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Circuit arrangements for reducing potential-induced degradation in photovoltaic modules

A technology for circuit layout and photovoltaic modules, which is applied to the monitoring of photovoltaic modules, photovoltaic power generation, and photovoltaic systems, and can solve the problems of not monitoring different states

Active Publication Date: 2017-12-12
BENDER SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The different states of condensation are also not monitored

Method used

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  • Circuit arrangements for reducing potential-induced degradation in photovoltaic modules
  • Circuit arrangements for reducing potential-induced degradation in photovoltaic modules
  • Circuit arrangements for reducing potential-induced degradation in photovoltaic modules

Examples

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Embodiment Construction

[0048] figure 1 A photovoltaic system 2 is shown comprising a circuit arrangement 4 according to the invention and according to the first solution. The photovoltaic system 2 comprises a photovoltaic generator 6 made of photovoltaic modules 8 , an inverter 10 and a circuit arrangement 4 for reducing potential-induced degradation in the photovoltaic modules 8 .

[0049] The circuit arrangement 4 consists of an insulation monitoring device (IMD) 12 and a pulse coupling circuit 14 . The ground connection of the insulation monitoring device 12 and the ground connection of the pulse coupling circuit 14 are placed at ground potential, and the corresponding system connections of the insulation monitoring device 12 and the pulse coupling circuit 14 are symmetrically connected to the positive pole L+ and the negative pole L of the photovoltaic generator 6 -.

[0050] exist figure 2 In , a photovoltaic system 22 comprising a circuit arrangement 24 according to the invention and accor...

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Abstract

The invention relates to circuit arrangements for reducing potential-induced degradation in photovoltaic modules of a photovoltaic generator, said circuit arrangements comprising an insulation monitoring device for a temporally continuous insulation monitoring of the photovoltaic generator. Furthermore, the invention relates to a photovoltaic system comprising a circuit arrangement for reducing potential-induced degradation in photovoltaic modules, said photovoltaic system comprising a photovoltaic generator and an insulation monitoring device for a temporally continuous insulation monitoring of the photovoltaic generator. Different solutions are proposed which enable reducing potential-induced degradation while simultaneously continuously monitoring insulations. The circuit arrangements according to the invention rest upon an insulation monitoring device interacting with measures based circuit technology for influencing potentials in a photovoltaic module.

Description

technical field [0001] The invention relates to a circuit arrangement for reducing potential-induced degradation in a photovoltaic module of a photovoltaic generator, comprising an insulation monitoring device for temporally continuous insulation monitoring of a photovoltaic generator. [0002] Furthermore, the invention relates to a photovoltaic system comprising a circuit arrangement for reducing potential-induced degradation in a photovoltaic module comprising a photovoltaic generator and comprising an insulation monitoring device for temporally continuous insulation monitoring of the photovoltaic generator. Background technique [0003] To achieve sufficient inverter efficiency in photovoltaic systems, a sufficiently high inverter DC voltage is required. Thus, a plurality of photovoltaic modules of a photovoltaic generator are connected in series in a string, wherein system voltages (potentials of the individual solar cells of the photovoltaic generator to ground) typica...

Claims

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Application Information

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IPC IPC(8): H02S40/30H02S50/00
CPCH02S40/30H02S50/00H02S50/10Y02E10/56H02J3/38
Inventor 迪科尔·哈克尔奥利弗·沙佛曼弗雷德·格斯卡尔·施普
Owner BENDER SA