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Recovery of Deteriorated Photovoltaic Panels

A photovoltaic panel and recovery operation technology, applied in the direction of photovoltaic modules, photovoltaic power generation, output power conversion devices, etc., can solve problems such as unavailability of auxiliary services

Inactive Publication Date: 2021-07-09
MARICI HLDG THE NETHERLANDS BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, during the operation of the calibrator, ancillary services may not be available

Method used

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  • Recovery of Deteriorated Photovoltaic Panels
  • Recovery of Deteriorated Photovoltaic Panels
  • Recovery of Deteriorated Photovoltaic Panels

Examples

Experimental program
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Effect test

Embodiment Construction

[0048] figure 1 A photovoltaic plate system 10 including a photovoltaic plate 12 is shown, which is interconnected from the grid 16 via the inverter system 14.

[0049] The photovoltaic plate 12 has a positive electrode 18a and an negative electrode 18b. When the light (usually sunlight) is irradiated onto the photovoltaic plate 12, a positive voltage V is generated between the light plate 12 between the positive electrode 18a and the negative electrode 18b. PV . When there is no or almost no light irradiation on the photovoltaic plate, the voltage V between poles 18a, 18b PV Basically zero.

[0050] The photovoltaic plate is coupled to the positive DC link output terminal 20a of the inverter system 14 using its positive electrode 18a, and the negative electrode 18b is connected to the negative DC link output terminal 20b of the inverter system 14. The output terminals 20a, 20b are supplied from DC link 22, which interconnects the main inverter 24 of the inverter system. The inve...

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Abstract

An inverter system (14) for a photovoltaic panel (12), comprising: an inverter (24) adapted to convert a DC voltage from said photovoltaic panel (12) to be provided AC voltage to the grid (16); DC link (22), which interconnects with the inverter (24) and provides a positive DC link output (20a) which can be connected to the positive pole (18a) of the photovoltaic panel (12) ) and the negative DC link output (20b) connectable to the negative pole (18b) of the photovoltaic panel (12); the switch (30) for connecting the negative pole (18b) of the photovoltaic panel (12) to the DC link ( 22) disconnecting; and a controller (28) for controlling the inverter (24) and the switch (30); wherein the controller (28) is adapted to open the switch (30) so that the photovoltaic panel (12) Can only be powered by the positive DC link output (20a).

Description

Technical field [0001] The present invention relates to the field of photovoltaic plates. In particular, the present invention relates to an inverter system, a photovoltaic plate system, and a method for operating a photovoltaic board system. Background technique [0002] Potential induction Degradation (PID) is a significant decline in power generation capabilities of photovoltaic boards. The negative potential of the photovoltaic plate is high is the main reason for PID, which may gradually reduce the rated output power of the photovoltaic plate after several years of service. [0003] In the case of a current isolation inverter system, it is used to convert the DC voltage from the photovoltaic plate into an AC voltage to be supplied to the grid, and can easily solve the PID problem by grounding the negative electrode of the photovoltaic plate. On the other hand, a typical non-transformer inverter that is typically applied to the negative potential of the photovoltaic plate is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/44H02J3/38
CPCH02J2300/24H02J3/381Y02E10/56H02S40/32H02M3/33523
Inventor 朴起范T.B.塞罗M.施维策尔S.马斯特罗恩
Owner MARICI HLDG THE NETHERLANDS BV