EC fan is a new product in the fan industry. It is different from other DC fans. It can not only use DC voltage power supply, but also AC voltage power supply. Voltage from DC 12v, 24v, 48v, to AC 110V, 380V can be universal, no need to add any inverter conversion. All motors with zero internal components are DC power supply, built-in DC to AC, rotor position feedback, three-phase AC, permanent magnet, synchronous motors.
Advantages of EC fans:
EC motor is a DC brushless maintenance-free motor with a built-in intelligent control module. It comes with RS485 output interface, 0-10V sensor output interface, 4-20mA speed control switch output interface, alarm device output interface and master-slave signal output interface. The product has the characteristics of high intelligence, high energy saving, high efficiency, long life, low vibration, low noise and continuous and uninterrupted work:
The brushless DC motor has greatly simplified the structure because the collector ring and brushes for excitation are omitted. At the same time, not only the manufacturability of the motor is improved, but the mechanical reliability of the motor operation is greatly enhanced, and the service life is increased.
At the same time, the air gap magnetic density can be greatly improved, and the motor index can achieve the best design. The direct effect is that the motor volume is reduced and the weight is reduced. Not only that, compared with other motors, it also has very excellent control performance. This is because: First, due to the high performance of permanent magnet materials, the torque constant, torque inertia ratio, and power density of the motor are greatly improved. Through reasonable design, indexes such as moment of inertia, electrical and mechanical time constants can be greatly reduced, as the main indexes of servo control performance have been greatly improved. Secondly, the design of modern permanent magnet magnetic circuit is relatively complete, and the coercivity of permanent magnet material is high, so the anti-armature reaction and anti-demagnetization ability of permanent magnet motor is greatly enhanced. The influence of disturbance is greatly reduced. Third, because permanent magnets are used instead of electric excitation, the design of the excitation winding and the excitation magnetic field is reduced, and many parameters such as excitation flux, excitation winding inductance, and excitation current are reduced, thereby directly reducing controllable variables or parameters. Based on the above factors, it can be said that the permanent magnet motor has excellent controllability.
Post time: Sep-24-2020