Title:
POWER CONTROL-BASED METHOD FOR ANALYZING STABILITY OF PERMANENT MAGNET SYNCHRONOUS FAN ACCESSING WEAK GRID
Document Type and Number:
WIPO Patent Application WO/2022/226709
Kind Code:
A1
Abstract:
The present invention relates to a power control influence-based method for analyzing stability of a permanent magnet synchronous fan accessing a weak grid. New energy power generation generally adopts a disturbance observation method to perform maximum power tracking, and nonlinear discontinuity links therein lead to stability analysis difficulty. According to the present invention, the stability of a permanent magnet synchronous fan accessing a weak grid system is analyzed on the basis of a description function method, and nonlinear discontinuity links in a power ring are fully considered, so that the analysis result is more accurate. At the same time, the description function method is a method for quantitatively calculating the oscillation power and amplitude. The analysis method of the present invention can provide a good reference for oscillation suppression and controller design.
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Inventors:
YU MIAO (CN)
LIU JIANING (CN)
LU LINGXIA (CN)
WEI WEI (CN)
LIU JIANING (CN)
LU LINGXIA (CN)
WEI WEI (CN)
Application Number:
PCT/CN2021/089735
Publication Date:
November 03, 2022
Filing Date:
April 25, 2021
Export Citation:
Assignee:
UNIV ZHEJIANG (CN)
International Classes:
H02J3/38; H02J3/24; H02P9/00
Foreign References:
| CN105589985A | 2016-05-18 | |||
| CN109103903A | 2018-12-28 | |||
| CN103812127A | 2014-05-21 | |||
| KR20140039389A | 2014-04-02 |
Other References:
LIU JIANING, YU MIAO, XIA YANGHONG, WEI WEI: "Separated Frequency Stability Analysis of Grid-connected PV System Affected by Weak Grid", POWER SYSTEM TECHNOLOGY, SHUILI-DIANLIBU DIANLI KEXUE YANJIUYUAN, BEIJING, CN, vol. 44, no. 1, 1 January 2020 (2020-01-01), CN , pages 86 - 95, XP055982521, ISSN: 1000-3673
LIU JIANING; XIA YANGHONG; YU MIAO; WEI WEI: "Stability Analysis and Compensator Design for PV Generators Based on Describing Function Method", 2019 IEEE INNOVATIVE SMART GRID TECHNOLOGIES - ASIA (ISGT ASIA), IEEE, 21 May 2019 (2019-05-21), pages 1541 - 1545, XP033638202, DOI: 10.1109/ISGT-Asia.2019.8881185
XIA YANGHONG; YU MIAO; WANG XIAOMING; WEI WEI: "Describing Function Method Based Power Oscillation Analysis of LCL-Filtered Single-Stage PV Generators Connected to Weak Grid", IEEE TRANSACTIONS ON POWER ELECTRONICS, vol. 34, no. 9, 1 September 2019 (2019-09-01), Institute of Electrical and Electronics Engineers, USA, pages 8724 - 8738, XP011729664, ISSN: 0885-8993, DOI: 10.1109/TPEL.2018.2887295
LIU JIANING; XIA YANGHONG; YU MIAO; WEI WEI: "Stability Analysis and Compensator Design for PV Generators Based on Describing Function Method", 2019 IEEE INNOVATIVE SMART GRID TECHNOLOGIES - ASIA (ISGT ASIA), IEEE, 21 May 2019 (2019-05-21), pages 1541 - 1545, XP033638202, DOI: 10.1109/ISGT-Asia.2019.8881185
XIA YANGHONG; YU MIAO; WANG XIAOMING; WEI WEI: "Describing Function Method Based Power Oscillation Analysis of LCL-Filtered Single-Stage PV Generators Connected to Weak Grid", IEEE TRANSACTIONS ON POWER ELECTRONICS, vol. 34, no. 9, 1 September 2019 (2019-09-01), Institute of Electrical and Electronics Engineers, USA, pages 8724 - 8738, XP011729664, ISSN: 0885-8993, DOI: 10.1109/TPEL.2018.2887295
Attorney, Agent or Firm:
HANGZHOU QIUSHI PATENT OFFICE CO., LTD. (CN)
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