An electric motor is an electromagnetic tool which turns electricity into energy for machines. This power of the machine is used to, for example, power up the blower, fan, pump, to move the compressor, lift material, and so on. The electric motors are also used at home (in mixers, electric drills, and fans) and in the industrial sector. The มอเตอร์ไฟฟ้า in the industrial world are often referred to as the “workhorses” of the industry because it is estimated that motors use about 70% of the total electrical load in the industry.
The Principle of Working Electric Motors
The working principle of an electric motor is basically the same for all types of motors in general:
Electric currents in the magnetic field will give force.
If the wire carrying the current is bent into a circle/loop, then both sides of the loop, that is, in the right corner of the magnetic field, will get the force in the opposite direction.
The pair of styles produces a torque to rotate the coil.
The motors have several loops on their dynamics to provide more uniform torque and the magnetic field is produced by an electromagnetic arrangement called a field coil.
In understanding a motor, it is important to understand what is meant by an electric motor load. Load refers to rotary/torque power output according to the speed required. Expenses can generally be categorized into three groups:
Constant torque load is a load where the demand for energy output varies with the speed of operation but the torque does not vary. Some of the examples of loads with constant torque are conveyors, rotary kilns, and pumps.
While the variety of torque loads are loads with a torque that varies with the speed of operation. A few examples of a variable torque load is a centrifugal and fan pump (torque varies as the square of speed).
A constant energy load is a load with a torque demand that changes and is inversely proportional to speed.