Patents
US 9287818 B2: Six-phase AC induction motor drive system and method therefor
- Granted
- 2016-03-15
- Filed
- 2014-06-30 application 14319519
- Type
- Utility · 31 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A drive system powers a six-phase AC induction motor having a plurality of poles and a stator with a plurality of teeth where the number of teeth divided by six times the number of poles equals an integer number. The stator core has first and second groups of three-phase stator windings. The second group of three-phase windings is separated spatially by 30 electrical degrees from the first group. A first power supply is connectable to the first group of three-phase windings. A second power supply is connectable to the second group of three-phase windings. The second power supply provides power to the second group of three-phase windings that is shifted by 30 electrical degrees in time with respect to the first power supply. The first and second power supplies receive signals from identical pulse width modulator generators. The respective first and second pulse width modulator generators receive commands from one controller.
Source: PVGPATDIS, file of 2026-04-10 (ipg160315.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Baldor Electric Company 43 patents | US company or organization | Barling, AR | BALDOR ELECTRIC CO SEC filer FUZZY low confidence: same name (legal endings aside), one of each nationally | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Mikhail D. Khanin | Barling, AR | 1 | PVGPATDIS, file of 2026-04-10 | |
| Edward Rowan | Greenwood, AR | 2 | PVGPATDIS, file of 2026-04-10 | |
| Zhiguo Pan | Cary, NC | 25 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H02P | Control or regulation of electric motors, electric generators or dynamo-electric converters; controlling transformers, reactors or choke coils | H02P25/22 | PVGPATDIS, file of 2026-04-10 |
| H02K | Dynamo-electric machines | H02K1/278 | 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 |
|---|---|---|---|---|---|
| 2026-09-28 | Assignment Assignment of assignor's interest | ABB MOTORS AND MECHANICAL, INC. signed 2026-06-08 | ABB SCHWEIZ AG BADEN | 76167/619 | PASDL, file of 2026-10-15 |
| 2026-08-05 | Name change Change of name | BALDOR ELECTRIC COMPANY signed 2018-02-26 | ABB MOTORS AND MECHANICAL INC. FORT SMITH, AR | 76152/651 | PASDL, file of 2026-10-15 |
| 2014-06-30 | Assignment Assignment of assignor's interest | PAN, ZHIGUO signed 2014-06-25 KHANIN, MIKHAIL D. signed 2014-06-27 ROWAN, EDWARD N. signed 2014-06-27 | BALDOR ELECTRIC COMPANY FORT SMITH, AR | 33212/440 | 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.