being carbon, it is called a carbon brush and is prone to wear and tear. Regular maintenance and replacement should be carried out, and carbon deposits should be cleaned.
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