EC fan, full name Electronically Commutated (or Electrical Commutation) Fan, is an electronically commutated fan. It is a centrifugal fan using a digital brushless DC external rotor motor (also known as a permanent magnet synchronous motor), or simply a centrifugal fan using an EC motor.
- Working principle
1) The motor of the EC fan is essentially a three-phase AC permanent magnet synchronous motor, which uses technologies such as rotor position feedback and built-in DC to AC conversion (through six inverter modules).
2) The motor power supply is a DC power supply, but inside the EC fan, the AC 220V can be converted into DC power through the power conversion module.
3) The EC fan also requires a speed adjustment signal, which is usually achieved through a control signal (such as a square wave or voltage signal). The higher the duty cycle of the square wave, or the voltage continues to rise, the faster the fan speed.
- Features and advantages
1) High intelligence: EC fans have built-in intelligent control modules, which can achieve precise control of parameters such as speed, air volume and pressure.
2) High energy saving: Due to the use of advanced electronic control technology and permanent magnet synchronous motor, EC fans can automatically adjust their working state according to actual needs, thereby achieving more efficient and energy-saving operation. Compared with AC fans, EC fans have lower energy consumption in long-term operation.
3) High efficiency: The motor of the EC fan has excellent controllability and can achieve high-efficiency operation.
4) Long life: Due to the use of brushless DC motors and advanced electronic control technology, the service life of EC fans is relatively long.
5) Low vibration and low noise: The noise and vibration generated by EC fans during operation are relatively small, and they have better silent performance. This makes EC fans have broad application prospects in air treatment, ventilation, refrigeration and other fields that require high silent performance.
- Application fields
EC fans are currently widely used in air treatment, ventilation, refrigeration, freezing equipment, fresh air systems and other fields. Its high intelligence, high energy saving, high efficiency, long life, low vibration and low noise make EC fans have significant advantages in these fields.
- Comparison with AC and DC fans
1) AC fan: driven by AC power, with stable and efficient performance, but with high power consumption and noise.
2) DC fan: driven by DC power, with more compact size and more energy-saving characteristics. However, an external speed regulator or PWM controller is required to adjust the speed and current of the motor, which is relatively complex to control and may increase costs.
3) EC fan: combines the advantages of AC fan and DC fan, with more intelligent, efficient and energy-saving characteristics. However, the manufacturing cost is relatively high. However, with the continuous advancement of technology and the gradual reduction of costs, the application prospects of EC fans in the future will be broader.
EC fans, as a new type of fan, are known for their high performance, high efficiency, high energy saving, as well as low vibration and low noise. Among them, EC motors play a pivotal role in the development of fans. Looking forward to the future, EC fans are expected to occupy a more prominent position in the fan market. If you want to learn more about “EC motors”, please feel free to contact our online customer service. X-TEAM brushless motors provide OEM and ODM services for a long time, aiming to meet the diverse needs of different customers.