How can we improve the power factor of the intermediate frequency melting furnace ?
The power factor of the intermediate frequency melting furnace is 0.76 . The compensation cabinet capacitor used now cannot be put on, and the circuit breaker will trip.
The load characteristics of the intermediate frequency furnace are low power factor and high harmonic content. Therefore, while improving the power factor, we must also consider harmonic control.
Simply using a capacitor cabinet for power factor compensation, although it can improve the power factor, will cause the harmonics to be amplified, resulting in safety hazards of the entire electrical system.
For the reactive power compensation of the intermediate frequency melting furnace and the harmonic control, the best solution is to use a passive filter. Passive filters can be used to filter out harmonics as well as improve power factor.
In addition to passive filters, it is also conceivable to use a tuned filter for reactive compensation and an active filter for harmonic control. But such costs will be higher. Very simple , you can increase the capacitance compensation cabinet ! The capacitor compensation cabinet is mainly composed of circuit breaker , reactor , capacitor contactor and power factor control meter and instrument indicator . The capacity of the capacitor can be calculated by the formula , you can Find the capacitor compensation calculation formula online !
