Medium frequency electric AC furnace

For many years, medium frequency generator sets were the only source of medium frequency power, and these rugged devices have not been completely replaced by solid state circuits.

They are still used worldwide as induction heating power sources. While thyristor inverters have entered the medium frequency power market in large numbers due to their higher efficiency, rotary motors should be carefully studied before abandoning them.

Medium frequency electric AC furnace

The user should consider the advantages of many years of trouble-free operation, low maintenance costs and good reliability of the motor generator set. The complexity of the solid state circuit device itself and its maintenance technology should also be carefully considered. In comparison, rotary generators require only routine maintenance of the bearings by less skilled personnel.

Even in the rare event of a major failure, they are easy to rewind. In addition, the experience of more than 40 years of use of the generator and heating load system should also be the basis for evaluating the equipment. Furthermore, most of the problems encountered with rotary electric machines have long been solved.