I said EC cooling fan, there may be most little friends do not know what kind of cooling fan, dc cooling fan but if I say you must know, in fact, we said that usually said the EC cooling fan is dc cooling fan, but it is different from ordinary dc cooling fan, then here are possessing the cooling fan manufacturer by us'
Electronic technician for everybody about the knowledge of EC cooling fan and advantages: EC cooling fan's description: new varieties of EC cooling fan is the cooling fan industry, it is different from other dc cooling fan, it not only can use dc voltage power supply, but also can use ac voltage power supply.
Voltage from the dc 12 v, 24 v, 48 v, the ac 110 v, 380 v can be general, don't need to add any inverter transformation.
All internal components zero dc power supply, built-in dc ac motor as power, USES the rotor position feedback, three-phase ac, permanent magnet synchronous motor.
Advantages of EC cooling fan: EC of brushless dc motor for the built-in intelligent control module type WeiHuXing motor, output with RS485 interface, 0
, 4-10 v sensor output interface
20 ma speed switch output interface, alarm output interface and master-slave signal output interface.
The products with high intelligence, high energy saving, high efficiency, long life, small vibration, low noise and can work continuously uninterrupted characteristics such as: due to eliminating the excitation brushless dc motor with the collector ring and brush, in structure is greatly simplified.
At the same time not only improved the technology of motor, and the motor running mechanical reliability enhanced greatly, increase the service life.
Air gap flux density can be greatly improved at the same time, the motor index which can realize the best design, the direct effect is smaller motor, reduction in weight.
Not only that, compared with other motor, but also has very good control performance.
This is because: first, due to the high performance of permanent magnet motor constant torque, torque to inertia ratio and greatly improve the power density, etc.
Through the reasonable design and make the moment of inertia, electrical and mechanical time constant index is greatly reduced, as the main indicator of servo control performance has improved a lot.
Second, the modern permanent magnet magnetic circuit design has been more perfect, plus high coercive force of permanent magnet material, thus an armature reaction of permanent magnet motor and have also strengthened the ability of resistance to demagnetization, motor control parameters with the external disturbance affects greatly reduced.
Third, because of permanent magnets to replace the electric excitation, reduced the exciting winding and the design of the excitation magnetic field, and thus reduce the excitation flux, exciting winding inductance, excitation current, and many other parameters, thereby directly reducing the controllable variables or parameters.
Comprehensive above factors permanent magnet motor has excellent controllability, so to speak.
At present it has a lot of big capacity regulating fan air volume using frequency control of motor speed, this kind of frequency converter mainly rely on import, the price expensive.
Currently under 1 kw power rating of the fan, especially household air conditioning cooling fan etc for permanent magnet brushless dc motor drive, and make use of speed adjustment ways.
A great consumption of 1 ~ 10 kw power range of the fan, basic use induction motor drive, and USES the adjusting way of the opening of the tuyere air volume adjustment.
For the power within the scope of the fan, driven by permanent magnet brushless dc motor instead of induction motor drive has great superiority.
Above is the description and the advantages of the EC cooling fan, believe that, after seeing this article you for EC cooling fan should have a deeper understanding.
If there is little friends in don't know or understand, can come to our company consulting, we wen ling chi automotive air conditioning is a professional research and development manufacture radiator cooling fan, DC cooling fan, EC cooling fan, cooling fan and stent pressurization of the cooling fan technology companies, excellent products, fair prices, support free proofing, directly or indirectly and sample news fast.
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