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:
Dec. 28, 2010
Filed:
Jan. 23, 2006
Ulrich Boeke, Langerwehe, DE;
Ulrich Boeke, Langerwehe, DE;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A method and inverter () for converting a DC input voltage supplied by a DC source (), which is in particular a solar cell array, into a 3-phase AC output. For each phase (R, S, T) the DC input voltage is converted to a DC output voltage (DCR, DCS, DCT) with a specific waveform. The waveforms of the three DC output voltages are identical, shifted in time by 120° to each other and they are such that by subtracting any two of them a sinusoidal waveform is obtained. The waveform of each DC output voltage may comprise a first portion of ⅓ or 120° of the AC output cycle with an amplitude of zero and a subsequent second portion of ⅔ or 240° of the AC output cycle during which the DC output voltage has a non-zero amplitude.