Model based real-time optimization of fuel cell clusters

• US 7,951,496 B2
• Filed: 12/18/2007
• Issued: 05/31/2011
• Est. Priority Date: 12/20/2006
• Status: Active Grant

• Current Assignee: Bloom Energy Corporation
• Original Assignee: Bloom Energy Corporation
• Inventors: Venkataraman, Swaminathan, Weingaertner, David
• Primary Examiner(s): Kalafut; Stephen J.
• Application Number:
  US12/000,924
• Publication Number:
  US 20080166604A1
• Time in Patent Office: 1,260 Days
• Field of Search: 429/428, 429/471
• US Class Current: 429/428
• CPC Class Codes: H01M 8/04992 characterised by the implementation of mathematical or computational algorithms, e.g. feedback control loops, fuzzy logic, neural networks or artificial intelligence
• CPC Class Codes: H01M 8/249 comprising two or more groupings of fuel cells, e.g. modular assemblies
• CPC Class Codes: Y02E 60/50 Fuel cells

Abstract

A power generation system is provided. The power generation system includes a fuel cell controller, at least one fuel cell cluster operably connected to the fuel cell controller and a data server operably connected to the fuel cell cluster. The data server is configured to obtain operational data from the fuel cell cluster. In addition, a model server operably connected to the data server. The model server is configured to model the operational characteristics of the fuel cell cluster during the actual operation of the fuel cell cluster and modify the operation of the fuel cell cluster in real-time, based on the operational data obtained by the data server.

Claims

1. A power generation system, comprising:

a fuel cell controller;

at least one fuel cell cluster operably connected to the fuel cell controller;

a data server operably connected to the fuel cell cluster, wherein the data server is configured to obtain operational data from the fuel cell cluster; and

a model server operably connected to the data server, configured to model operational characteristics of the fuel cell cluster during the actual operation of the fuel cell cluster and modify the operation of the fuel cell cluster in real-time, based on the operational data obtained by the data server.

2. The power generation system as claimed in claim 1, further comprising an operator advisory station operably connected to the model server and the fuel cell controller and configured to allow a human operator to modify the operation of the fuel cell cluster based on recommendations received from the model server.

3. The power generation system as claimed in claim 1, wherein the fuel cell cluster comprises:

a plurality of fuel cell modules, each containing a plurality of fuel cell stacks;

a fuel processing module adapted in operation to deliver fuel to the plurality of fuel cell modules; and

an electronics module adapted in operation to receive power from the fuel cell modules and modify the received power into a usable form.

4. The power generation system as claimed in claim 3, wherein the fuel cell controller is configured to control the operation of each individual fuel cell module in the fuel cell cluster.

5. The power generation system as claimed in claim 1, wherein the fuel cell cluster is operably connected to the data server via a gateway.

6. The power generation system as claimed in claim 5, wherein the gateway is co-located with the fuel cell cluster.

7. The power generation system as claimed in claim 1, wherein the data server is configured to send operational instructions to the fuel cell cluster based on the model server'"'"'s analysis of the received operational data.

8. The power generation system as claimed in claim 7, wherein the operational instructions are set points configured to govern the operation of the fuel cell cluster.

9. The power generation system as claimed in claim 1, wherein the data server is configured to reconcile the received operational data with known instrument models and reliability data to obtain a consistent set of operational data values for the fuel cell cluster.

10. The power generation system as claimed in claim 1, wherein the model server is configured to receive the operational data from the data server and determine the optimum economic and operational efficiency of the power generation system based on the operational data.

11. A method for optimizing the operation of a power generation system having at least one fuel cell cluster containing a plurality of fuel cell modules, comprising:

obtaining operational data from the fuel cell cluster during operation of the fuel cell cluster;

modeling the operation of the fuel cell cluster in real-time using the operational data obtained from the fuel cell cluster;

determining whether the operation of the fuel cell cluster can be improved by calculating the optimum operational set points for the fuel cell cluster based on the obtained operational data; and

modifying the operation of the fuel cell cluster by setting the fuel cell cluster to operate at the optimum operational set points.

12. The method for optimizing the operation of a power generation system as claimed in claim 11, further comprising reporting the optimum operational set points for the fuel cell cluster to a user.

13. The method for optimizing the operation of a power generation system as claimed in claim 11, wherein the optimum operational set points are directed to operate the power generation system at optimum efficiency.

14. The method for optimizing the operation of a power generation system as claimed in claim 11, wherein the optimum operational set points are directed to operate the power generation system with optimum operating costs.

15. The method for optimizing the operation of a power generation system as claimed in claim 11, wherein the fuel cell cluster comprises:

the plurality of fuel cell modules, each containing a plurality of fuel cell stacks;

a fuel processing module adapted in operation to deliver fuel to the plurality of fuel cell modules; and

an electronics module adapted in operation to receive power from the fuel cell modules and modify the received power into a usable form.

16. The method for optimizing the operation of a power generation system as claimed in claim 15, further comprising controlling the operation of each individual fuel cell module in the fuel cell cluster.

17. The method for optimizing the operation of a power generation system as claimed in claim 15, wherein the step of modifying further comprises changing at least one of fuel flow rate, a parameter which influences temperature, or power output of the fuel cell module.

18. The method for optimizing the operation of a power generation system as claimed in claim 17, wherein the step of modifying comprises operating a plurality of fuel cell modules at a different fuel flow rates, temperature, and/or power output.

19. The method for optimizing the operation of a power generation system as claimed in claim 11, wherein the fuel cell cluster is operably connected to a data server via a gateway.

20. The method for optimizing the operation of a power generation system as claimed in claim 19, wherein the gateway is co-located with the fuel cell cluster.

21. The method for optimizing the operation of a power generation system as claimed in claim 11, wherein operational instructions are sent to the fuel cell cluster based on an analysis of the received operational data.

22. The method for optimizing the operation of a power generation system as claimed in claim 21, wherein the operational instructions are set points configured to govern the operation of the fuel cell cluster.

23. The method for optimizing the operation of a power generation system as claimed in claim 11, wherein the received operational data is reconciled with known instrument models and reliability data to obtain a consistent set of operational data values for the fuel cell cluster.

24. The method for optimizing the operation of a power generation system as claimed in claim 11, wherein optimum economic and operational efficiency of the power generation system is determined based on the operational data.

25. The method for optimizing the operation of a power generation system as claimed in claim 11, wherein the step of modifying the operation of the fuel cell cluster comprises modifying at least one continuous or discrete variable.

26. A power generation system, comprising:

a plurality of fuel cell clusters, each cluster comprising;

at least one fuel cell module, each fuel cell module comprising a plurality of fuel cell stacks;

a fuel processing module adapted in operation to deliver fuel to the fuel cell module; and

an electronics module adapted in operation to receive power from the fuel cell modules and modify the received power into a usable form;

a fuel cell economic controller; and

a fuel cell supervisory controller; and

at least one server operably connected to the fuel cell economic controller of each cluster and configured to receive operational data from each fuel cell cluster, wherein the at least one server is adapted to determine an optimum economic and operational efficiency of the power generation system and to modify operation of the plurality of fuel cell clusters to achieve the optimum economic and operational efficiency of the power generation system based on the received operational data.