Patents
US 11999241 B2: Hybrid system to overhaul a DC locomotive
- Granted
- 2024-06-04
- Filed
- 2021-10-04 application 17493460
- Type
- Utility · 19 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A locomotive, a first chopper circuit, and a second chopper circuit integrating a traction motor with an energy storage device are disclosed. The locomotive includes a prime mover, an energy management device, a DC power bus, a traction motor, an energy storage device, a resistor grid, and a chopper circuit. Each chopper circuit is controlled by the energy management device and includes a plurality of power semiconductors with variable switching frequency. The traction motor may be capable of operating in a motoring mode, where power is controllably supplied by either the prime mover and/or the energy storage device; and a dynamic braking mode, where generated power is controllably allocated to the energy storage device and/or the resistor grid.
Source: PVGPATDIS, file of 2026-04-10 (ipg240604.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Progress Rail Services Corporation 113 patents | US company or organization | Albertville, AL | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Sidarta Fornari Beltramin | Curitiba, BR | 14 | PVGPATDIS, file of 2026-04-10 | |
| Guilherme Martini | Curitiba, BR | 2 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| 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 | B60L15/2045 | PVGPATDIS, file of 2026-04-10 |
| B61C | Locomotives; motor railcars | B61C3/02 | PVGPATDIS, file of 2026-04-10 |
| H02P | Control or regulation of electric motors, electric generators or dynamo-electric converters; controlling transformers, reactors or choke coils | H02P7/298 | 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 |
|---|---|---|---|---|---|
| 2021-10-04 | Assignment Assignment of assignor's interest | BELTRAMIN, SIDARTA signed 2021-10-01 MARTINI, GUILHERME signed 2021-10-01 | PROGRESS RAIL SERVICES CORPORATION ALBERTVILLE, AL | 57693/759 | 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.