an inverter

A technology of inverters and controllers, which is applied in the direction of instruments, regulating electric variables, control/regulation systems, etc., and can solve problems such as loss of electric energy and power generation, loss of efficiency of photovoltaic cells, and failure of battery panels to operate

Active Publication Date: 2020-08-07
FONRICH NEW ENERGY TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When some cells in the same string fail to generate electricity due to poor product consistency or shadow occlusion, the efficiency of the entire string of photovoltaic cells will suffer a serious loss, and the inverter, especia

Method used

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Embodiment Construction

[0058] see figure 1 , take the battery strings CELL-ST1~CELL-ST3 arranged on the photovoltaic module as an example to illustrate the inventive spirit of the present invention, note that the specific number of battery strings on the photovoltaic board is only for our description, and does not mean that the present invention is only limited in the specific quantities listed. The battery string CELL-ST1 has a plurality of photovoltaic cells 10 connected in series. Generally, the anode of the latter photovoltaic cell 10 is connected to the cathode of the previous photovoltaic cell 10 adjacent to it. The first photovoltaic cell in the battery string is set to The anode of the battery 10 is used as the equivalent anode A1 of the entire battery string CELL-ST1, and the cathode of the last photovoltaic cell 10 in the battery string is set as the equivalent cathode C1 of the entire battery string CELL-ST1. According to the same principle, the battery string CELL-ST2 has an equivalent ...

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Abstract

The invention mainly relates to an inverter, comprising an energy storage capacitor and a first circuit break module and a second circuit break module; the first circuit break module is connected between a first input node of the inverter and a first end of the energy storage capacitor; the second circuit break module is connected between a second input node of the inverter and a second end of the capacitor; and the switching on and off of the first circuit break module and the second circuit break module are controlled by a second controller of the inverter; the inverter also comprises a command unit used for transmitting communication carrier waves on a transmission line connected to the first input node of the inverter and/or on the transmission line connected to the second input node of the inverter in order to realize that the inverter transmits command information to the outside.

Description

technical field [0001] The present invention mainly relates to a power device for photovoltaic power generation. To be precise, it adopts a scheme in which a multi-stage photovoltaic cell string and a multi-stage voltage conversion circuit as a power optimizer are used in each photovoltaic module, so that any one-stage voltage Each conversion circuit can independently perform an independent maximum power point tracking calculation on a corresponding battery string to ensure the stability of the output power of the entire solar power generation system. Background technique [0002] With the shortage of energy and the development of science and technology, new energy has been more and more widely used. Due to the characteristics of safe and reliable photovoltaic power generation, low operating costs, simple maintenance, and usable everywhere, photovoltaic power generation has been rapidly developed worldwide. development, especially in solving the problem of electricity consum...

Claims

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Application Information

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IPC IPC(8): H02S40/32H02S40/30G05F1/67
CPCG05F1/67H02S40/30H02S40/32Y02E10/50
Inventor 张永应剑东
Owner FONRICH NEW ENERGY TECH LTD
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