CHOICE & CALCULATION OF THE POWER FACTOR CORRECTION?
Calculating the dimensions of the capacitor bank you need to install in your system is very simple: note the cos of the system without power factor correction and the cos you want to obtain and it will take just a few calculations to derive the reactive power necessary in order to reach the desired power factor. The power factor can differ greatly between two users because it depends both on the type of equipment installed and how it is used. For example, asynchronous motors – by far the most widely used, though brushless motors actuated by static AC/DC or AC/AC converters have been gaining popularity in recent years – have a power factor that varies greatly according to the motor load and type of construction and can reach very low values in the absence of loads. Similar observations may be made with respect to transformers. For all these types of electric machines, recourse is often made to a fixed power factor correction at the motor or transformer level. Other significant differenc
