Inverter control apparatus and control method thereof
US-2015381095-A1 · Dec 31, 2015 · US
Power conversion device
US8988909B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8988909-B2 |
| Application number | US-201013581117-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 25, 2010 |
| Priority date | Feb 25, 2010 |
| Publication date | Mar 24, 2015 |
| Grant date | Mar 24, 2015 |
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Abstract
Official abstract text for this publication.
A power conversion device includes a main circuit unit (direct-current main circuit) that converts direct-current power into alternating-current power, and a control unit that controls the direct-current main circuit. The direct-current main circuit includes a voltage detector (detector) that detects a capacitor voltage and a discharge circuit that discharges energy accumulated in a capacitor. The control unit includes a detection circuit that estimates a capacitor voltage during a normal operation based on a voltage transmitted from the voltage detector in a state where the main circuit unit is disconnected from a power supply and that detects a sign that a short circuit fault occurs in the capacitor, and a control circuit that outputs a control signal for controlling the discharge circuit to operate when the control circuit receives a detection signal from the detection circuit.
First claim
Opening claim text (preview).
The invention claimed is: 1. A power conversion device comprising: a direct-current main circuit that converts direct-current power into alternating-current power; and a control unit that controls the direct-current main circuit, wherein the direct-current main circuit includes a capacitor that constitutes the direct-current main circuit, a detector that detects a voltage of the capacitor, and a first discharge circuit that includes the capacitor and a first resistor, and th…
Assignees
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Physics · mapped topic
Operations & Transport · mapped topic
- H02M7/48Primary
Electricity · mapped topic
Physics · mapped topic
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US8988909B2 cover?
- A power conversion device includes a main circuit unit (direct-current main circuit) that converts direct-current power into alternating-current power, and a control unit that controls the direct-current main circuit. The direct-current main circuit includes a voltage detector (detector) that detects a capacitor voltage and a discharge circuit that discharges energy accumulated in a capacitor. …
- Who is the assignee on this patent?
- Murahashi Akihiro, Mitsubishi Electric Corp
- What technology area does this patent fall under?
- Primary CPC classification H02M7/48. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 24 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).