Title:
ACTIVE MODULAR CONVERTER CHAIN CONTROL METHOD AND CONVERTER CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2022/052916
Kind Code:
A1
Abstract:
Provided in the present application is an active modular converter chain control method, comprising: on the basis of the number of energy storage sub-modules and the number of non-energy storage sub-modules, calculating the maximum value of the active power outputted by a converter chain; on the basis of the maximum value of the active power, performing correction on a received active power command to acquire an active power correction command; on the basis of the active power correction command, performing correction on a received reactive power command to acquire a reactive power correction command; a control system distributes the active power correction command to the energy storage converter chain, and distributes the reactive power correction command to the non-energy storage converter chain and the energy storage converter chain; the energy storage converter chain executes closed-loop control on the basis of the distributed active power correction command and reactive power correction command; and the non-energy storage converter chain executes closed-loop control on the basis of the distributed reactive power correction command. Power commands are corrected on the basis of the output power capability of the converter chain in order to prevent the control target from exceeding the operating range, increasing reliability.
Inventors:
XIE YEYUAN (CN)
WANG YU (CN)
SHENG XIAODONG (CN)
WANG YU (CN)
SHENG XIAODONG (CN)
Application Number:
PCT/CN2021/116978
Publication Date:
March 17, 2022
Filing Date:
September 07, 2021
Export Citation:
Assignee:
NR ELECTRIC CO LTD (CN)
NR ENGINEERING CO LTD (CN)
NR ENGINEERING CO LTD (CN)
International Classes:
H02M7/483; H02H7/12; H02M3/335
Domestic Patent References:
| WO2016138949A1 | 2016-09-09 |
Foreign References:
| CN112072940A | 2020-12-11 | |||
| CN110912434A | 2020-03-24 | |||
| CN110022071A | 2019-07-16 |
Attorney, Agent or Firm:
BEIJING LAWSING IP FIRM (CN)
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