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. 05, 2012
Filed:
Dec. 21, 2009
Jens Friebe, Nörten-Hardenberg, DE;
Oliver Prior, Marsberg, DE;
Frank Greizer, Kaufungen, DE;
Matthias Victor, Niestetal, DE;
Sven Bremicker, Alheim, DE;
Jens Friebe, Nörten-Hardenberg, DE;
Oliver Prior, Marsberg, DE;
Frank Greizer, Kaufungen, DE;
Matthias Victor, Niestetal, DE;
Sven Bremicker, Alheim, DE;
SMA Solar Technology AG, Niestetal, DE;
Abstract
An inverter has two input lines; an inverter bridge connected between the input lines and including at least one half-bridge having two normally conductive gate-controlled semiconductor switches; a controller which supplies control voltages to the gates of the semiconductor switches in an operative state of the inverter; and a DC voltage source for supplying an auxiliary control voltage to the gates of the semiconductor switches in an inoperative state of the inverter so as to hold the inverter bridge in a non-conductive state between the input lines. The DC voltage source has a charging unit connected between the input lines in series with a further normally conductive gate-controlled semiconductor switch, and charging a storage unit for electric charge, which is connected to the gate of the further semiconductor switch such that this switch becomes non-conductive, when the storage unit has been sufficiently charged for providing the auxiliary control voltage.