# US 2014/0153300 A1 · Power conversion apparatus

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- Number: US 2014/0153300 A1
- Document ID: US20140153300A1
- Status: Published application
- Kind: A1
- Application number: 14/093,813
- Filed: 2013-12-02
- Published: 2014-06-05
- Earliest claimed: 2012-12-04
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics Co., Ltd.
- Inventors: Keisuke MORI
- Web page: https://patentgrep.com/patent/US20140153300A1

## CPC

- H02M 5/458: using semiconductor devices only
- H02M 5/42: by static converters
- H02M 7/003: {Constructional details, e.g. physical layout, assembly, wiring or busbar connections}
- H02M 1/14: Arrangements for reducing ripples from DC input or output
- H02M 1/44: Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
- H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P)

## Abstract

Disclosed is a power conversion apparatus with further reduced inductance of conductors coupling condensers. The power conversion apparatus includes a smoothing circuit having first and second electrolytic condensers connected to each other in series and third and fourth electrolytic condensers connected to each other in series. The distance between a positive terminal of the first electrolytic condenser and a negative terminal of the third electrolytic condenser is shorter than the distance between the positive terminal of the first electrolytic condenser and a positive terminal of the fourth electrolytic condenser. The distance between the positive terminal of the fourth electrolytic condenser and a negative terminal of the second electrolytic condenser is shorter than the distance between the positive terminal of the fourth electrolytic condenser and the positive terminal of the first electrolytic condenser.

## Claims

### Claim 1

A power conversion apparatus comprising a smoothing circuit having first and second electrolytic condensers connected to each other in series and third and fourth electrolytic condensers connected to each other in series, wherein
a positive terminal of the first electrolytic condenser and a positive terminal of the fourth electrolytic condenser are connected to a positive potential conductor,
a negative terminal of the second electrolytic condenser and a negative terminal of the third electrolytic condenser are connected to a negative potential conductor,
a negative terminal of the first electrolytic condenser and a positive terminal of the second electrolytic condenser are connected to a common potential conductor,
a positive terminal of the third electrolytic condenser and a negative terminal of the fourth electrolytic condenser are connected to the common potential conductor,
a distance between the positive terminal of the first electrolytic condenser and the negative terminal of the third electrolytic condenser is shorter than a distance between the positive terminal of the first electrolytic condenser and the positive terminal of the fourth electrolytic condenser, and
a distance between the positive terminal of the fourth electrolytic condenser and the negative terminal of the second electrolytic condenser is shorter than a distance between the positive terminal of the fourth electrolytic condenser and the positive terminal of the first electrolytic condenser.

### Claim 2 (depends on 1)

The power conversion apparatus according to claim 1, wherein the positive potential conductor, the negative potential conductor, and the common potential conductor are prepared by a printed circuit board.

### Claim 3 (depends on 2)

The power conversion apparatus according to claim 2, further comprising a rectifier and an inverter.

### Claim 4 (depends on 3)

The power conversion apparatus according to claim 3, wherein the power conversion apparatus comprises three sets of smoothing circuits to covert three-phase power.