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Photovoltaic inverter

A photovoltaic inverter and inverter technology, applied in photovoltaic power generation, conversion of irreversible DC power input to AC power output, AC network circuits, etc., can solve problems such as damage to photovoltaic inverters, and achieve the goal of preventing damage Effect

Inactive Publication Date: 2018-03-20
LSIS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In this article, regarding the PV inverter, if the operator does not properly connect the positive (+) polarity and negative (-) polarity between the PV Polarity, that is, if the photovoltaic inverter and photovoltaic modules are connected with different polarities from each other, when the photovoltaic inverter is operated, a large current flows instantaneously, which will cause instantaneous discharge and damage the photovoltaic inverter

Method used

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Examples

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Embodiment Construction

[0022] A description will now be given in detail of the exemplary embodiments with reference to the accompanying drawings. For the sake of brief description with reference to the drawings, the same or equivalent components will be given the same reference numerals, and descriptions thereof will not be repeated.

[0023] figure 1 It is a block diagram illustrating the configuration of the photovoltaic inverter 10 according to an embodiment of the present disclosure.

[0024] Such as figure 1 As explained in , the photovoltaic inverter 10 includes an input unit 100 , a switching device 200 , a booster unit 300 , a capacitor 400 , and an inverter unit 500 . figure 1 The components of the photovoltaic inverter 10 described in are not required and the photovoltaic inverter 10 can be compared to figure 1 more or fewer components than those described in the

[0025] Such as figure 2 As explained in , the input unit 100 includes a first input unit 110 and a second input unit 120...

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Abstract

A photovoltaic inverter comprising: an input unit connected to a first terminal and a second terminal to which a positive (+) polarity or a negative (‑) polarity of a photovoltaic module is connected; a switching device configured according to a preset polarity of an inverter unit to control a first terminal and a second terminal connected to an input unit; a booster unit configured to boost a voltage of a photovoltaic module delivered from the input unit through a switching device; a capacitor , which is configured to store the voltage boosted by the booster unit; and an inverter unit, which is configured to convert the voltage stored in the capacitor into alternating current (AC) and supply the converted AC voltage to a power system.

Description

technical field [0001] The present disclosure relates to a photovoltaic inverter including a switching device to be connected to a photovoltaic module, and more particularly, to a photovoltaic inverter suitably connected to a photovoltaic module through a switching device regardless of connection polarity. Background technique [0002] Generally, a photovoltaic inverter (or grid-connected inverter) is a power conversion device that connects an input power system and a commercial power system and transmits power from the input power system to the commercial power system. [0003] The input terminal of the photovoltaic inverter is connected to the input terminal and the input terminal of the photovoltaic module (or solar cell module), and, here, because the photovoltaic module has two polarities, positive (+) and negative (-) polarity, The input terminals of the photovoltaic inverter also have two polarities, positive (+) and negative (-). [0004] Alternating current (AC) is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/48
CPCH02J3/383H02H11/002H02H7/1222H02J2300/24H02J3/381Y02E10/56H02J3/46H02M7/44H02J2300/22
Inventor 尹东珍
Owner LSIS CO LTD
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