Patent · US Active

Systems and methods to optimize active current sharing of parallel power converters

US9450479B2 · kind B2 · utility

5Cited by

8References

16Claims

0Family size

Assignee

GE ENERGY POWER CONVERSION TECHNOLOGY LIMITED · GB

Inventors

Duro Basic · Berlin, DE
Mathieu Giroux · Munich, DE

Key dates

Filing date	Feb 20, 2015
Grant date	Sep 20, 2016
Priority date	—
Expiry date	Feb 20, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH02M1/123
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Provided is an approach for active control of cross currents flowing among multiple paralleled converters. Control of cross currents is achieved by using at least one proportional-integral (PI) controller and at least one resonant controller to target several selected dominant harmonics with infinite gains to ensure elimination of targeted harmonic cross currents in steady state. The cross currents are decomposed by into (1) common mode and differential mode components or (2) current phase domain components and each component is suppressed to a value approximately near zero using the controller. Also provided is a device comprises instructions, that, when executed by a processor, cause the processor to perform operations, which regulate and suppress cross current within a power system.

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