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MPPT calculation strategy and control method and photovoltaic array power generation system

A photovoltaic array and computing strategy technology, applied in photovoltaic power generation, control/regulation systems, and regulation of electrical variables, can solve problems such as difficulty in achieving ideal results, and achieve self-adaptive, high steady-state precision, and improved efficiency Effect

Active Publication Date: 2014-01-22
ZHEJIANG ENVERTECH CORP LTD
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Problems solved by technology

[0003] For the perturbation and observation method, whether it is the traditional method or the improved method, if the perturbation step size is fixed, it is difficult to achieve the desired effect

Method used

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  • MPPT calculation strategy and control method and photovoltaic array power generation system
  • MPPT calculation strategy and control method and photovoltaic array power generation system
  • MPPT calculation strategy and control method and photovoltaic array power generation system

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Embodiment Construction

[0038] Below, the technical solution of the present invention will be described in detail in conjunction with the accompanying drawings.

[0039] please read first figure 1 , figure 1 It is the overall structure diagram of the photovoltaic array power generation system under the gist of the present invention. As shown in the figure, the photovoltaic array power generation system includes: a photovoltaic array 10, which converts solar energy into electrical energy; a DC-DC converter 20 connected to the output of the photovoltaic array 10, in the present invention, a step-up Boost converter is used as This level of DC-DC converter, the boost converter has the advantages of high efficiency, strong control ability, simple structure, etc. This system adopts the boost converter to realize the maximum power tracking of the photovoltaic power generation system; it is also connected to The output terminal of the photovoltaic array 10 is used to drive the MPPT module 30 of the converter...

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Abstract

The invention discloses an MPPT calculation strategy and a control method and a photovoltaic array power generation system. The MPPT control method achieves the maximum power output of a photovoltaic array through a variable step size perturbation and observation method, both the static performance and dynamic performance of the system are achieved, and the system has adaptability.

Description

technical field [0001] The invention relates to a maximum power tracking control method of a solar photovoltaic power generation system. The application of high-precision maximum power tracking method in photovoltaic power generation system. Background technique [0002] With energy depletion and environmental pollution becoming more and more serious, renewable energy has become an important part of human energy sustainable development strategy. Among the available renewable energy sources, solar energy is considered to be the most potential green energy source. The output power and output voltage of the photovoltaic array have a nonlinear relationship and are affected by meteorological conditions (such as radiation and temperature, etc.). In order to improve the efficiency of photovoltaic power generation system, maximum power point tracking (Maximum Power Point Tracking, MPPT) is an indispensable part of photovoltaic power generation system. At present, the most commonl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/67
CPCY02E10/58Y02E10/56
Inventor 杨勇
Owner ZHEJIANG ENVERTECH CORP LTD
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