Photovoltaic array maximum power point tracking (MPPT) controller based on segmented model and controlling method

A photovoltaic array, segmented model technology, applied in photovoltaic power generation, control/regulation systems, instruments, etc., can solve problems such as the inability to achieve optimal control

Active Publication Date: 2013-01-30
昇辉智能科技股份有限公司
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  • Abstract
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Problems solved by technology

[0004] The object of the present invention is to provide a photovoltaic array MPPT controller and control method based on a segmentation model, to solve the problem that the existing photovoltaic array MPPT controller and control method cannot achieve optimal control

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  • Photovoltaic array maximum power point tracking (MPPT) controller based on segmented model and controlling method
  • Photovoltaic array maximum power point tracking (MPPT) controller based on segmented model and controlling method

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[0051]In order to facilitate the understanding of those skilled in the art, the section model-based photovoltaic array MPPT controller and control method of the present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings.

[0052] figure 1 It shows the structure of the PV array MPPT controller based on the segmentation model in an embodiment of the present invention.

[0053] Such as figure 1 As shown, in this embodiment, the photovoltaic array MPPT controller based on the segmentation model is connected to the photovoltaic power generation system, so that the photovoltaic power generation system works at the maximum power output state, and the photovoltaic power generation system includes a photovoltaic array 1, a voltage and current measurement circuit 4 And DC / DC conversion circuit 2, further, this photovoltaic array MPPT controller also comprises: DSP / MCU controller 5, it is connected with voltage and curr...

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Abstract

The invention provides a photovoltaic array maximum power point tracking (MPPT) controller based on a segmented model. The photovoltaic array MPPT controller is connected with a photovoltaic power generation system, so that the photovoltaic power generation system works in a maximum power output state; the photovoltaic power generation system comprises a photovoltaic array, a voltage and current measurement circuit and a direct current/direct current (DC/DC) conversion circuit; the photovoltaic array MPPT controller comprises a digital signal processor/micro control unit (DSP/MCU) controller and a control module based on the segmented model, wherein the DSP/MCU controller is connected with the voltage and current measurement circuit and the DC/DC conversion circuit; and the control module based on the segmented model runs on the DSP/MCU controller. In addition, the invention also provides a photovoltaic array MPPT controlling method based on the MPPT controller and the segmented model. Through the controller and the method, the working point of the photovoltaic array is accurately converged at a global maximum value, so that optimal control is realized.

Description

technical field [0001] The invention relates to an MPPT controller and a control method, in particular to a photovoltaic array MPPT controller and a control method. Background technique [0002] The photovoltaic array maximum power point tracking (MPPT, Maximum Power Point Tracking) controller is an important part of the photovoltaic power generation system. Its function is to control the photovoltaic array to work at the maximum power output state to ensure the power generation efficiency of the photovoltaic array. The MPPT controllers in actual operation generally adopt traditional hill-climbing control methods, such as disturbance observation method, incremental conductance method, etc., and some MPPT controllers use fixed voltage method, or a combination of fixed voltage method and hill-climbing control method. Optimal control method. Among them, the disadvantage of the fixed voltage method is that the operating point cannot be controlled very accurately at the maximum ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/67H02N6/00
CPCY02E10/58Y02E10/56
Inventor 崔静于龙
Owner 昇辉智能科技股份有限公司
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