Sensorless motor braking system
US-2017359006-A1 · Dec 14, 2017 · US
Motor drive system control apparatus
US9178449B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9178449-B2 |
| Application number | US-201113579143-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 11, 2011 |
| Priority date | Jan 11, 2011 |
| Publication date | Nov 3, 2015 |
| Grant date | Nov 3, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
A motor drive system control apparatus includes: a direct current power supply; a three-phase alternating current motor; a first power converter including switching circuits corresponding to each of three phases of the three-phase alternating current motor and a smoothing condenser disposed electrically in parallel with the switching circuits; an estimating device for estimating peak generation timing in which a peak is generated in an inter-terminal voltage VH of the smoothing condenser on the basis of at least one of an operating condition of the three-phase alternating current motor; a switching condition of the switching circuits corresponding to each of the three phases; and a controlling device for controlling a drive condition of the first power converter so the inter-terminal voltage VH (or a VH peak) in the peak generation timing decreases, for a predetermined period from start timing set in a time domain before the estimated peak generation timing.
First claim
Opening claim text (preview).
The invention claimed is: 1. A motor drive system control apparatus for controlling a motor drive system comprising: a direct current power supply; a three-phase alternating current motor; and a first power converter disposed between the direct current power supply and the three-phase alternating current motor and including switching circuits corresponding to each of three phases of the three-phase alternating current motor and a smoothing condenser disposed electrically in pa…
Assignees
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Classifications
- H02P21/36Primary
Electricity · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9178449B2 cover?
- A motor drive system control apparatus includes: a direct current power supply; a three-phase alternating current motor; a first power converter including switching circuits corresponding to each of three phases of the three-phase alternating current motor and a smoothing condenser disposed electrically in parallel with the switching circuits; an estimating device for estimating peak generation…
- Who is the assignee on this patent?
- Takamatsu Naoyoshi, Okamura Masaki, Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H02P21/36. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 03 2015 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).