Voltage instability will affect the normal operation of the gear motor, in order to make the cement mill gearbox work efficiently, we can stabilize the voltage by the following methods:
1. Reducing the resistance of the motor at both ends in parallel with a suitable resistive load, the use of resistive load in the heat after the resistance becomes non-linear resistance characteristics, so that the field resistance and excitation characteristics of the initial section of a larger angle, A significant intersection with the no-load characteristic curve, so that the motor at a lower voltage will also have a stable operating point.
2. In the pole pole under the shoe into the benign material, reducing the magnetic field gap, it can make it in the smaller excitation current when the output characteristics of saturation, so that its output voltage to stabilize.
3. Using the generator automatic excitation adjustment device, because it has a good excitation characteristics, with constant reactive power, constant power factor and other adjustment methods to improve the system stability and transient response capability is very effective.