Module and system for controlling photovoltaic strings to perform domino-type automatic snow melting

Patent metadata

Field	Value
Publication number	US-12401318-B2
Application number	US-201917915582-A
Country	US
Kind code	B2
Filing date	Nov 8, 2019
Priority date	Jun 11, 2019
Publication date	Aug 26, 2025
Grant date	Aug 26, 2025

Abstract

Provided is a system for controlling photovoltaic strings to perform Domino-type automatic snow melting, including a controller, M photovoltaic strings and a photovoltaic power supply control module; the 1 st to (k−1) th photovoltaic strings supply power to the k th photovoltaic string, in response to the k th photovoltaic string being in a load mode, 2≤k≤M. The M photovoltaic strings are correspondingly connected to M photovoltaic interfaces of the photovoltaic power supply control module; the controller is connected to the photovoltaic power supply control module, and is configured to control the working state of the photovoltaic power supply control module.

First claim

What is claimed is:

1. A system for controlling photovoltaic strings to perform Domino-type automatic snow melting, comprising a controller, M photovoltaic strings and a photovoltaic power supply control module; wherein the photovoltaic power supply control module comprises M photovoltaic interfaces; the M photovoltaic strings are correspondingly connected to the M photovoltaic interfaces; wherein,
the photovoltaic power supply control module comprises at least Work State I and Work State II:
in Work State I, 1 st to M th photovoltaic strings are all in a power supply mode, and supply power to an external load;
in Work State II, 1 st to (k−1) th photovoltaic strings are all in a power supply mode in response to a k th photovoltaic string being in a load mode, and the 1 st to (k−1) th photovoltaic strings supply power to the k th photovoltaic string, 2≤k≤M; and
the controller is connected to the photovoltaic power supply control module, and is configured to control the working state of a photovoltaic power supply control module,
wherein in Work State II of the photovoltaic power supply control module, 2 nd to M th photovoltaic strings execute the load mode sequentially,
wherein a photovoltaic panel included in the 2 nd photovoltaic string to the M th photovoltaic string are all installed on the same inclined plane A,
wherein a photovoltaic panel included in the 1 st photovoltaic string is installed perpendicular to a ground.

2. The system according to claim 1 , wherein in Work State I of the photovoltaic power supply control module, the 1 st to M th photovoltaic strings are connected in series; in Work State II of the photovoltaic power supply control module, the 1 st to (k−1) th photovoltaic strings are connected in series, in response to the photovoltaic string connected to the k th photovoltaic interface being in the load mode.

3. The system according to claim 1 , wherein the number of photovoltaic panels included in the 2 nd photovoltaic string to the M th photovoltaic string increases sequentially.

4. The system according to claim 1 , wherein all photovoltaic panels on the inclined plane A are arranged in a matrix; and in a row of the photovoltaic panels in an inclined direction of the inclined plane A, a serial number of a photovoltaic string in which a photovoltaic panel is located lower is less than a serial number of a photovoltaic string in which a photovoltaic panel is located higher.

5. The system according to claim 1 , further comprising a power supply; wherein the power supply is connected to the photovoltaic power supply control module; in Work State II of the photovoltaic power supply control module, the power supply supplies power to the 1 st photovoltaic string, in response to the 1 st photovoltaic string being in the load mode.

6. The system according to claim 5 , wherein in Work State II of the photovoltaic power supply control module, the 1 st to M th photovoltaic strings execute the load mode sequentially.

7. The system according to claim 6 , wherein the power supply and the 1 st to (k−1) th photovoltaic strings all supply power to the k th photovoltaic string, in response to the k th photovoltaic string being in the load mode, 2≤k≤M.

8. The system according to claim 6 , wherein the number of photovoltaic panels included in the 1 st photovoltaic string to the M th photovoltaic string increases sequentially.

Assignees

• Institute Of Advanced Technology Univ Of Science And Technology Of China
• Univ Science & Technology China

Inventors

• Zheng Jianan
• Liu Wen
• Ingenhoff Jan Justus
• Liu Wenjun
• Zhang Xinyu

Classifications

• F24S40/20

  Cleaning; Removing snow · CPC title

• F24S40/85

  Arrangements for protecting solar collectors against adverse weather conditions (F24S40/10 takes precedence) · CPC title

• H02S40/44

  Means to utilise heat energy, e.g. hybrid systems producing warm water and electricity at the same time (directly associated with the PV cell or integrated with the PV cell H10F77/67) · CPC title

• Y02E10/56

  Power conversion systems, e.g. maximum power point trackers · CPC title

• Y02B10/10

  Photovoltaic [PV] · CPC title