Frequency converters

ATE manufactures and uses in its systems a range of static frequency converters capable of covering the most diverse applications of induction heating.

ATE converters are subdivided into PFC, IFC/A, IFC/S and IFC/SM and are the result of the continuous updating of projects, development of new manufacturing solutions and regulation and control techniques with the use of high performing and reliable components and above all, they are also suitable for the particular induction heating applications required.

These converters are designed and manufactured compact to minimize the space inside the electrical panels and are suitable for a modular structure to facilitate any maintenance or replacement of these modules.

Converter cooling systems can be with forced ventilation or with closed circuit cooling liquid, depending on the power to be dissipated and for certain applications also regarding their final destination.

ATE converters are further equipped with self-diagnostics and interfaces for the communication with PLC and supervisory PC. They are designed, manufactured and tested in compliance with the requirements of the national Directives and European Standards in force as well as in compliance with the regulations and standards of the destination countries.


The PFC converter series is generally used in applications that require medium-high powers, from a hundred or so kW up to 2000 kW and over.

These converters are now consolidated products and installed in many systems, especially for applications such as continuous heating of wires, bars, pipes, etc., in press and braze welding systems, in large-capacity melting furnaces, etc.

They are used for their greater flexibility of use, where variations in load conditions are significant.

PFC converters can be cooled by either forced ventilation for small sizes or by water in a closed circuit for medium-high sizes.


IFC/A converters are generally used in applications that require intermediate powers from ten to few hundred kW. They are equipped with modern electronics on board that include modern microprocessors, which through installed software, command and control the management of the respective module including integral protection.


IFC/S converters are generally used in applications that require intermediate powers of several tens of kW. Having small dimensions and therefore extremely compact, they were specifically created for a modular use such as multi-wire heating systems but are nevertheless used for various applications such as heat treatments, for example of non-magnetic pieces, the heating of very small section wires and strips, both ferrous and non-ferrous, continuous annealing and welding of pipes, melting precious alloys in insulating crucibles, etc. The electronics installed onboard these modules, which commands and controls the management of the individual module including integral protection, is also appropriately designed to operate in modular configuration.


IFC/SM converters implement IGBT technology and are the evolution of the PFC group of converters. These converters are generally used in the applications that require high powers and where high performance is required. Excellent performance is preferred in various applications (heat treatment of metal parts, continuous heating of wires, bars, pipes, etc., preheating in rolling mills and forging plants, continuous pipe annealing, large-capacity melting furnaces, etc.). The M.F. converter is commanded by a system of microcontrollers that control and manage a modular installation configuration. It manages the correct piloting of the IGBTs, ensuring low loss switching (with soft-switching technique) to the resonance frequency of the load

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