INTELLIGENT POWER SYSTEM

• US 20110018341A1
• Filed: 09/23/2010
• Published: 01/27/2011
• Est. Priority Date: 11/04/2002
• Status: Active Grant

• Current Assignee: Raytheon Company (Rtx Corporation)
• Original Assignee: Raytheon Company (Rtx Corporation)
• Inventors: Bourgeois, Jacqueline M., Jacobson, Boris S.
• Granted Patent: US 8,072,093 B2
• Time in Patent Office: Days
• US Class Current: 307/12
• CPC Class Codes: H02H 7/22 for distribution gear, e.g. bus-bar systems; for switching devices detecting mechanical or electrical defects in gas-insulated switchgears H02B13/065
• CPC Class Codes: H02J 3/38 Arrangements for parallely feeding a single network by two or more generators, converters or transformers

Abstract

An intelligent power system includes one or more common power sources and one or more subsystem components interconnected with the common power sources. Each common power source includes an unregulated bus, a plurality of power source regulated buses, each regulated bus originating at a common power source and terminating at a respective one of k load subsystems, a power source, first, second, third and fourth groups of switches, a regulator having a plurality of outputs and an energy storage element. The regulator is configured to provide a time-shared mode of operation to provide power sequentially to one or more of the k load subsystems, such that the time intervals when the regulator is connected to any one of the k load subsystems do not overlap, and where the regulator is configured to switch in supplemental power from the energy storage, if necessary, to ensure that an average power delivered by the regulator does not exceed the average power consumed by all of the k load subsystems.

Claims

1. A power system common power source subsystem comprising:

a power source unregulated bus;

a plurality of power source regulated buses, each respective power source regulated bus originating at a common power source and terminating at a respective one of k load subsystems, each respective power source regulated bus directly coupling only the common power source and the respective one of the k load subsystems without coupling to any other of the k load subsystems;

for each respective one of the k load subsystems, a plurality of direct independent electrical interconnections between the respective one of the k load subsystems and each other one of the k load subsystems, each direct independent electrical interconnection comprising one or more conductors, wherein each direct independent electrical interconnection originates at the respective one of the k load subsystems and terminates at one other of the k load subsystems without coupling to any other of the k load subsystems, such that there is no more than a single direct independent electrical interconnection between any two of the k load subsystems;

at least one power source, each of the at least one power source having an output;

a first group of at least one switch, each of the first group of at least one switch coupling a respective one of the at least one power source output to the power source unregulated bus;

at least one regulator, each of the at least one regulator having an input and a plurality of outputs;

at least one energy storage element, each of the at least one energy storage element having an output coupled to a respective one of the at least one regulator and being further constructed and arranged so as to be able to be recharged by the at least one regulator;

a second group of at least one switch, each of the second group of at least one switch coupling a respective input of the at least one regulator to the power source unregulated bus; and

a third group of at least one switch, each of the third group of at least one switch coupling a respective one of the at least one regulator'"'"'s outputs to the power source regulated bus; and

a fourth group of at least one switch, each of the fourth group of at least one switch coupling a respective output of the at least one energy storage element to the subsystem regulated bus and wherein the fourth group of at least one switch is controlled by the regulator;

wherein at least one of the plurality of outputs of the regulator is coupled to at least one of the first group of at least one switch, at least one of the plurality of outputs of the regulator is coupled to at least one of the second group of at least one switch, at least one of the plurality of outputs of the regulator is coupled to at least one of the third group of at least one switch, and at least one of the plurality of outputs of the regulator is coupled to at least one of the fourth group of at least one switch;

wherein the regulator is configured to provide a time-shared mode of operation to provide power sequentially to one or more of the k load subsystems, wherein;

a time interval T defines a repeatable time interval of the regulator;

a time interval T_a defines a time interval when a respective one of the k load subsystems, load a, is connected to the regulator;

the regulator is configured to operably couple a given one of the k load subsystems, load a, to the regulator during the respective time interval T_a, such that the time intervals when the regulator is connected to any one the respective one of the k load subsystems do not overlap, whereby T≧

Σ

T_a for the summation from a=1 to a=k;

the regulator is configured to switch in supplemental power from the energy storage element during T_a, if necessary, to ensure that an average power P_reg delivered by the regulator does not exceed the average power consumed by all of the k load subsystems, such that;

P_reg≧

(1/T)*∫

(Σ

(P_a(t))dt

for the interval of integration from t=0 to t=T and the summation from a=1 to a=k

where P_a(t) is the load power for a given one of the k load subsystems and where a is the load number.

2. The power system common power source subsystem of claim 1, wherein:

at least one of the k load subsystems, load a, is a pulsed load subsystem, such that, for load a, T_a=T_a,on+T_a,off, where time period T_a,on is a time period during which the load a is on and T_a,off is a time period during which the load is off, wherein the load a requires power from the regulator only during time period T_a,on.

3. The power system common power source subsystem of claim 2, wherein the pulsed mode of the pulsed load subsystem is periodic.

4. The power system common power source subsystem of claim 2, wherein the pulsed mode of the pulsed load system is not periodic.

5. The power system common power source subsystem of claim 2, wherein the regulator is configured to control the third group of at least one switch and the fourth group of at least one switch so as to enable the regulator to recharge the energy storage element during T_a,off.

6. The power system common power source subsystem of claim 1, wherein the regulator is configured to adjust at least one of T for the regulator and T_a for any one or more of the k load subsystems so as to ensure that T≧

Σ

T_a for the summation from a=1 to a=k.

7. The power system common power source subsystem of claim 2, wherein the regulator is configured to adjust at least one of T, T_a,on and T_a,off, for any one or more of the k load subsystems so as to ensure that T≧

Σ

T_a for the summation from a=1 to a=k.

8. The power system common power source subsystem of claim 1, wherein the regulator is configured to adjust at least one of T for the regulator and T_a for any one or more of the k load subsystems so as to ensure that

P_reg≧

(1/T)*∫

(Σ

(P_a(t)dt

for the interval of integration from t=0 to t=T and the summation from a=1 to a=k.

9. The power system common power source subsystem of claim 1 wherein each one of the respective k load subsystems has associated with it a respective, separate energy storage element.

10. The power system common power source subsystem of claim 1, further comprising a plurality of energy storage elements, such that at least a first portion of the k load subsystems have associated with them respective energy storage elements, and at least a second portion of the k load subsystems do not have associated with them respective energy storage elements, wherein at least one of the plurality of energy storage elements associated with a respective one of the k load subsystems in the first portion comprises a distributed energy storage element that is able to share its energy with at least one of the k load subsystems in the second portion of k load subsystems.

11. The power system common power source subsystem of claim 10, wherein the distributed energy storage element shares energy with the at least one of the k load subsystems in the second portion of k load subsystems that is physically closest to the respective one of the k load subsystems in the first portion.

12. The power system common power source subsystem of claim 1, wherein the energy storage element is constructed and arranged so as to be continuously recharged by the regulator.

13. The power system common power source subsystem of claim 11, wherein the energy storage element is constructed and arranged so as to be continuously recharged by the regulator if the energy storage element is depleted.

14. The power system common power source subsystem of claim 1, wherein the energy storage element is constructed and arranged so as to be recharged during a time interval when the regulator does not require energy storage.

15. The power system common power source subsystem of claim 1, wherein, when the regulator is recharging the energy storage element, the power delivered to a given one or more of the k load subsystems is reduced by approximately the same amount of power as is delivered to the energy storage element.