Plant for melting and/or heating metal material, and method to supply electrical energy to said plant
AssigneeDanieli Automation S.P.A.
InventorsRoberto MOLTENI, Antonello MORDEGLIA
Life of this patent
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Abstract
Embodiments concern a plant for melting and/or heating metal material and a corresponding method to supply electrical energy. The plant comprises at least one induction furnace (11) and means (12) for supplying electrical energy to the induction furnace 11), wherein the electric power supply means (12) comprise at least one transformer (13) connected to an alternating current mains power network (14), at least one rectifier (15) located downstream of the transformer (13), at least one converter (16) located downstream of the rectifier device (15), and at least one coil (17) for melting and/or heating metal material.
Claims10
A plant for melting and/or heating metal material, comprising:
- an induction furnace;
- electric power supply means comprising a transformer connected to an alternating current mains power network;
- a rectifier located downstream of said transformer;
- a converter located downstream of said rectifier device;
- and
- a coil for melting and/or heating metal material;
- wherein said electric power supply means comprise an alternative energy source provided upstream of said converter and able to supply power energy to said induction furnace in addition, or as an alternative, to the electrical energy supplied by said mains power network;
- and
- wherein said plant further comprises a management unit configured to select one, or the other, or both between said mains power network and said alternative energy source as a function of one or more parameters.
A method to supply electrical energy in a plant for melting and/or heating metal materials, comprising an induction furnace and means for supplying electrical energy to said induction furnace, wherein said electric power supply means comprise a transformer connected to an alternating current mains power network, a rectifier located downstream of said transformer to transform the alternating current at exit from the transformer into direct current, a converter located downstream of said rectifier device to transform the direct current at exit from said rectifier into alternating current, and a coil for melting and/or heating metal material, said method comprising:
- providing to supply electrical energy to the induction furnace in addition, or as an alternative, to the electrical energy supplied by the mains power network, by means of an alternative energy source different and independent from the mains power network and associated with said induction furnace and
- selecting one, the other, or both between said mains power network and said alternative energy source as a function of one or more parameters.
Dependencies are inferred from the claim text.