Patents
US 10454396 B2: Polyphase electric motor control device
- Granted
- 2019-10-22
- Filed
- 2018-04-12 application 15951711
- Type
- Utility · 5 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A polyphase electric motor control device stores a first threshold as a duty cycle at which noise caused by a high potential-side switching element starts to overlap a first measurement period, and a second threshold as a duty cycle at which time when a low potential-side switching element is switched from on to off is after an end of a second measurement period, makes a first judgment for comparing a maximum target duty cycle with the first threshold, and a second judgment for comparing a second greatest target duty cycle with the second threshold, measures a current in the first measurement period when the maximum target duty cycle is smaller than the first threshold, and measures a current in the second measurement period when the maximum target duty cycle is greater than the first threshold and the second greatest target duty cycle is smaller than the second threshold.
Source: PVGPATDIS, file of 2026-04-10 (ipg191022.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| OMRON AUTOMOTIVE ELECTRONICS CO., LTD. 151 patents | Foreign company or organization | Ebeye, MH | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Yoji Mori | Ebeye, MH | 16 | PVGPATDIS, file of 2026-04-10 | |
| Taku Ogasawara | Ebeye, MH | 19 | PVGPATDIS, file of 2026-04-10 | |
| Satoshi Doba | Ebeye, MH | 2 | 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 | H02P6/15 | 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 |
|---|---|---|---|---|---|
| 2018-05-11 | Assignment Assignment of assignor's interest | DOBA, SATOSHI signed 2018-03-27 MORI, YOJI signed 2018-03-29 OGASAWARA, TAKU signed 2018-03-29 | OMRON AUTOMOTIVE ELECTRONICS CO., LTD. AICHI | 45776/22 | 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.