US 11,695,349 B2 · Method for controlling a power converter

Abstract

A method for controlling a power converter, which in particular has partial power converters connected in parallel, is provided. The method includes determining a nominal voltage for the power converter; and dividing an output voltage for the power converter into a number of, in particular equal, voltage ranges. The voltage ranges are limited by a discrete upper voltage limit and a discrete lower voltage limit and the voltage ranges can be adjusted by switching the power converter, in particular the partial power converters. The method includes allocating the nominal voltage a voltage range with a discrete upper and lower voltage limits; allocating a first switch setting to the lower voltage limit; allocating a second switch setting to the upper voltage limit; and switching between the first switch setting and the second switch setting so that the power converter generates an actual voltage corresponding to the nominal voltage.

Claims21

Dependent claims

A method for controlling a power converter having a plurality of partial power converters coupled in parallel, comprising:

determining a nominal voltage for the power converter;
dividing an output voltage for the power converter into a plurality of voltage ranges, wherein:
the plurality of voltage ranges are limited by an upper voltage limit and a lower voltage limit, and
the plurality of voltage ranges are adjusted by switching the plurality of partial power converters;
allocating the nominal voltage to one of the plurality of voltage ranges;
allocating a first switch setting to the lower voltage limit;
allocating a second switch setting to the upper voltage limit;
and
switching between the first switch setting and the second switch setting to cause the power converter to generate a voltage corresponding to the nominal voltage.

6 more elements

A controller for a power converter,

wherein the power converter includes:
a plurality of individual power converters coupled in parallel and each configured to respectively generate an output alternating current, each individual power converter of the plurality of individual power converters being associated with a respective individual controller of a plurality of individual controllers and configured to generate an output alternating voltage using the respective individual controller and based on discrete switching states, and
wherein the controller is superordinate to the plurality of individual controllers and configured to:
specify a nominal output voltage for the power converter, wherein the nominal output voltage is between two discretely adjustable output voltages;
and
select one of the two output voltages depending on:
at least one of:
output alternating currents of the plurality of individual power converters, an integrated voltage error or a nominal voltage;
and
the discrete switching states and output alternating currents of the plurality of individual power converters.

7 more elements

Dependencies are inferred from the claim text.

Method for controlling a power converter

Life of this patent

Method for controlling a power converter

Life of this patent

Abstract

Claims21