Motor control device
US-2015326151-A1 · Nov 12, 2015 · US
Motor drive
US9455652B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9455652-B2 |
| Application number | US-201314441134-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 31, 2013 |
| Priority date | Jan 31, 2013 |
| Publication date | Sep 27, 2016 |
| Grant date | Sep 27, 2016 |
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Abstract
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If a bus current a bus current detector 11 detects exceeds a current cutoff value, an overcurrent detector 12 supplies a gate driver 14 with an open signal for turning off switching elements 5 - 10 to break the current to a motor 1 . Besides, when the overcurrent detector 12 detects an overcurrent, a feedback controller 15 provides the gate driver 14 with a short-circuit braking instruction to apply short-circuit braking after breaking the power supply, and to restart PWM control from a state in which the short-circuit braking is being applied and the duty ratio command value is reset at 0.
First claim
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What is claimed is: 1. A motor drive that controls a motor by carrying out PWM control of switching elements in accordance with a reference value, the motor drive comprises: an overcurrent detector that detects an overcurrent by comparing a bus current flowing through a bus with a current cutoff threshold; a feedback controller that calculates a duty ratio command value in accordance with the reference value; and a gate driver that supplies power to the motor by controlling du…
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Frequently asked questions
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- What does patent US9455652B2 cover?
- If a bus current a bus current detector 11 detects exceeds a current cutoff value, an overcurrent detector 12 supplies a gate driver 14 with an open signal for turning off switching elements 5 - 10 to break the current to a motor 1 . Besides, when the overcurrent detector 12 detects an overcurrent, a feedback controller 15 provides the gate driver 14 with a short-circuit braking …
- Who is the assignee on this patent?
- Ueno Tomohiro, Onishi Yoshitaka, Kawamura Satoshi, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification H02P6/24. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Sep 27 2016 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).