A solar cell array variable step size mppt control circuit and control method

A solar cell array and control circuit technology, applied in the direction of adjusting electrical variables, control/regulation systems, instruments, etc., can solve the problems of inaccurate tracking, single-step algorithm, and inability to maximize the output power of solar cell arrays , to achieve the effects of increasing output power, precise maximum power tracking, and improving stability

Active Publication Date: 2021-08-10
SHANGHAI INST OF SPACE POWER SOURCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the staggered perturbation method adopted by the MPPT algorithm can perturb the voltage and current alternately, and can realize maximum power tracking simply, quickly and efficiently. Tracking, unable to maximize the output power of the solar array

Method used

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  • A solar cell array variable step size mppt control circuit and control method

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Embodiment Construction

[0030] Such as figure 1 As shown, the present invention proposes a solar cell array variable step size MPPT control circuit, including: MPPT control circuit, hysteresis comparison circuit, step size switching circuit and current sampling circuit;

[0031] The current sampling circuit is used to collect the output current of the solar cell array, and the MPPT control circuit is used to realize the tracking of the maximum power point; the hysteresis comparison circuit is used to increase the anti-interference ability of the step switching circuit; the step switching circuit is used for MPPT tracking step switch. The circuit realizes that when the current of the solar cell array is small, the maximum power point is tracked with a larger step size, and when the current of the solar cell array is large, the maximum power point is tracked with a smaller step size, which improves the maximum power point of the solar cell array Tracking accuracy.

[0032] The current sampling circui...

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PUM

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Abstract

A solar battery array variable step-size MPPT control circuit and a control method, the method comprising a current sampling circuit, an MPPT control circuit, a hysteresis loop comparison circuit, and a step-size switching circuit. The current sampling circuit is used to collect the output current of the solar cell array, and the MPPT control circuit is used to realize the tracking of the maximum power point; the hysteresis comparison circuit is used to increase the anti-interference ability of the step switching circuit; the step switching circuit is used for MPPT tracking step switch. The circuit realizes that when the current of the solar cell array is small, the maximum power point is tracked with a larger step size, and when the current of the solar cell array is large, the maximum power point is tracked with a smaller step size, which improves the maximum power point of the solar cell array Tracking accuracy.

Description

technical field [0001] The invention relates to a solar battery array variable step size MPPT control circuit and a control method, belonging to the technical field of aerospace power supply control. Background technique [0002] The solar energy in the spacecraft is currently the only energy source, and the maximum power tracking (MPPT) transmission method can maximize the use of the output power of the solar array. [0003] At present, the staggered perturbation method adopted by the MPPT algorithm can perturb the voltage and current alternately, and can realize maximum power tracking simply, quickly and efficiently. Tracking, the output power of the solar cell array cannot be utilized to the greatest extent. [0004] Therefore, how to improve the precision of MPPT circuit is an urgent problem to be solved. Contents of the invention [0005] The technical solution of the present invention is to provide a solar cell array variable step size MPPT control circuit and cont...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/67
CPCG05F1/67
Inventor 郑勋绩陈达兴许峰邢航航赵建成张婷婷
Owner SHANGHAI INST OF SPACE POWER SOURCES
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