Integrated power system control method and related apparatus with energy storage element

Patent metadata

Field	Value
Publication number	US-9496748-B2
Application number	US-201213547250-A
Country	US
Kind code	B2
Filing date	Jul 12, 2012
Priority date	Oct 25, 2011
Publication date	Nov 15, 2016
Grant date	Nov 15, 2016

Abstract

Systems and methods for controlling a hybrid power architecture to provide fuel or energy savings. Recharge time of an energy storage device (ESD) is reduced through the application of a controlled potential and ESD recharge time management over the life of the hybrid system through manipulation of the ESD charge state window of operation. Fuel or energy savings is achieved by controlling the partial-state-of-charge (PSOC) window of the ESD based on a recharge resistance profile of the ESD and by controlling a charging potential applied to the ESD based on a recharge current and/or the estimated recharge resistance profile of the ESD.

First claim

What is claimed is:

1. A system, comprising:
an energy storage device configured to store DC electrical power and provide DC electrical power to a DC load;
a regulator operatively connected to the energy storage device and configured to convert AC electrical power, from an AC electrical power source, to DC electrical power and provide the DC electrical power to the energy storage device and/or to the DC load; and
a controller in communication with the energy storage device and the regulator, and operable to:
direct the regulator to apply a first recharge potential to the energy storage device when a determined recharge resistance value of the energy storage device is below a determined resistance threshold value; and
direct the regulator to apply a second recharge potential to the energy storage device, which is less in magnitude than the first recharge potential, when the determined recharge resistance value of the energy storage device is above the determined resistance threshold value.

2. The system according to claim 1 , wherein the energy storage device comprises a battery power source.

3. The system according to claim 1 , wherein the controller is further operable to determine the recharge resistance value of the energy storage device by monitoring potential and recharge current of the energy storage device during operation of the system.

4. The system according to claim 1 , wherein the controller is further operable to:
store at least one of a determined profile or map of recharge resistance value versus charge state of the energy storage device, and
determine a charge window of operation of the energy storage device, based on the at least one of the profile or the map, which conserves fuel or energy used by the AC electrical power source.

5. The system according to claim 4 , wherein the controller is further operable to cyclically turn the AC electrical power source on and off based on the charge window of operation.

6. The system according to claim 4 , wherein the controller is further operable to determine the at least one of the profile or map by monitoring potential and recharge current of the energy storage device during operation of the system.

7. The system according to claim 1 , wherein the AC electrical power source comprises an engine and generator set that is configured to generate AC electrical power by consuming fuel.

8. The system according to claim 1 , wherein the AC electrical power source comprises a wind energy system.

9. A system, comprising:
an energy storage device configured to store DC electrical power and provide DC electrical power to a DC load;
a regulator operatively connected to the energy storage device and configured to condition DC electrical power, from a DC electrical power source, and provide the DC electrical power to the energy storage device and/or to the DC load; and
a controller in communication with the battery energy storage device and the regulator, and operable to:
direct the regulator to apply a first recharge potential to the energy storage device when a determined recharge resistance value of the energy storage device is below a determined resistance threshold value; and
direct the regulator to apply a second recharge potential to the energy storage device, which is less in magnitude than the first recharge potential, when the determined recharge resistance value of the energy storage device is above the determined resistance threshold value.

10. The system according to claim 9 , wherein the energy storage device comprises a battery power source.

11. The system according to claim 9 , wherein the controller is further operable to determine the recharge resistance value of the energy storage device by monitoring potential and recharge current of the energy storage device during operation of the system.

12. The system according to claim 9 , wherein the controller is further operable to:
store at least one of a determined profile or map of recharge resistance value vs. charge state of the energy storage device, and
determine a charge window of operation of the energy storage device, based on the at least one of the profile or the map, which conserves energy produced and/or stored by the DC electrical power source.

13. The system according to claim 12 , wherein the controller is further operable to cyclically turn the DC electrical power source on and off based on the charge window of operation.

14. The system according to claim 12 , wherein the controller is further operable to determine the at least one of the profile or the map by monitoring potential and recharge current of the energy storage device during operation of the system.

15. The system according to claim 9 , wherein the DC electrical power source comprises a solar energy system.

16. The system according to claim 9 , wherein the DC electrical power source comprises a fuel cell energy system.

Assignees

• Chuah Christopher James
• Wiegman Herman Lucas Norbert
• Whisenhunt Jr Donald Wayne
• Bull Roger Neil
• Bukkasamudram Kalyan
• Brady Connor
• Gotobed Mark
• Gen Electric

Inventors

• Chuah Christopher James
• Wiegman Herman Lucas Norbert
• Whisenhunt Jr Donald Wayne
• Bull Roger Neil
• Bukkasamudram Kalyan
• Brady Connor
• Gotobed Mark

Classifications

• H02J7/947

  in response to integrated charge or discharge current · CPC title

• H02J7/92

  with prioritisation of loads or sources · CPC title

• H02J9/066 Primary

  characterised by the use of dynamo-electric machines (H02J9/08 takes precedence) · CPC title

• H02J7/04

  Regulation of charging current or voltage · CPC title

• H02J7/14

  for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle · CPC title