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Motor driving device having reactive current instruction generating unit
US9048733B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9048733-B2 |
| Application number | US-201213595042-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 27, 2012 |
| Priority date | Oct 25, 2011 |
| Publication date | Jun 2, 2015 |
| Grant date | Jun 2, 2015 |
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Abstract
Official abstract text for this publication.
A motor driving device includes a converter that converts an input alternating current into a direct current, an inverter that inverts the direct current output by the converter into an alternating current for driving a motor, a voltage detecting unit that detects a voltage on a direct current output side of the converter, and a numerical control unit that causes the inverter to output a reactive current to increase electric power consumed in the motor, when the voltage detected by the voltage detecting unit exceeds a predetermined threshold.
First claim
Opening claim text (preview).
The invention claimed is: 1. A motor driving device, comprising: a converter configured to convert an input alternating current into a direct current; a plurality of inverters connected to the converter in parallel and each configured to invert the direct current output by the converter into an alternating current for driving each of a plurality of motors respectively connected to the plurality of inverters; a voltage detecting unit configured to detect a voltage on a direct c…
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Electricity · mapped topic
- H02M1/32Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9048733B2 cover?
- A motor driving device includes a converter that converts an input alternating current into a direct current, an inverter that inverts the direct current output by the converter into an alternating current for driving a motor, a voltage detecting unit that detects a voltage on a direct current output side of the converter, and a numerical control unit that causes the inverter to output a reacti…
- Who is the assignee on this patent?
- Iwashita Yasusuke, Ogawa Hajime, Fanuc Corp
- What technology area does this patent fall under?
- Primary CPC classification H02M1/32. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 02 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).