Patent · US Active

Operating an inverter for coupling an electric machine, designed for operation on AC voltage, with an AC voltage network

US10666177B2 · kind B2 · utility

0Cited by

3References

8Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Martin Hilscher · Erlangen, DE
Peter Kalbfleisch · Herzogenaurach, DE
Rainer Zurowski · Forchheim, DE

Key dates

Filing date	Sep 18, 2017
Grant date	May 26, 2020
Priority date	—
Expiry date	Sep 18, 2037

Classification

Technology area (CPC H)Electricity
CPC primaryH02P2201/13
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method for operating an inverter for coupling an electric machine designed for operation on AC voltage, to an AC voltage network, includes the steps of determining a torque-related machine current component composed of electrical machine currents of the electrical machine, detecting an actual value for a magnetic flux, determining an actual value of a machine torque of the electric machine by linking the detected magnetic flux to the torque-related machine current component, determining a torque difference between the actual value of the machine torque and a setpoint value of the machine torque of the electric machine, filtering the torque difference by a bandpass filter which is tuned to a machine-side natural frequency, determining a compensation signal by processing a filter output signal of the bandpass filter, and superimposing the compensation signal on the network control signal and/or the machine control signal.

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