KR-102963314-B1 - LOW-POWER UTILIZATION CONTROLLER INCREASING AVAILABLE TARGET POWER TIME OF PHOTOVOLTAIC GENERATOR AND OPERATING METHOD THEREOF

Abstract

The present invention relates to a low-power utilization controller and a method of operation for increasing the usable target power time of a solar power generator, wherein the controller may include a sensor for detecting power below the target power with respect to power generated from a solar power generator, a storage unit including a capacitor and a battery for storing power below the target power, and a control unit for controlling the storage unit so that power stored in the storage unit is output during the incoming and outgoing intervals of the solar power generator. This invention was derived during the course of research on a 'controller and portable solar power generator for improving the available power generation capacity of a solar power generator under low light conditions,' and was developed as a technical means to achieve the objectives of the said research project. National R&D project that supported this invention Assignment No.: D2409018 Department Name: Gyeonggi Economic & Science Promotion Agency Project Management Agency: Gyeonggi Economic & Science Promotion Agency Research Project Name: Gyeonggi-do Technology Development Project Research Project Title: Controller and Portable Solar Power Generator for Improving Low-Light Available Power Generation of Photovoltaic Generators Project Performing Organization Name: SIDHUB Co., Ltd. Project Period: 2024.08.01~2025.07.31

Inventors

• 권오종

Assignees

• 주식회사 에스아이디허브

Dates

Publication Date

20260511

Application Date

20250227

Claims (1)

1. Regarding the controller: A sensor that detects power below the target power for power generated from a solar power generator; A storage unit including a capacitor and a battery for storing power less than the target power; and It includes a control unit that controls the storage unit so that power stored in the storage unit is output during the forward and backward interval of the solar power generator, and The above advance/retreat interval is one hour before and after the available time of the above solar power generator, and The above control unit is: Storing power less than the target power in the above storage unit; During the above advance/retreat interval, the power stored in the storage unit is added to the power generated from the solar power generator, thereby controlling the output of power from the solar power generator to be greater than or equal to the target power; Identifying the start time of operation of the solar power generator through the above sensor; When the above operation time is identified, control is performed so that power less than the target power generated from the solar power generator from the operation time is stored in the storage unit; If it is determined that the power generated from the above solar power generator has been output for a critical time or longer at 70% or more of the target power, it is determined that the advance/retreat section has started, and the power stored in the above storage unit is added to the power generated from the above solar power generator; Monitoring the real-time storage amount of the above storage unit; If the above real-time storage amount is less than a threshold, and the magnitude of the power generated from the solar power generator exceeds the target power, a certain percentage of the power exceeding the target power is stored in the storage unit; The above control unit is: Monitoring the real-time storage amount of the above storage unit; If it is determined that the advance/retreat interval has started, calculate the expected end time at which the advance/retreat interval is expected to end; Based on real-time storage amount and target power, calculate the power shortage time period during which output from the solar power generator is expected to be interrupted; If the power shortage time period is not calculated, or if the power shortage time period is calculated after the above-mentioned expected end time, during the advance/retreat interval, the power stored in the storage unit is added to the power generated from the solar power generator; If the power shortage period is calculated to be prior to the above-mentioned expected end time, the start time of the advance/retreat interval is recalculated based on the time length of the power shortage period, the real-time storage amount, and the target power; The power generated from the solar power generator up to the above-recalculated starting point is stored in the storage unit; From the above recalculated starting point, the power stored in the storage unit is added to the power generated from the solar power generator, and The above controller includes a step-up unit comprising a plurality of step-up elements, which passes power through each of the plurality of step-up elements to step up the voltage at a constant step-up ratio. The above control unit is: If the power shortage time period is calculated to be after the above-mentioned expected end time, and the real-time storage amount is below the threshold, calculate the boosted power by applying the above-mentioned boost ratio to the real-time storage amount; Based on the above boosted power and the magnitude of the power identified as being below the above target power, the power shortage time period is recalculated; If the above-recalculated power shortage time period is longer than the critical time, the power generated during the advance/return interval is stored in the above-record storage unit. Controller.

Description

Low-Power Utilization Controller and Operating Method for Responding to Power Shortage and Adjusting Boost Output of Photovoltaic Generator The present invention relates to a low-power utilization controller and an operation method for responding to power shortages and adjusting boost output of a photovoltaic generator. The usable time of electricity generated from conventional solar power generators is 3 to 4 hours per day, because the time during which generated power is output above the stable target power required by the inverter is limited. Generally, the one hour before and after the electricity generation time is close to the target power that is actually usable, but it is power that cannot be used and is wasted because it is below the target power set in the inverter. In this institution, the one hour before and after this electricity availability time is defined as the entry and exit interval (entry and exit interval). Assuming that power below the target power stored in advance is supplied during the entry and exit interval, if about 100W of power is stored in the controller, the power generated during the entry and exit interval of about 90 minutes to 2 hours can be utilized as a usable time above the target power, thereby increasing the total available generation time per day. Meanwhile, the matters described above as background technology are intended only to enhance understanding of the background of the present invention and should not be construed as an acknowledgment that they constitute prior art already known to those skilled in the art. FIG. 1 illustrates a system according to an embodiment of the present invention. FIG. 2 illustrates a controller according to an embodiment of the present invention. FIG. 3 is a basic operation flowchart of a controller according to an embodiment of the present invention. FIG. 4 is a system configuration diagram according to another embodiment of the present invention. The drawings above are provided as examples to ensure that the concept of the present invention is sufficiently conveyed to those skilled in the art. Accordingly, the present invention is not limited to the drawings presented below and may be embodied in other forms. In addition, the same reference numbers throughout the specification represent the same components. In addition, please note that in the drawings above, specific parts have been enlarged or reduced without proportion to the scale to aid understanding. Various embodiments are now described with reference to the drawings. In this specification, various descriptions are provided to facilitate understanding of the present invention. However, it is evident that these embodiments can be practiced without such specific descriptions. As used herein, terms such as “component,” “module,” “system,” etc. refer to computer-related entities, hardware, firmware, software, combinations of software and hardware, or executions of software. For example, a component may be, but is not limited to, a procedure, processor, object, execution thread, program, and/or computer running on a processor. For example, both an application running on an electronic device and the electronic device itself may be a component. One or more components may reside within a processor and/or execution thread. A component may be localized within a single computer. A component may be distributed among two or more computers. Additionally, these components may be executed from various computer-readable media having various data structures stored therein. Components may communicate through local and/or remote processes, for example, according to signals having one or more data packets (e.g., data from a component interacting with another component in a local system or distributed system, and/or data transmitted through signals to other systems and networks such as the Internet). Furthermore, the term "or" is intended to mean an implicit "or" rather than an exclusive "or." That is, unless otherwise specified or evident from the context, "X uses A or B" is intended to mean one of the natural implicit substitutions. In other words, if X uses A; if X uses B; or if X uses both A and B, "X uses A or B" may apply to any of these cases. Additionally, the term "and/or" as used herein should be understood to refer to and include all possible combinations of one or more of the enumerated related items. Additionally, the terms “comprising” and/or “comprising” should be understood to mean that such features and/or components are present. However, the terms “comprising” and/or “comprising” should be understood not to exclude the presence or addition of one or more other features, components and/or groups thereof. Furthermore, unless otherwise specified or clearly evident from the context to indicate a singular form, the singular in this specification and claims should generally be interpreted to mean “one or more.” And, the term "at least one of A or B" should be interpreted to mean "a cas