Title:
CONVERTER AND TRACTION TRANSMISSION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/128772
Kind Code:
A1
Abstract:
Provided in the present invention are a converter and a traction transmission system. By means of acquiring an operating status of a converter, an inverter and an electric motor, and/or a parameter of a cooling system, and by means of a determined target switch frequency adjustment coefficient and a converter switch frequency reference value, determining a target value for switch frequency of the converter; according to the target value for switch frequency of the converter, adjusting a carrier period of the converter, obtaining a target value for the carrier period of the converter; acquiring a voltage value and a current value of the converter, and sending same to a four-quadrant converter processor, the four-quadrant converter processor modulating the voltage value and the current value of the converter and outputting a converter modulated wave signal to an FPGA, and the FPGA adjusting the converter modulated wave signal according to the adjusted converter carrier period, obtaining a pulse signal of the converter. By means of implementing a four-quadrant converter according to a working condition, it is not necessary to stop a device, and adjustment of switch frequency is performed automatically, thereby decreasing pollution of an electrical grid by harmonic current.
Inventors:
YU SENLIN (CN)
SU PENGCHENG (CN)
WANG XIAONI (CN)
ZHAN ZHEJUN (CN)
LIANG HAIGANG (CN)
ZHANG RUIFENG (CN)
SU PENGCHENG (CN)
WANG XIAONI (CN)
ZHAN ZHEJUN (CN)
LIANG HAIGANG (CN)
ZHANG RUIFENG (CN)
Application Number:
PCT/CN2020/097883
Publication Date:
July 01, 2021
Filing Date:
June 24, 2020
Export Citation:
Assignee:
CRRC YONGJI ELECTRIC CO LTD (CN)
International Classes:
H02P27/14; H02M5/458
Foreign References:
| CN106300999A | 2017-01-04 | |||
| CN107733275A | 2018-02-23 | |||
| CN105375844A | 2016-03-02 | |||
| CN103986319A | 2014-08-13 | |||
| EP1479558A1 | 2004-11-24 | |||
| JP2008043049A | 2008-02-21 |
Other References:
DUSAN JANIK ; ZDENEK PEROUTKA ; JAN MOLNAR ; TOMAS KOMRSKA ; JAN ZAK: "Control of primary voltage-source active rectifiers of traction converter with medium-frequency transformer: Advantages of control unit combining DSP and FPGA", POWER ELECTRONICS AND MOTION CONTROL CONFERENCE (EPE/PEMC), 2012 15TH INTERNATIONAL, IEEE, 4 September 2012 (2012-09-04), pages LS4a.2 - LS4a.2-7, XP032312048, ISBN: 978-1-4673-1970-6, DOI: 10.1109/EPEPEMC.2012.6397446
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (CN)
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