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. 01, 2011
Sampat Shekhawat, Mountain Top, PA (US);
Myoungho Lee, Bucheon, KR;
Yongtaek Lee, Gimpo, KR;
Jacobo Aguillon-garcia, Bucheon, KR;
Bongjoo Choi, Bucheon, KR;
Sampat Shekhawat, Mountain Top, PA (US);
Myoungho Lee, Bucheon, KR;
Yongtaek Lee, Gimpo, KR;
Jacobo Aguillon-Garcia, Bucheon, KR;
Bongjoo Choi, Bucheon, KR;
Fairchild Korea Semiconductor Ltd., Bucheon, KR;
Abstract
A multilevel inverter circuit includes an inverter control circuit that controls switching of main and neutral switches. The inverter control circuit receives current vector information indicating flow direction of an AC current output of the multilevel inverter circuit. The inverter control circuit eliminates dead time between switching of a neutral switch and a main switch depending on whether the AC current output is flowing towards a load or away from the load. Among other advantages, elimination of dead time improves the total harmonic distortion of the sinusoidal AC voltage output of the multilevel inverter circuit.