Patents
US 12706536 B2: 2-level buck-boost DC-to-DC converters with virtual grounds
- Granted
- 2026-08-11
- Filed
- 2023-05-01 application 18310137
- Type
- Utility · 36 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A conversion circuit is disclosed and includes a DC link, a first DC-to-DC converter, an inverter and a second inverter. The DC link includes DC link rails. The first DC-to-DC converter includes a first phase leg and a second phase leg. The first reactor is connected between a first center terminal of the first phase leg and at least one energy storage module. The second reactor is connected between a second center terminal of the second phase leg and the at least one energy storage module. The first reactor, the at least one energy storage module and the second reactor are connected in series between the first center terminal and the second center terminal such that the first DC-to-DC converter has a virtual ground.
Source: PTBLXML, file of 2026-08-11 (ipgb20260811.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| KOMATSU AMERICA CORP. 19 patents | US company or organization | Chicago, IL | PTBLXML, file of 2026-08-11 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Gerald Murray Brown | Cedarville, OH | PTBLXML, file of 2026-08-11 | ||
| Hossein Dehnavifard | Pittsburgh, PA | PTBLXML, file of 2026-08-11 | ||
| Muhammad Barkat Saifee | Peoria, IL | PTBLXML, file of 2026-08-11 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H02M | Apparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems; conversion of dc or ac input power into surge output power; control or regulation thereof | H02M3/1582 | PTBLXML, file of 2026-08-11 |
| B60L | Propulsion of electrically-propelled vehicles ; supplying electric power for auxiliary equipment of electrically-propelled vehicles ; electrodynamic brake systems for vehicles in general ; magnetic suspension or levitation for vehicles; monitoring operating variables of electrically-propelled vehicles; electric safety devices for electrically-propelled vehicles | B60L53/22 | PTBLXML, file of 2026-08-11 |
| H02J | Electric power networks; circuit arrangements or systems for supplying or distributing electric power; systems for storing electric energy | H02J7/50 | PTBLXML, file of 2026-08-11 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2023-05-17 | Assignment Assignment of assignor's interest | BROWN, GERALD MURRAY signed 2023-05-17 DEHNAVIFARD, HOSSEIN signed 2023-04-12 SAIFEE, MUHAMMAD BARKAT signed 2023-04-14 | KOMATSU AMERICA CORP. CHICAGO, IL | 63671/292 | PASDL, file of 2026-08-13 |
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.