Method for operating a multiphase electric machine and corresponding multiphase electric machine
US-2016043676-A1 · Feb 11, 2016 · US
Method for determining an offset of an angular position encoder on a rotor shaft of an electric machine
US11652430B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11652430-B2 |
| Application number | US-202016861535-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 29, 2020 |
| Priority date | Apr 30, 2019 |
| Publication date | May 16, 2023 |
| Grant date | May 16, 2023 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A method for determining an offset of an angular position encoder is associated with a rotor of an electric machine, wherein a reference offset of a reference angular position encoder of a reference electric machine is known at a reference rotational speed and a reference current with a reference phase angle and a reference absolute value. The method includes the steps of applying a current having the reference absolute value; setting a phase angle of the current to achieve the reference rotational speed; comparing the phase angle with the reference phase angle and the reference offset; and determining the offset on the basis of this comparison.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for determining an offset of an angular position encoder, which is associated with a rotor of an electric machine, wherein a reference offset of a reference angular position encoder of a reference electric machine is known at a reference rotational speed and at a reference current with a reference phase angle and a reference absolute value, said method comprising the following steps: applying a current having the reference absolute value; setting a phase angle of the current to achieve the reference rotational speed; comparing the phase angle with the reference phase angle and the reference offset; and determining the offset on a basis of this comparison, wherein the offset is determined at two different reference rotational speeds and a mean value is formed. 2. The method according to claim 1 , wherein the reference rotational speeds have the same absolute value, but are in different rotation directions. 3. The method according to claim 1 , wherein applying the current as an end-of-line test in a case of series production. 4. A method for determining an offset of an angular position encoder, which is associated with a rotor of an electric machine, wherein a reference offset of a reference angular position encoder of a reference electric machine is known at a reference rotational speed and at a reference current with a reference phase angle and a reference absolute value, said method comprising the following steps: applying a current having the reference absolute value; setting a phase angle of the current to achieve the reference rotational speed; comparing the phase angle with the reference phase angle and the reference offset; and determining the offset on a basis of this comparison, wherein the reference rotational speed lies in a range between one third and two thirds of a nominal motor rotational speed.
Assignees
Inventors
Classifications
Calibrating encoders · CPC title
Correction of gain, threshold, offset or phase control · CPC title
Incremental encoders having reference marks · CPC title
- G01B7/003Primary
for measuring position, not involving coordinate determination (coordinate measuring G01B7/004) · CPC title
- H02P6/17Primary
and for generating speed information · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11652430B2 cover?
- A method for determining an offset of an angular position encoder is associated with a rotor of an electric machine, wherein a reference offset of a reference angular position encoder of a reference electric machine is known at a reference rotational speed and a reference current with a reference phase angle and a reference absolute value. The method includes the steps of applying a current hav…
- Who is the assignee on this patent?
- Valeo Siemens Eautomotive Germany Gmbh
- What technology area does this patent fall under?
- Primary CPC classification G01B7/003. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue May 16 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).