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:
Jan. 06, 2026
Filed:
Apr. 07, 2023
Halliburton Energy Services, Inc., Houston, TX (US);
Tom Yohanan, Sand Springs, OK (US);
Noel Johney, Bixby, OK (US);
HALLIBURTON ENERGY SERVICES, INC., Houston, TX (US);
Abstract
Processing device-based systems and methods of testing IGBTs of a variable frequency drive inverter for proper functioning. The variable frequency drive may be used to control a motor, or another load associated with a hydrocarbon wellbore operation. During testing, a conductivity test can be performed on the IGBTs of the inverter, and if the conductivity test is passed, a quality check can be subsequently performed. The quality check can determine that one or more IGBTs of the inverter are not functioning properly when a discharge profile generated as part of the quality check differs from a stored reference discharge profile. The ability to assure that the IGBTs of a variable frequency drive are functioning properly can prevent potentially serious problems related to IGBT failure.