Reducing conversion losses and minimizing load via appliance level distributed storage

Patent metadata

Field	Value
Publication number	US-10630099-B2
Application number	US-201313914911-A
Country	US
Kind code	B2
Filing date	Jun 11, 2013
Priority date	Jun 11, 2013
Publication date	Apr 21, 2020
Grant date	Apr 21, 2020

Abstract

Techniques, systems, and articles of manufacture for reducing conversion losses and minimizing load via appliance level distributed storage. A method includes identifying an alternating current power source associated with a direct current-powered device, determining a storage scheme for storing direct current power, converted from alternating current power input from the identified alternating current power source, in a local storage component associated with the direct current-powered device, and managing output of direct current power to the direct current-powered device based on the storage scheme and the identified alternating current power source.

First claim

What is claimed is:

1. A method comprising:
measuring (i) a power supply frequency of an alternating current power source at a direct current-powered device level and (ii) a power supply voltage magnitude of the alternating current power source at the direct current-powered device level;
identifying one of multiple types of alternating current power sources attributed to the alternating current power source associated with the direct current-powered device based on (i) said measured power supply frequency at the direct current-powered device level and (ii) said measured power supply voltage magnitude at the direct current-powered device level, wherein said identifying comprises generating an inference of a state of the alternating current power source via s(k)={S 0 , S 1 , . . . , S N } ∀k∈{1 . . . n}, wherein time (t) is discretized in Δ increments within a temporal sequence such that t=Δk, wherein N is the number of states (S), n is the temporal sequence length, and wherein related measurements related to each of the states (S) include sensed frequency f(k) and voltage v(k), wherein the voltage measurements are discretized into m v equi-spaced bins between v min and v max , and the frequency measurements are discretized into m f equi-spaced bins between f min and f max ;
determining one or more temporal power outage patterns associated with the identified type of alternating current power source by analyzing time series data pertaining to the identified type of alternating current power source;
determining a storage scheme for storing direct current power, converted from alternating current power input from the alternating current power source, in a local storage component localized at the direct current-powered device, wherein said determining the storage scheme is based on (i) one or more usage patterns attributed to the direct current-powered device and (ii) one or more anticipated power outages associated with the identified type of alternating current power source, anticipated based on the one or more determined temporal power outage patterns; and
managing output of direct current power from the local storage component to the direct current-powered device based on the storage scheme and the identified type of alternating current power source, wherein said managing comprises toggling between (i) the alternating current power source and (ii) the direct current power from the local storage component;
wherein the steps are carried out by at least one computer device.

2. The method of claim 1 , comprising:
dynamically determining one or more operating parameters of the direct current-powered device based on the identified type of alternating current power source.

3. The method of claim 1 , wherein said identifying comprises identifying an alternating current power source associated with a direct current-powered device in real-time.

4. The method of claim 1 , wherein said alternating current power source comprises a power grid.

5. The method of claim 1 , wherein said alternating current power source comprises a generator and/or an inverter.

6. The method of claim 1 , wherein said determining a storage scheme comprises identifying one or more user preferences.

7. The method of claim 1 , wherein said determining a storage scheme comprises determining a minimum charging threshold to be maintained at the local storage component associated with the direct current-powered device.

8. The method of claim 1 , wherein said determining a storage scheme comprises determining one or more power availability patterns associated with the identified type of alternating current power source.

9. The method of claim 1 , wherein said determining a storage scheme comprises determining one or more power demand patterns associated with the direct current-powered device.

10. The method of claim 1 , wherein said determining a storage scheme comprises determining a time of use pricing scheme associated with the identified type of alternating current power source.

11. The method of claim 1 , wherein said managing comprises managing output of direct current power to the direct current-powered device to reduce load on the alternating current power source.

12. The method of claim 1 , wherein said managing comprises managing output of direct current power to the direct current-powered device to increase availability of the direct current-powered device for a user.

13. An article of manufacture comprising a non-transitory computer readable storage medium having computer readable instructions tangibly embodied thereon which, when implemented, cause a computer to carry out a plurality of method steps comprising:
measuring (i) a power supply frequency of an alternating current power source at a direct current-powered device level and (ii) a power supply voltage magnitude of the alternating current power source at the direct current-powered device level;
identifying one of multiple types of alternating current power sources attributed to the alternating current power source associated with the direct current-powered device based on (i) said measured power supply frequency at the direct current-powered device level and (ii) said measured power supply voltage magnitude at the direct current-powered device level, wherein said identifying comprises generating an inference of a state of the alternating current power source via s(k)={S 0 , S 1 , . . . , S N } ∀k∈{1 . . . n}, wherein time (t) is discretized in Δ increments within a temporal sequence such that t=Δk, wherein N is the number of states (S), n is the temporal sequence length, and wherein related measurements related to each of the states (S) include sensed frequency f(k) and voltage v(k), wherein the voltage measurements are discretized into m v equi-spaced bins between v min and v max , and the frequency measurements are discretized into m f equi-spaced bins between f min and f max ;
determining one or more temporal power outage patterns associated with the identified type of alternating current power source by analyzing time series data pertaining to the identified type of alternating current power source;
determining a storage scheme for storing direct current power, converted from alternating current power input from the alternating current power source, in a local storage component localized at the direct current-powered device, wherein said determining the storage scheme is based on (i) one or more usage patterns attributed to the direct current-powered device and (ii) one or more anticipated power outages associated with the identified type of alternating current power source, anticipated based on the one or more determined temporal power outage patterns; and
managing output of direct current power from the local storage component to the direct current-powered device based on the storage scheme and the identified type of alternating current power source, wherein said managing comprises toggling between (i) the alternating current power source and (ii) the direct current power from the local storage component.

14. A system comprising:
a memory; and
at least one processor coupled to the memory and configured for:
measuring (i) a power supply frequency of an alternating current power source at a direct current-powered device level and (ii) a power supply voltage magnitude of the alternating current power source at the direct current-powered device level;
identifying one of multiple types of alternating current power sources attributed to the alternating current power source associated with the direct current-powered device based on (i) said measured power supply frequency at the direct current-powered dev

Assignees

• IBM
• Univ Brunei Darussalam

Inventors

• Charbiwala Zainul
• Ghai Sunil
• Seetharamakrish Devasenapathi P
• Mylavarapu Swarnalatha
• Ming Lim Chee

Classifications

• H02J7/34 Primary

  Parallel operation in networks using both storage and other DC sources, e.g. providing buffering (H02J7/14 takes precedence) · CPC title

• H02J9/062

  for AC powered loads · CPC title

• H02J3/34

  Arrangements for transfer of electric power between networks of substantially different frequency · CPC title

• B60L55/00

  Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements · CPC title

• H02J3/38

  Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel · CPC title