What is the working principle of the DC cooling fan?
Release time:
2020-07-13
The working principle of the DC cooling fan: It is realized according to energy conversion, namely: electrical energy→electromagnetic energy→mechanical energy→kinetic energy. Its circuit principle is generally divided into various forms, the circuit used With, the performance of the fan will be different.
DC cooling fanThe working principle of: It is realized according to energy conversion, namely: electrical energy → electromagnetic energy → mechanical energy → kinetic energy. Its circuit principle is generally divided into various forms, the circuit used
With, the performance of the fan will be different.
The cooling fan uses the principle of electromagnetic induction and uses Hall induction components as synchronous detection devices to control a set of circuits, switch the order of winding energization, generate a rotating magnetic field, and realize electronic
Phase commutated mechatronic new fan. The cooling fan has a wide speed range, light weight, environmental protection and energy saving, controllability, reliability, environmental tolerance and economy, etc.
advantage, gradually replace other types of motors in the field of high performance, occupy a dominant position.
The cooling fan uses direct current to provide power for it. DC motor has two major components of the stator and rotor. There are magnetic poles on the stator (winding or permanent magnet), and the rotor has windings, which are working
After the personnel energize it, a magnetic field (magnetic pole) is also formed on the rotor. There is an angle between the magnetic poles of the stator and the rotor. Under the mutual attraction of the stator and rotor magnetic fields (between the N pole and the S pole), the motor rotates.
The cooling fan technician told us that by changing the position of the brush, the angle between the magnetic poles of the stator and the rotor can be changed (assuming that the magnetic poles of the stator are the starting side of the angle and the magnetic poles of the rotor are the other side,
The direction from the magnetic poles of the rotor to the magnetic poles of the stator is the direction of rotation of the motor). After this operation, the direction of rotation of the motor can be changed.
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