Energy storage system and method thereof
AssigneeSamsung SDI Co., Ltd.
InventorSungchun Cho
Life of this patent
Estimating the term…
Abstract
An energy storage system (ESS) and a method thereof are disclosed. The system includes a maximum power tracking control unit changing a controlled variable for maximum power point extraction in proportion to an hourly current and power slope of the power generating unit, setting the change amount of the controlled variable to be relatively large if the hourly current and power slope is out of a predetermined hourly current and power slope range, and setting the change amount of the controlled variable to be relatively small if the hourly current and power slope is within a predetermined hourly current and power slope range, and a maximum power extracting unit extracting and converting a maximum power from the power generating unit in response to a control of the maximum power tracking control unit.
Claims20
An energy storage system (ESS) for tracking and extracting a maximum power from a power generating unit, the system comprising:
- a maximum power tracking control unit changing a controlled variable for maximum power point extraction in proportion to an hourly current and power slope of the power generating unit, setting a change amount of the controlled variable to be relatively large if the hourly current and power slope is outside a predetermined hourly current and power slope range, and setting the change amount of the controlled variable to be relatively small if the hourly current and power slope is within the predetermined hourly current and power slope range;
- and
- a maximum power extracting unit extracting and converting a maximum power from the power generating unit using the controlled variable changed by the maximum power tracking control unit.
A method of tracking a maximum power point from a power generating unit, the method comprising:
- sensing an input current and an input voltage provided from the power generating unit;
- calculating an hourly current and power slope from the input current and the input voltage;
- determining whether the calculated hourly current and power slope is within a predetermined hourly current and power slope range;
- setting a change amount of a controlled variable for extracting a maximum power from the power generating unit to be relatively small when the calculated hourly current and power slope is within the predetermined hourly current and power slope range;
- and
- setting the change amount of the controlled variable for extracting a maximum power from the power generating unit to be relatively large when the calculated hourly current and power slope is outside the predetermined hourly current and power slope range.
Dependencies are inferred from the claim text.