The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 24, 2018
Filed:
Oct. 18, 2013
Hypertherm, Inc., Hanover, NH (US);
Girish R. Kamath, Lebanon, NH (US);
Brian J. Currier, Newport, NH (US);
Boris Mandadzhiev, Melrose, MA (US);
Hypertherm, Inc., Hanover, NH (US);
Abstract
A plasma arc cutting system includes a power supply comprising a multi-pulse transformer and a plurality of semiconductor switches directly connected to a bank of capacitors, and a thermal regulation system connected to the power supply and configured to cool the multi-pulse transformer. The thermal regulation system includes a cold plate in direct contact with the semiconductor switches; a fluid conduit disposed within the cold plate; and a pump connected to the conduit and configured to direct a coolant fluid through the conduit. The power supply has at least one of the following operating requirements: (i) a weight to power ratio of approximately 22.4 pounds per kilowatt; (ii) a volume to power ratio of approximately 1366 cubic inches per kilowatt; (iii) an average semiconductor device case temperature of approximately 100 degrees Centigrade during a cutting operation; (iv) a maximum transformer temperature of about 133 degrees Centigrade during a cutting operation.