Title:
METHOD FOR SUPPRESSING LOW-ORDER CURRENT HARMONICS OF FOUR-QUADRANT CONVERTER OF ELECTRIC LOCOMOTIVE
Document Type and Number:
WIPO Patent Application WO/2021/082477
Kind Code:
A1
Abstract:
The present invention relates to the field of control, and in particular, to a control algorithm for suppressing the current harmonics of a four-quadrant converter, specifically, a method for suppressing the low-order current harmonics of the four-quadrant converter of an electric locomotive. The method is a harmonic suppression method integrated in a four-quadrant control algorithm, solves the problem of the impact of the low-order current harmonics of a four-quadrant converter on the control of the converter and the pollution of the power quality of a power grid, and solves the problem of the impact of filtration of low-order harmonics by means of software filters. The method is mainly to add harmonic extraction and suppression functions to a four-quadrant converter control algorithm, without using additional hardware control circuit and device, has high adaptability and flexibility, can achieve the purpose of harmonic suppression, and also reduces design costs.
Inventors:
ZHANG RUIFENG (CN)
YU SENLIN (CN)
WANG LI (CN)
SU PENGCHENG (CN)
ZHAN ZHEJUN (CN)
LIANG HAIGANG (CN)
YU SENLIN (CN)
WANG LI (CN)
SU PENGCHENG (CN)
ZHAN ZHEJUN (CN)
LIANG HAIGANG (CN)
Application Number:
PCT/CN2020/097634
Publication Date:
May 06, 2021
Filing Date:
June 23, 2020
Export Citation:
Assignee:
CRRC YONGJI ELECTRIC CO LTD (CN)
International Classes:
H02M1/12; H02M7/797
Domestic Patent References:
| WO2019049713A1 | 2019-03-14 |
Foreign References:
| CN110829808A | 2020-02-21 | |||
| CN110729879A | 2020-01-24 | |||
| CN106227041A | 2016-12-14 | |||
| CN206962449U | 2018-02-02 |
Other References:
GANG LIU, SUN QING-WEN, XIAO YE-RAN: "Permanent magnet synchronous motor current harmonics suppression based on coordinate transformation", ELECTRIC MACHINES AND CONTROL, vol. 19, no. 5, 1 May 2015 (2015-05-01), pages 30 - 36, XP055808902, DOI: 10.15938/j.emc.2015.05.005
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (CN)
Download PDF: