1, frequency conversion energy-saving:
In order to ensure the reliability of production, all kinds of production machinery are left with a certain margin when designing and using power drives. The motor cannot be operated under full load. Except for reaching the power drive requirements, the extra torque increases the consumption of active power, resulting in the waste of electrical energy. When the pressure is high, the operating speed of the motor can be reduced, making it at the same time as the constant voltage. Save energy.
When the motor speed changes from N1 to N2, the motor shaft power (P) changes as follows:
P2/P1 = (N2/N1)3, it can be seen that reducing the motor speed can achieve cubic energy-saving effect.
2, dynamic adjustment of energy saving:
Adapt quickly to load changes and supply maximum efficiency voltage. The frequency conversion governor is equipped with 5,000 times per second measurement and control output function in the software, which always maintains the high efficiency output of the motor.
3, save power through V/F function of frequency conversion itself:
In the case of ensuring the output torque of the motor, the V/F curve can be automatically adjusted. Reduce the output torque of the motor, reduce the input current, and achieve energy saving.
4, frequency conversion comes with soft-start energy saving:
When the motor is started at full voltage, the motor's starting torque needs to absorb 7 times the rated current of the motor from the power grid, and a large starting current is a waste of power, and the voltage fluctuation of the power grid is also greatly damaged, increasing the line loss and change. damage. After soft-start, the starting current can be from 0 - the rated current of the motor, reducing the impact of the starting current on the power grid, saving electricity costs, and reducing the impact of starting inertia on the speed of inertia of the equipment, prolonging the service life of the equipment.
5, improve power factor energy saving:
The motor generates moments from the stator windings and the rotor windings by electromagnetic action. Winding due to its inductive effect. For the grid, the impedance characteristic is inductive, and the motor absorbs a large amount of reactive power during operation, resulting in a very low power factor.
After adopting the frequency conversion energy-saving governor, its performance has become:
AC-- DC-AC, after the rectifier filter, the load characteristics have changed. The frequency conversion governor is resistive to the grid and has a high power factor that reduces reactive power losses.