Title:
PHOTOVOLTAIC PARALLEL OPTIMIZER
Document Type and Number:
WIPO Patent Application WO/2024/045509
Kind Code:
A1
Abstract:
Provided in the present invention is a photovoltaic parallel optimizer, which consists of a plurality of switch devices and a plurality of controllers. The lead-in end of each switch device is connected to a corresponding photovoltaic panel, the lead-out end thereof is connected to a same parallel application device, and the signal control end thereof is connected to the signal output end of a corresponding controller and used for turning on or turning off the connected photovoltaic panel to supply power to the parallel application device when receiving high-level and low-level signals issued by the connected controller. The two voltage acquisition ends of each controller are respectively connected to the lead-in line and the lead-out line of the connected switch device by means of voltage sensors, so as to test the conditions of voltages on the lead-in and lead-out ends of the connected switch device in real time and compare same. If the voltage of the lead-in end is greater than the voltage of the lead-out end, a high-level signal is generated and issued; and on the contrary, a low-level signal is generated and issued. Implementing the present invention can prevent photovoltaic panels and related devices thereof from being damaged during parallel application, thereby improving the system safety, reducing system losses and increasing the system MPPT efficiency; and in addition, the present invention can control the access of any photovoltaic panel during parallel application.
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Inventors:
LIAO MAOYU (CN)
DONG HAILIANG (CN)
HE YIXIAO (CN)
DONG HAILIANG (CN)
HE YIXIAO (CN)
Application Number:
PCT/CN2023/076655
Publication Date:
March 07, 2024
Filing Date:
February 17, 2023
Export Citation:
Assignee:
ZHEJIANG BENYI ELECTRICAL CO LTD (CN)
International Classes:
H02J3/38
Foreign References:
| CN115241925A | 2022-10-25 | |||
| CN103490447A | 2014-01-01 | |||
| CN110429580A | 2019-11-08 | |||
| CN113964863A | 2022-01-21 |
Attorney, Agent or Firm:
WENZHOU MINGCHUANG INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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