Solar photovoltaic parallel inverter control system based on LCL filtering

A solar photovoltaic and control system technology, applied in photovoltaic power generation, harmonic reduction devices, single-grid parallel feeding arrangements, etc., can solve the problems of poor stability, low reliability and poor performance of photovoltaic power generation systems, and achieve DC The effect of voltage reduction, high technology content and large added value
CN101494385AInactive Publication Date: 2009-07-29CHANGZHOU RUSN NEW ENERGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHANGZHOU RUSN NEW ENERGY
Publication Date
2009-07-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

A solar energy grid-connected inverter control system based on LCL filtration comprises a photovoltaic array, an electromagnetic interference filter, namely an EMI filter, a power module, an LCL filter, an isolation transformator TB1, a sample circuit, a filter circuit and a controller which includes a maximum capacity tracking MPPT unit. MPPT adopts an intelligent algorithm based on a hybrid algorithm of a simulated annealing method and a genetic algorithm. The hybrid optimization algorithm takes the operation process of the genetic algorithm as the main process and also combines a simulated annealing mechanism that is used for further adjusting optimized instruction data. The control system has the advantages of good stability, strong performance and high efficiency and reliability.
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Description

technical field

[0001] The invention relates to the field of clean energy grid-connected power generation, in particular to an inverter for solar grid-connected power generation, specifically a solar photovoltaic grid-connected inverter control system based on LCL filtering. Background technique

[0002] With the massive emission of greenhouse gases, the increasing greenhouse effect, the deteriorating environment of the earth we are too lazy to survive, coupled with the energy crisis, it is imminent to use clean energy to replace traditional energy. In recent years, with the advancement of photovoltaic cell technology, the efficiency of solar photovoltaic power generation has been continuously improved and the cost has been continuously reduced. Therefore, the use of solar photovoltaic power generation to replace traditional energy power generation has become the first choice for many countries. my country is rich in solar energy resources, and two-thirds of the country's lan...

Claims

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