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EC fan refers to a centrifugal fan with a digital brushless DC outer rotor motor or a centrifugal fan with an EC motor. EC motor power supply is DC power supply, built-in DC to AC, rotor position feedback, three-phase AC, permanent magnet and synchronous motor.
EC motor is a DC brushless maintenance-free motor with a built-in intelligent control module, 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. This product has the characteristics of high intelligence, high energy saving, high efficiency, long life, low vibration, low noise and continuous operation.
A Brushless DC motor is greatly simplified in structure because it omits the collector ring and brushes for excitation. At the same time, not only the manufacturability of the motor is improved, but also the mechanical reliability of the motor operation is greatly enhanced and the service life is prolonged.
At the same time, the air gap magnetic density can be greatly improved, and the motor index can achieve the best design, and its direct effect is to reduce the size and weight of the motor. Moreover, compared with other motors, it also has excellent control performance. This is because: firstly, the torque constant, torque inertia ratio and power density of the motor are greatly improved due to the high performance of permanent magnet materials. Through reasonable design, the indexes such as the moment of inertia, and electrical and mechanical time constants can be greatly reduced, which has been greatly improved as the main index of servo control performance. Secondly, the design of the modern permanent magnet magnetic circuit has been perfected, and the coercive force of permanent magnet material is high, so the anti-armature reaction and anti-demagnetization ability of the permanent magnet motor is greatly enhanced, and the control parameters of the motor are greatly reduced with the influence of external disturbance. Thirdly, because the permanent magnet is used to replace the electric excitation, the design of excitation winding and excitation magnetic field is reduced, so many parameters such as excitation magnetic flux, excitation winding inductance and excitation current are reduced, thus directly reducing controllable variables or parameters. Based on the above factors, it can be said that a permanent magnet motor has excellent controllability.
Hangzhou Jinjiu Electric Co., Ltd is a DC Fan Factory that also produces EC Fan Motor. welcome to visit our official website.