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:
Jun. 11, 2024
Filed:
Sep. 14, 2019
Peda V Medagam, Rapid City, SD (US);
Jack Yang, Rapid City, SD (US);
Nicholas R Kingsbury, Rapid City, SD (US);
Peda V Medagam, Rapid City, SD (US);
Jack Yang, Rapid City, SD (US);
Nicholas R Kingsbury, Rapid City, SD (US);
Abstract
Briefly, a voltage doubling variable frequency drive includes an active converter connected to a DC bus that is connected to a first inverter that converts DC power to variable frequency, three-phase AC power, and variable frequency, three-phase AC power to DC power, and to a second inverter that converts DC power to three-phase AC sine wave power. The converter converts single-phase AC power to DC power and DC power to single-phase AC power and maintains a selected voltage on the DC bus. The converter has an active rectifier and a controller that drives the rectifier with a pulse width modulation according to a switching scheme that switches the rectifier according to an adaptive hysteresis control to maintain constant switching.