SYSTEM FOR PRECHARGING DC LINK IN VARIABLE SPEED DRIVE

Title:

SYSTEM FOR PRECHARGING DC LINK IN VARIABLE SPEED DRIVE

Document Type and Number:

Japanese Patent JP2012105542

Kind Code:

A

Abstract:

To provide a variable speed drive with a converter that is controllable to precharge a DC link.

A variable speed drive 104 also includes an inverter. A converter 202 converts AC power from an AC power source into DC power. The DC link filters the DC power from the converter. Finally, the inverter is connected in parallel with the DC link and converts the DC power from the DC link into variable-frequency variable-voltage AC power. The converter includes a plurality of pairs of power switches, where each pair of power switches includes a reverse blocking power switch arrangement 650A, 652B connected in anti-parallel to another reverse blocking power switch arrangement 652A, 650B. A switching signal is provided by a control panel for a first reverse blocking power switch and a second reverse blocking power switch based on a pulse-width modulation technique, and the first reverse blocking power switch and the second reverse blocking power switch are switched between ON and OFF positions to precharge the DC link.

Inventors:

HAROLD R SCHNECKE

Application Number:

JP2012000892A

Publication Date:

May 31, 2012

Filing Date:

January 06, 2012

Export Citation:

Click for automatic bibliography generation Help

Assignee:

YORK INTERNATL CORP

International Classes:

H02P27/06; H02M7/12; H02M7/48

Domestic Patent References:

JP4741009B2	2011-08-03
JP2003164140A	2003-06-06
JP2003289675A	2003-10-10
JP2004242418A	2004-08-26
JPH07502160A	1995-03-02
JP2005509388A	2005-04-07
JP2003500989A	2003-01-07

Foreign References:

WO2004098038A1	2004-11-11
US5977569A	1999-11-02

Other References:

KLUMPNER, C. ; BLAABJERG, F.: "Using reverse blocking IGBTs in power converters for adjustable speed drives", CONFERENCE RECORD OF THE 2003 IEEE INDUSTRY APPLICATIONS CONFERENCE 38TH IAS ANNUAL MEETING, vol. 3, JPN6010052920, October 2003 (2003-10-01), US, pages 1516 - 1523, XP010676196, ISSN: 0002696079, DOI: 10.1109/IAS.2003.1257757
JUE WANG ; WILLIAMS, B.W. ;: "Evaluation of high-voltage 4H-SiC switching devices", IEEE TRANSACTIONS ON ELECTRON DEVICES, vol. Volume:46, Issue:3, JPN6010052921, March 1999 (1999-03-01), US, pages 589 - 597, ISSN: 0002696080
CHINTHAVALI, M.S. ; TOLBERT, L.M. ; OZPINECI, B. ;: "4H-SiC GTO thyristor and p-n diode loss models for HVDC converter", INDUSTRY APPLICATIONS CONFERENCE, 2004. 39TH IAS ANNUAL MEETING. CONFERENCE RECORD OF THE 2004 IEEE, vol. 2, JPN6010052922, October 2004 (2004-10-01), US, pages 1238 - 1243, XP010735163, ISSN: 0002696081, DOI: 10.1109/IAS.2004.1348571

Attorney, Agent or Firm:

Shinjiro Ono
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Fumitoshi Nishiyama

Previous Patent: 新規ヒノキ花粉アレルゲン

Next Patent: STATOR FOR ELECTRIC MOTOR