echnological advantages

CLK is self-locking

CLK self-locking speed control is adopted, which can meet the demand of speed fluctuation of less than 1/10,000 of high-speed fans

Parameter identification

With the improved low-speed observer, only a single parameter needs to be debugged for start-up, which can meet the requirements of different motors, loads and schemes for start-up reliability

Debug-free algorithms

Offline parameter identification, the identification error is not more than 10%, and with the low-speed observer, a single program can be compatible with all motors of the same series.

Online parameter identification, real-time monitoring of motor parameters, estimation of the actual temperature to achieve real-time temperature monitoring and protection

Solve the problem that the factory test motor cannot measure the motor parameters due to the lack of LCR digital bridge equipment

Negative current headwind

Cooling fans have a high demand for headwinds, and traditional braking methods cannot meet the needs of full-speed headwinds

Fengzhao adopts the control method of upwind braking, which can achieve the effect of full-speed braking under the condition of safe current

Efficiency adaptive

Cooling fans usually have high requirements for efficiency, and the way to find the zero-crossing point and degree angle alignment of the back EMF by opening the window solves the complex process of program matching efficiency and improves the debugging efficiency

Dual control mode

Non-full-speed F0C control, full-speed F0C square wave cutting dual control mode, reduce the carrier at full speed to achieve the effect of reducing temperature rise and improving service life