Patents
US 12422875 B2: String optima for tracking equal voltage in units of strings, and solar power generation system to which same is applied
- Granted
- 2025-09-23
- Filed
- 2021-12-24 application 18269580
- Type
- Utility · 17 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A photovoltaic power generation system includes a plurality of solar cell strings each including a plurality of photovoltaic PV modules, a plurality of string optimizers each connected to an output terminal of each of the plurality of solar cell strings, an inverter configured to automatically track an MPP from an equal voltage output from each of the plurality of string optimizers, inverts a result thereof into AC power, and links the AC power to the system, wherein the string optimizer includes an input processor configured to receive input of generated power from any first solar cell string, a booster configured to boost or bypass generated power input through the input processor, and output the generated power, an output processor configured to output an output of the booster to a back end, and an MCU configured to perform MPPT in units of strings to control an operation of the booster.
Source: PVGPATDIS, file of 2026-04-10 (ipg250923.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| SMART POWER CO., LTD. 46 patents | Foreign company or organization | Gimpo-si, KR | PVGPATDIS, file of 2026-04-10 | |
| Ki Ju Park 5 patents | Foreign individual | Seoul, KR | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Ki-Ju Park | Seoul, KR | 3 | PVGPATDIS, file of 2026-04-10 | |
| Kyung Mun Lee | Busan, KR | 1 | PVGPATDIS, file of 2026-04-10 | |
| Sae Hee PARK | Seoul, KR | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G05F | Systems for regulating electric or magnetic variables | G05F1/67 | PVGPATDIS, file of 2026-04-10 |
| H02J | Electric power networks; circuit arrangements or systems for supplying or distributing electric power; systems for storing electric energy | H02J3/381 | PVGPATDIS, file of 2026-04-10 |
| H02S | Generation of electric power by conversion of infrared radiation, visible light or ultraviolet light, e.g. using photovoltaic [pv] modules | H02S40/32 | PVGPATDIS, file of 2026-04-10 |
| Y02E | Reduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution | Y02E10/56 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2023-06-26 | Assignment Assignment of assignor's interest | LEE, KYUNG MUN signed 2023-06-22 PARK, KI JU signed 2023-06-22 PARK, SAE HEE signed 2023-06-22 | SMART POWER CO., LTD. GIMPO-SI, GYEONGGI-DO PARK, KI JU SEOUL | 64052/724 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.