Methods, systems, and computer readable media for managing the distribution of power from a photovoltaic source in a multiple-floor building

Patent metadata

Field	Value
Publication number	US-9853536-B2
Application number	US-201314139728-A
Country	US
Kind code	B2
Filing date	Dec 23, 2013
Priority date	Dec 23, 2013
Publication date	Dec 26, 2017
Grant date	Dec 26, 2017

Abstract

Methods, systems, and computer readable media for managing the distribution of photovoltaic power in a multi-floor building are disclosed. According to one aspect, a method includes determining power requirements for each of a plurality of loads associated with a respective plurality of floors in a multi-floor building, wherein each of the plurality of floors includes a direct current (DC) distribution bus. The method further includes using a PV converter to supply a power output from a PV source to one or more of the plurality of loads via one or more respective DC distribution buses, wherein the power output is supplied to the one or more of the plurality of loads in an order such that each subsequent load is supplied at least a remaining portion of the power output after the power requirements of a previously supplied load is fully satisfied.

First claim

What is claimed is:

1. A method for managing the distribution of photovoltaic (PV) power in a multi-floor building, the method comprising:
determining power requirements for each of a plurality of loads associated with a respective plurality of floors in a multi-floor building, wherein each of the plurality of floors includes a direct current (DC) distribution bus;
determining whether a PV source located at the multi-floor building is able to supply a power output that meets the power requirements of all of the plurality of loads;
using a PV converter to supply the power output entirely from the PV source to the plurality of loads in the event the power output meets or exceeds the power requirements of all of the plurality of loads;
in the event the PV source is determined as being unable to supply the power output that meets the power requirements of all of the plurality of loads in the multi-floor building, using the PV converter to supply the power output from the PV source to one or more of the plurality of loads via one or more respective DC distribution buses, wherein the power output is supplied to the one or more of the plurality of loads in an order such that each subsequent load is supplied a portion of the power output after the power requirement of a previously supplied load is fully satisfied, wherein the PV converter is configured to provide the power output to each of the DC distribution buses via a direct connection on each of the plurality of floors; and
wherein the plurality of floors is equal to N floors, and the topmost floor of the multi-floor building is the N th floor, wherein the power output is first supplied to a load associated with the N th floor, and wherein the power output is distributed to fully supply the loads associated with the N th floor and M floors below the N th floor, M being an integer equal to a number of floors with loads capable of being fully supplied by the power output, and a remainder of the power output is used to partially supply a load associated with a floor M+1 floors below the N th floor.

2. The method of claim 1 wherein loads associated with floors 0 through (N−M−1) in the multi-floor building are supplied with DC power that is converted from alternating current (AC) power originating from an AC power grid.

3. The method of claim 1 wherein the power output from the PV source is converted to at least one of direct current (DC) power and alternating current (AC) power by the PV converter located at the multi-floor building.

4. The method of claim 3 wherein the power output from the PV source converted by the PV converter is utilized as an uninterruptible power supply (UPS) for the multi-floor building.

5. The method of claim 1 wherein the one or more DC distribution buses are respectively connected to one or more power outputs of the PV converter.

6. The method of claim 1 wherein the remaining portion of the power output is fed to a battery storage unit if the power requirements of each of the plurality of loads is satisfied.

7. The method of claim 1 wherein the remaining portion of the power output is fed to an alternating current (AC) power grid if the power requirements of each of the plurality of loads is satisfied.

8. A system for managing the distribution of photovoltaic (PV) power in a multi-floor building, the system comprising:
a plurality of direct current (DC) distribution buses for distributing a power output from a PV source to a plurality of loads associated with a respective plurality of floors in a multi-floor building;
a PV controller unit configured to determine power requirements for each of the plurality of loads and to determine whether a PV source located at the multi-floor building is able to supply a power output that meets the power requirements of all of the plurality of loads;
a PV converter configured to supply the power output entirely from the PV source to the plurality of loads in the event the power output meets or exceeds the power requirements of all of the plurality of loads and to supply the power output from the PV source to one or more of the plurality of loads via one or more of the plurality of DC distribution buses in the event the PV source is determined as being unable to supply the power output that meets the power requirements of all of the plurality of loads in the multi-floor building, wherein the power output is supplied to the one or more of the plurality of loads in an order such that each subsequent load is supplied at least a remaining portion of the power output after the power requirements of previously supplied loads are fully satisfied, wherein the PV converter is configured to provide the power output to each of the DC distribution buses via a direct connection on each of the plurality of floors; and
wherein the plurality of floors is equal to N floors, and the topmost floor of the multi-floor building is the N th floor, wherein the power output is first supplied to a load associated with the N th floor, and wherein the power output is distributed to fully supply the loads associated with the N th floor and M floors below the N th floor, M being an integer equal to a number of floors with loads capable of being fully supplied by the power output, and a remainder of the power output is used to partially supply a load associated with a floor M+1 floors below the N th floor.

9. The system of claim 8 wherein loads associated with floors 0 through (N−M−1) in the multi-floor building are supplied with DC power that is converted from alternating current (AC) power originating from an AC power grid.

10. The system of claim 8 wherein the PV converter is further configured to convert the power output from the PV source to at least one of direct current (DC) power and alternating current (AC) power and is located at the multi-floor building.

11. The system of claim 10 wherein the power output from the PV source converted by the PV converter is utilized as an uninterruptible power supply (UPS) for the multi-floor building.

12. The system of claim 8 wherein the one or more DC distribution buses are respectively connected to one or more power outputs of the PV converter.

13. The system of claim 8 wherein the remaining portion of the power output is fed to a battery storage unit if the power requirements of each of the plurality of loads is satisfied.

14. The system of claim 8 wherein the remaining portion of the power output is fed to an alternating current (AC) power grid if the power requirements of each of the plurality of loads is satisfied.

15. A non-transitory computer readable medium having stored thereon executable instructions for controlling a computer to perform steps comprising:
determining power requirements for each of a plurality of loads associated with a respective plurality of floors in a multi-floor building, wherein each of the plurality of floors includes a direct current (DC) distribution bus; determining whether a PV source located at the multi-floor building is able to supply a power output that meets the power requirements of all of the plurality of loads;
using a PV converter to supply the power output entirely from the PV source to the plurality of loads in the event the power output meets or exceeds the power requirements of all of the plurality of loads;
in the event the PV source is determined as being unable to supply the power output that meets the power requirements of all of the plurality of loads in the multi-floor building, using the PV converter to supply the power output from the PV source to one or more of the plurality of loads via one or more respective DC distri

Assignees

• Abb Schweiz Ag

Inventors

• Xu Jing
• Wang Zhenyuan
• Li Jun
• Arshad Waqas

Classifications

• H02J2101/24

  Photovoltaics · CPC title

• H02J1/08

  Three-wire DC power distribution systems; Systems having more than three wires · CPC title

• H02J7/35

  with light sensitive cells · CPC title

• H02J4/00

  Circuit arrangements for mains or distribution networks not specified as AC or DC; Circuit arrangements for mains or distribution networks combining AC and DC sections or sub-networks (arrangements using intermediate DC-AC-DC conversion H02J1/002; arrangements using high-voltage DC [HVDC] links H02J3/36) · CPC title

• Y02E10/566

  Cross-Sectional Technologies · mapped topic