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. 16, 2018
Filed:
Mar. 17, 2014
Frequency tracking piezoelectric transformer power converter with simultaneous two-parameter control
William M. Bradley, Lewisburg, PA (US);
Ross W. Bird, Canton, PA (US);
Gareth J. Knowles, Williamsport, PA (US);
Jonathan M. Zook, Muncy, PA (US);
Dennis L. Eldred, Jr., Williamsport, PA (US);
William M. Bradley, Lewisburg, PA (US);
Ross W. Bird, Canton, PA (US);
Gareth J. Knowles, Williamsport, PA (US);
Jonathan M. Zook, Muncy, PA (US);
Dennis L. Eldred, Jr., Williamsport, PA (US);
QorTek, Inc., Williamsport, PA (US);
Abstract
The present invention is directed to a piezoelectric transformer based power converter that exhibits efficient operating point tracking ability while providing output regulation by means of simultaneous two-parameter control of the converter power stage. A regulation control stage provides the power stage a regulation control signal indicative of the difference between the measured output parameter and a set-point reference, therefore continuously controlling the gain of the converter to result in a stabilized, regulated output. Additionally, a frequency control stage simultaneously provides the power stage with a frequency control signal correlative to the difference between the current and desired operating points of the piezoelectric transformer. The power stage then translates the frequency control signal into an adjustment to the operational frequency of the input signal to the piezoelectric transformer, as to continuously drive the operating point to the desired position.