Patent · US Active

DC/DC converter

US8138638B2 · kind B2 · utility

4Cited by

2References

35Claims

0Family size

Assignee

SMA Solar Technology AG · DE

Inventors

Regine Mallwitz · Kassel, DE
Peter Zacharias · Kassel, DE
Bernd Engel · Stuttgart, DE

Key dates

Filing date	Jul 7, 2009
Grant date	Mar 20, 2012
Priority date	—
Expiry date	Jan 20, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E10/56
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The object of the invention is a high-efficiency DC/DC converter, in particular for photovoltaic plants, incorporating a transformerless DC/DC converter operated in the resonant mode of operation for converting a unipolar direct input voltage with an associated positive pole (+) and with a negative pole (−). There is imposed a resonance circuit incorporating at least one resonance inductance and at least one resonance capacitance, each resonance capacitance being connected to a respective one of the rectifier circuit arrangements in such a manner that the bipolar direct output voltage is provided, a voltage boosting circuit arrangement being connected to each resonance capacitance and to the rectifier circuit arrangement.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.