Bridgeless power factor correction circuit
US-2015162822-A1 · Jun 11, 2015 · US
Bridgeless power factor correction circuit having a snubber circuit
US10389232B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10389232-B2 |
| Application number | US-201816134312-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 18, 2018 |
| Priority date | Sep 22, 2017 |
| Publication date | Aug 20, 2019 |
| Grant date | Aug 20, 2019 |
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- Title
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- Abstract
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Abstract
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A bridgeless power factor correction circuit includes: a first leg composed of a series circuit with a first rectifier and a first switch; a second leg that is composed of a series circuit with a second rectifier and a second switch and is connected in parallel to the first leg; a smoothing capacitor connected in parallel to the first leg; a snubber circuit that is connected between a first connection point, which is located between the first rectifier and the first switch and is connected via a first inductor to one end of an AC power supply, and a second connection point, which is located between the second rectifier and the second switch and is connected via a second inductor to another end of the AC power supply; and a control circuit that executes on/off control of the first switch and the second switch.
First claim
Opening claim text (preview).
What is claimed is: 1. A bridgeless power factor correction circuit having a snubber circuit, comprising: a first leg composed of a series circuit with a first rectifier and a first switch; a second leg that is composed of a series circuit with a second rectifier and a second switch and is connected in parallel to the first leg; a smoothing capacitor connected in parallel to the first leg; a snubber circuit that is a two-terminal circuit having only two terminal ends comprising only first and second terminal ends, the two-terminal circuit comprising solely a capacitor or solely a series circuit having a capacitor and a resistor, the first terminal end of the two-terminal circuit being connected solely to a first connection point, which is located between the first rectifier and the first switch in the first leg and is connected via a first inductor to one end of an AC power supply, and the second terminal end of the two-terminal circuit being connected solely to a second connection point, which is located between the second rectifier and the second switch in the second leg and is connected via a second inductor to another end of the AC power supply; and a control circuit that executes on/off control of the first switch and the second switch. 2. The bridgeless power factor correction circuit according to claim 1 , wherein the snubber circuit comprises a single snubber circuit connected between the first and second connection points.
Assignees
Inventors
Classifications
- H02M1/4208Primary
Arrangements for improving power factor of AC input · CPC title
Snubber circuits · CPC title
- H02M1/42Primary
Circuits or arrangements for compensating for or adjusting power factor in converters or inverters · CPC title
using semiconductor devices only · CPC title
Electricity · mapped topic
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- What does patent US10389232B2 cover?
- A bridgeless power factor correction circuit includes: a first leg composed of a series circuit with a first rectifier and a first switch; a second leg that is composed of a series circuit with a second rectifier and a second switch and is connected in parallel to the first leg; a smoothing capacitor connected in parallel to the first leg; a snubber circuit that is connected between a first con…
- Who is the assignee on this patent?
- Tdk Corp
- What technology area does this patent fall under?
- Primary CPC classification H02M1/4208. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Aug 20 2019 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).