Method and apparatus for water-cooling power modules in an induction calendering control actuator system used on web manufacturing processes

An induction heating system used on web manufacturing processes has one or more workcoils each with an associated power module. The power modules are cooled using water. In one embodiment the power modules and the workcoils are in physical contact with a full width water cooled support beam. In another embodiment the key heat generating elements of the power modules are mounted against a thermally conductive power module frame which is then mounted against the thermally conductive wall of an un-perforated water header.