Electrical power system stability

Patent metadata

Field	Value
Publication number	US-9646114-B2
Application number	US-201313938588-A
Country	US
Kind code	B2
Filing date	Jul 10, 2013
Priority date	Jul 10, 2013
Publication date	May 9, 2017
Grant date	May 9, 2017

Abstract

A method and apparatus for establishing a validated stable design for a stable electrical power system. An initial design for an electrical power system is established. The initial design for the electrical power system satisfies design requirements. The initial design for the electrical power system is simulated for a plurality of simulated operating conditions for the electrical power system to generate simulation data. Stability parameter requirements for a stable design for the electrical power system are established from the simulation data. A hardware implementation of the stable design for the electrical power system is tested to generate hardware testing data. The stable design for the electrical power system is validated using the hardware testing data to establish a validated stable design for the electrical power system.

First claim

What is claimed is:

1. An apparatus comprising:
a design system having a processor coupled to a memory and configured to establish an initial design for an electrical power system, wherein the initial design for the electrical power system identifies and establishes design requirements for the electrical power system;
a simulation system in communication with the design system and configured to simulate the initial design for the electrical power system for a plurality of simulated operating conditions for the electrical power system to generate simulation data;
a stability evaluation system configured to receive the simulation data and to generate therefrom stability parameter requirements for a stable design for the electrical power system from the simulation data; and
a hardware testing system in communication with the stability evaluation system and configured to use the stability parameter requirements to test a hardware implementation of the stable design for the electrical power system, and to generate hardware testing data, wherein the stability evaluation system is configured to receive and use the hardware testing data to validate the stable design against the design requirements for the electrical power system to establish a validated stable design for the electrical power system.

2. The apparatus of claim 1 , wherein:
the design system is configured to establish the stable design for the electrical power system comprising the stability parameter requirements.

3. The apparatus of claim 1 , wherein:
the design requirements for the electrical power system are selected from power requirements for the electrical power system, safety requirements for the electrical power system, and physical requirements for the electrical power system; and
the stability parameter requirements comprise requirements for parameters of the electrical power system selected from Middlebrook criterion, Nyquist criterion, source impedances, load impedances, and resonances.

4. The apparatus of claim 1 , wherein the plurality of simulated operating conditions for the electrical power system comprise steady state operating conditions for the electrical power system and transient operating conditions for the electrical power system.

5. The apparatus of claim 4 , wherein the plurality of simulated operating conditions for the electrical power system comprise simulated normal operating conditions for the electrical power system and simulated abnormal operating conditions for the electrical power system.

6. The apparatus of claim 1 , wherein the hardware testing system is configured to test the hardware implementation of the stable design for the electrical power system for a plurality of operating conditions for the electrical power system corresponding to the plurality of simulated operating conditions for the electrical power system to generate the hardware testing data.

7. The apparatus of claim 1 further comprising a DC filter optimizer configured to establish requirements for damping circuits for the stable design for the electrical power system to reduce resonances in DC filters in the electrical power system.

8. The apparatus of claim 1 further comprising a model validator configured to establish a validated simulation model of the validated stable design for the electrical power system.

9. The apparatus of claim 1 , wherein the electrical power system is the electrical power system for an aircraft.

10. A method for establishing a validated stable design for a stable electrical power system, comprising:
establishing, using a design system having a processor coupled to a memory, an initial design for an electrical power system, wherein the initial design for the electrical power system identifies and establishes design requirements for the electrical power system;
simulating, using a simulation system in communication with the design system, the initial design for the electrical power system for a plurality of simulated operating conditions for the electrical power system to generate simulation data;
establishing, using a stability evaluation system, stability parameter requirements for a stable design for the electrical power system from the simulation data;
testing, using a hardware testing system, a hardware implementation using the stability parameter requirements of the stable design for the electrical power system to generate hardware testing data; and
validating, using the hardware testing system, the stable design against the design requirements for the electrical power system using the hardware testing data to establish a validated stable design for the electrical power system.

11. The method of claim 10 , wherein the design requirements for the electrical power system are selected from power requirements for the electrical power system, safety requirements for the electrical power system, and physical requirements for the electrical power system.

12. The method of claim 10 , wherein the stability parameter requirements comprise requirements for parameters of the electrical power system selected from Middlebrook criterion, Nyquist criterion, source impedances, load impedances, and resonances.

13. The method of claim 10 , wherein the plurality of simulated operating conditions for the electrical power system comprise simulated steady state operating conditions for the electrical power system and simulated transient operating conditions for the electrical power system.

14. The method of claim 13 , wherein the plurality of simulated operating conditions for the electrical power system comprise simulated normal operating conditions for the electrical power system and simulated abnormal operating conditions for the electrical power system.

15. The method of claim 10 , wherein testing the hardware implementation of the stable design for the electrical power system comprises testing the hardware implementation of the stable design for the electrical power system for a plurality of operating conditions for the electrical power system corresponding to the plurality of simulated operating conditions for the electrical power system to generate the hardware testing data.

16. The method of claim 10 further comprising establishing requirements for damping circuits for the stable design for the electrical power system to reduce resonances in DC filters in the electrical power system.

17. The method of claim 10 further comprising establishing a validated simulation model of the validated stable design for the electrical power system.

18. The method of claim 10 , wherein the electrical power system is the electrical power system for an aircraft.

19. A method for certifying a change to a design for a stable electrical power system, comprising:
establishing, using a design system having a processor coupled to a memory, an initial design for an electrical power system, wherein the initial design for the electrical power system satisfies design requirements for the electrical power system;
simulating, using a simulation system in communication with the design system, the initial design for the electrical power system for a plurality of simulated operating conditions for the electrical power system to generate simulation data;
establishing, using a stability evaluation system, stability parameter requirements for a stable design for the electrical power system from the simulation data;
testing, using a hardware testing system, a hardware implementation using the stability parameter requirements of the stable design for the electrical power system to generate

Assignees

• Boeing Co

Inventors

• Karimi Kamiar J
• Solodovnik Eugene V
• Lewis Zachary R
• White Jeffrey Joseph

Classifications

• H02J2103/30

  Simulating, planning, modelling, reliability check or computer assisted design [CAD] of electric power networks · CPC title

• G06F2119/06

  Power analysis or power optimisation · CPC title

• G06F30/33

  Design verification, e.g. functional simulation or model checking · CPC title

• G05B23/0256

  injecting test signals and analyzing monitored process response, e.g. injecting the test signal while interrupting the normal operation of the monitored system; superimposing the test signal onto a control signal during normal operation of the monitored system · CPC title

• B64D2221/00

  Electric power distribution systems onboard aircraft · CPC title