US 2026/0100694 A1 · Designing a Plurality of Frequency Filters Distributed in a Vehicle On-Board Power Supply System

Abstract

A method for designing frequency filters, includes (a) setting up a simulation model of a power supply system with frequency filters; (b) determining initial set of filter parameters; (c) calculating the model using the filter parameters in time domain; (d) extracting safety-critical trajectories from the calculated model with underlying interference functions; (e) transforming safety-critical trajectories from time domain into frequency domain; (f) determining transfer functions in s-domain by system identification; (g) extracting pairs of residuals and poles based on transfer functions in s-domain; (h) determining energy loss and voltage stability values based on the residuals and poles; (i) varying the filter parameters; (j) repeating (c)-(h) with the filter parameters varied in step (i), until a termination criterion is reached; (k) after which, selecting, from a set of points with energy loss and voltage stability values determined in step (h), a point lying on a pareto-front of the set of points.

Claims13

Dependent claims

1-12. (canceled)

A method for designing a plurality of frequency filters that are distributed in an on-board power supply system of a vehicle, the method comprising:

(a) setting up a simulation model of the on-board power supply system with a given number of frequency filters at defined locations of the on-board power supply system;
(b) determining an initial set of filter parameters of the frequency filters;
(c) calculating the simulation model using the set of filter parameters in time domain;
(d) extracting safety-critical trajectories from the calculated simulation model, together with underlying interference functions;
(e) transforming the safety-critical trajectories from the time domain into the frequency domain;
(f) determining transfer functions in a mathematical s-domain, by system identification;
(g) extracting pairs of residuals and poles on a basis of transfer functions in the s-domain;
(h) determining an energy loss value and a voltage stability value on a basis of the extracted residuals and poles;
(i) varying the set of filter parameters of the frequency filters;
(j) repeating steps (c) to (h) using the set of filter parameters varied in step (i), until a termination criterion is achieved;
and
(k) further to the achievement of the termination criterion, selecting, from a set of points having energy loss values and voltage stability values determined in step (h), a point that lies on a pareto-front of the set of points.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application

19/113,982Filed 11 Aug 2023

Priority

DE 10 2022 124 563.223 Sep 2022

Published

9 Apr 2026

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

G06F 30/373
Circuit design at the analogue level: design optimisation
H02J 1/00
Circuit arrangements for dc mains or dc distribution networks
B60L 1/003
Supplying electric power to auxiliary equipment of vehicles: to auxiliary motors, e.g. for pumps, compressors
G06F 30/15
Geometric CAD: vehicle, aircraft or watercraft design

Designing a Plurality of Frequency Filters Distributed in a Vehicle On-Board Power Supply System

Life of this patent

Designing a Plurality of Frequency Filters Distributed in a Vehicle On-Board Power Supply System

Life of this patent

Abstract

Claims13