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A time-delay feedback-based photovoltaic system converter chaos suppression system and method

A chaos suppression, photovoltaic system technology, applied in photovoltaic power generation, conversion equipment without intermediate conversion to AC, current collectors, etc., can solve the problems of parameter changes and environmental noise sensitivity, difficult to achieve and so on

Active Publication Date: 2015-08-05
TIANDAQIUSHI ELECTRIC POWER HIGH TECH CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

This method makes use of the characteristics that chaos is sensitive to perturbation, and performs a small perturbation on a certain parameter of the system to stabilize the system on the chaotic orbit. It is not easy to achieve in practical applications, and it is very sensitive to parameter changes and environmental noise.

Method used

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  • A time-delay feedback-based photovoltaic system converter chaos suppression system and method
  • A time-delay feedback-based photovoltaic system converter chaos suppression system and method
  • A time-delay feedback-based photovoltaic system converter chaos suppression system and method

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Embodiment

[0053] Example: A photovoltaic system converter chaos suppression system based on time delay feedback (see figure 1 ), which is characterized in that it includes a solar panel module, a DC / DC converter module, a battery module, a DC load module, a PWM signal trigger module and a chaos suppressor module; wherein, the input end of the DC / DC converter module The output signal of the photovoltaic panel module and the output signal of the PWM signal trigger are collected, and the output end is connected to the input end of the battery module and the chaos suppressor module; the output end of the battery module is connected to the DC load module; The input end is connected with the output end of the DC / DC, and the output end is connected with the input end of the PWM signal triggering module.

[0054] The DC / DC converter adopts a boost circuit structure.

[0055] The chaos suppressor module is composed of a data sampling unit, an A / D conversion unit, a main controller unit, a chao...

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Abstract

The invention provides a photovoltaic system converter chaos restraining system and method based on time delay feedback. The system is characterized by comprising a solar cell panel module, a DC / DC converter module, a storage battery module, a direct-current load module, a PWM signal triggering module and a chaos restraining device module. The work method includes the steps of data collection, chaos judgment, control signal output and chaos control. The system and method have the advantages that simplicity and practicability are achieved, and operability is strong; a chaos judgment device is high in precision, the anti-noise capacity is strong, calculation time is short, and the needed storage space is small; implementation is easy; control cost is low and the project is easy to achieve.

Description

(1) Technical field: [0001] The invention belongs to the cross field of power electronics technology and power system photovoltaic power generation technology, in particular to a photovoltaic system converter chaos suppression system based on time delay feedback and a method thereof. (2) Background technology: [0002] In recent years, with the rapid consumption of traditional energy and the aggravation of environmental pollution, the new energy industry has received great attention and support, among which the photovoltaic power generation industry has developed rapidly. At present, technicians have found that the photovoltaic power generation system is a typical nonlinear power system. When subjected to certain disturbances, the system may lose its stability, such as chaos. Therefore, the research and control of chaos in photovoltaic systems is very important. For stand-alone photovoltaic systems, the chaotic phenomenon is usually concentrated in the DC / DC converter. Var...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H02M3/10
CPCY02E10/56
Inventor 马幼捷马玲周雪松徐晓宁李季尹金良宋爽闵攀王彩明
Owner TIANDAQIUSHI ELECTRIC POWER HIGH TECH CO LTD
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