Patent · US Active

Control of phase currents of inverters that are connected in parallel

US10819249B2 · kind B2 · utility

0Cited by

3References

12Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Harald Wiessmann · Tauberbischofsheim, DE
Bernd Dressel · Burgebrach, DE
Maximilian Schmitt · Eltmann, DE

Key dates

Filing date	Jul 17, 2017
Grant date	Oct 27, 2020
Priority date	—
Expiry date	Jul 17, 2037

Classification

Technology area (CPC H)Electricity
CPC primaryH02M1/084
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Disclosed is a method for controlling phase currents of a plurality of three-phase inverters connected in parallel. The phase currents of each inverter are controlled by direct hysteresis current control wherein an actual current space vector for actual values of the phase currents of each inverter is maintained about a target current space vector within a hysteresis window. The measured current space vector of a first inverter is formed by all three phase currents of the first inverter. The actual current space vector of each additional inverter is formed from exactly two phase currents of the respective additional inverter under the proviso that all three phase currents of the additional inverters add up to zero. The selection of the two phase currents from which the actual current space vector is formed, is varied.

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