Title:
POWER CONVERTER CONTROL METHOD, CONTROL APPARATUS, AND COMPUTER STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2023/030027
Kind Code:
A1
Abstract:
The present application provides a power converter control method, a control apparatus, and a computer storage medium, which can protect a power converter in the case of a large jump in the voltage phase of a power grid, reduce the power backflow degree, and reduce impact on the power grid and the power converter. The method comprises: determining a phase angle difference between an output voltage phase angle of a power converter and a voltage phase angle of a power grid; if the phase angle difference is greater than or equal to a first angle threshold, setting a d-axis reference current value and a q-axis reference current value, which are used for determining the modulation voltage of the power converter, as preset fixed values; calculating a first modulation voltage of the power converter on the basis of the d-axis reference current value, the q-axis reference current value, and the current of the power grid; calculating the compensation voltage of the power converter by using a preset virtual resistance parameter and the current of the power grid; and taking a sum of the first modulation voltage and the compensation voltage as a total modulation voltage.
Inventors:
ZHAO MINGQUAN (CN)
XIN KAI (CN)
DONG PENG (CN)
XIN KAI (CN)
DONG PENG (CN)
Application Number:
PCT/CN2022/113376
Publication Date:
March 09, 2023
Filing Date:
August 18, 2022
Export Citation:
Assignee:
HUAWEI DIGITAL POWER TECH CO LTD (CN)
International Classes:
H02J3/38
Foreign References:
| CN113890083A | 2022-01-04 | |||
| CN112165098A | 2021-01-01 | |||
| CN111835035A | 2020-10-27 | |||
| US20110317460A1 | 2011-12-29 | |||
| US20210249862A1 | 2021-08-12 | |||
| CN110401206A | 2019-11-01 | |||
| CN109728604A | 2019-05-07 | |||
| CN109256808A | 2019-01-22 |
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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