Search International and National Patent Collections
Some content of this application is unavailable at the moment.
If this situation persists, please contact us atFeedback&Contact
1. (WO2017096344) AUTONOMOUS CHARGE BALANCING OF DISTRIBUTED AC COUPLED BATTERIES WITH DROOP OFFSET
Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

CLAIMS:

1 . An apparatus for autonomous charge balancing of an energy storage device of a microgrid, comprising:

the energy storage device; and

a power conditioner, coupled to the energy storage device, comprising a droop control module for operating the power conditioner, during an autonomous mode of operation, such that the state of charge of the energy storage device is autonomously driven toward the state of charge of at least one other energy storage device of the microgrid.

2. The apparatus of claim 1 , wherein operating the power conditioner such that the state of charge of the energy storage device is autonomously driven toward the state of charge of at least one other energy storage device of the microgrid comprises operating the power conditioner to have a droop offset based on the state of charge of the energy storage device.

3. The apparatus of claim 2, wherein the droop offset is further based on a predetermined state of charge target.

4. The apparatus of claim 2, wherein the droop offset is inversely proportional to state of charge of the energy storage device.

5. The apparatus of claim 2, wherein the power conditioner is a DC-AC inverter.

6. The apparatus of claim 5, wherein the DC-AC inverter is a voltage forming inverter.

7. The apparatus of claim 5, wherein the DC-AC inverter is a current feeding inverter.

8. The apparatus of any of claims 1 -7, wherein the energy storage device is a hattaj-y

9. The apparatus of any of claims 1 -8, further comprising at least one additional power conditioner coupled to the power conditioner via a power bus and coupled to a corresponding energy source.

10. The apparatus of claim 9, wherein the corresponding energy source is a renewable energy source.

1 1 . The apparatus of claim 10, wherein the corresponding energy source is a photovoltaic (PV) module.