The Types of FFU motors and Their Energy Efficiency Performance

The DC FFU motors uses a DC brushless motor, which achieves efficient energy conversion through EC (Electronically Commutated) technology, with an overall energy efficiency of over 85%. Its soft start and soft stop features can control the starting current to be 1/5 of that of an AC motor, avoiding grid impact.

The AC FFU motors is equipped with a traditional AC motor, with energy consumption being approximately 1.5 times higher than that of the DC type. The speed control methods include electronic speed control (step-less speed variation but with high noise) and variable voltage speed control (graded speed variation but with low noise), and the overall energy efficiency is usually below 50%.

In terms of control systems, the AC FFU motors has three speed control levels, requiring manual adjustment for each unit, resulting in low efficiency and limited control accuracy. The DC FFU motors is step-less speed control, allowing group control and adjusting the speed according to the amount of indoor particles. It has high operation efficiency and high control accuracy.

In terms of maintenance costs, the DC FFU motors has a streamlined structure, with an average fault-free operating time of over 50,000 hours, while the maintenance frequency of the AC motor is high, and the annual maintenance cost is 2.3 times that of the DC type.