Title:
CONTROL METHOD AND APPARATUS FOR PHOTOVOLTAIC TRACKING SHAFT, AND PHOTOVOLTAIC TRACKING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2024/051389
Kind Code:
A1
Abstract:
A control method and apparatus for a photovoltaic tracking shaft, and a photovoltaic tracking system. The control method comprises: on the basis of the maximum output power of an inverter, determining a pre-calculated tracking angle corresponding to a photovoltaic tracking shaft (S101); controlling a tracking shaft angle of the photovoltaic tracking shaft to be adjusted to the direction of the pre-calculated tracking angle (S102); determining an output current change tendency of the inverter during the process of adjusting the tracking shaft angle (S103); and performing accuracy detection on the pre-calculated tracking angle according to the current change tendency, and updating the pre-calculated tracking angle when it is determined that the pre-calculated tracking angle does not meet an accuracy requirement (S104). A theoretical maximum output power angle of a photovoltaic tracking shaft, i.e., a pre-calculated tracking angle, is obtained on the basis of the maximum output power of an inverter, and accuracy detection and updating are performed on the pre-calculated tracking angle by means of collecting an output current change tendency of the inverter during the process of adjusting a tracking shaft angle, so as to realize closed-loop control of a controller over the photovoltaic tracking shaft, thereby fully exerting the advantages of the photovoltaic tracking shaft and maximum power point tracking of the inverter, and improving the power generation capacity to the maximum extent.
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Inventors:
MA SHENGBING (CN)
XIA DENGFU (CN)
XIA DENGFU (CN)
Application Number:
PCT/CN2023/110125
Publication Date:
March 14, 2024
Filing Date:
July 31, 2023
Export Citation:
Assignee:
ENERTRACK TECH CO LTD (CN)
International Classes:
G05D3/12
Foreign References:
| CN115309195A | 2022-11-08 | |||
| CN113703489A | 2021-11-26 | |||
| CN102422239A | 2012-04-18 | |||
| CN105955319A | 2016-09-21 | |||
| CN113922414A | 2022-01-11 | |||
| CN105717974A | 2016-06-29 | |||
| CN112379720A | 2021-02-19 | |||
| KR101555274B1 | 2015-10-07 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW CO., LTD. (CN)
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