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. 27, 2015
Filed:
Nov. 16, 2012
Applicant:
Phase Technologies, Llc, Rapid City, SD (US);
Inventors:
Larry G. Meiners, Rapid City, SD (US);
Theodore Clifton Pettyjohn, Rapid City, SD (US);
Jack Yongchen Yang, Rapid City, SD (US);
Peda V. Medagam, Rapid City, SD (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 23/06 (2006.01); H02M 5/40 (2006.01); H02P 23/00 (2006.01); H02M 5/458 (2006.01);
U.S. Cl.
CPC ...
H02P 23/0081 (2013.01); H02M 5/4585 (2013.01);
Abstract
A regenerative variable frequency drive includes an active converter connected to an inverter. The converter has a filter capacitor, an inductor, two half bridges, bus bars that connect to the inverter and bus capacitors. The converter converts single phase AC power to DC power and DC power to single phase AC power, boosts the AC power, reduces input line harmonics, maintains input current in phase with utility voltage in order to achieve near unity power factor, and maintains constant DC voltage between the bus bars.