Maximum power point tracking method for photovoltaic power generation system based on fireworks algorithm

A photovoltaic power generation system and maximum power point technology, which is applied in photovoltaic power generation, control/regulation systems, and regulation of electrical variables, etc., can solve problems such as easy to fall into a local optimal state, poor tracking effect, and high correlation

Inactive Publication Date: 2016-06-08
CHINA UNIV OF MINING & TECH
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Problems solved by technology

[0006] In order to solve the shortcomings of the existing maximum power point tracking method based on the high correlation between the parameters and the external environment, poor tracking effect and easy to fall into a local optimal state, the present invention proposes a maximum power point of photovoltaic power generation system based on fireworks algorithm tracking method

Method used

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  • Maximum power point tracking method for photovoltaic power generation system based on fireworks algorithm
  • Maximum power point tracking method for photovoltaic power generation system based on fireworks algorithm
  • Maximum power point tracking method for photovoltaic power generation system based on fireworks algorithm

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Embodiment Construction

[0025] 1. initialization.

[0026] 1.1 Set the algorithm parameters T, N(t), r(t), where T is the iterative algebra of the algorithm, N(t) is the number of fireworks bombs, satisfying the formula (1), r(t) is the explosion radius of the fireworks bombs, satisfying Formula (2).

[0027] 1.2 Randomly initialize the positions of N (1) fireworks shells (voltages) within the scope of the 1-dimensional voltage search space, let t=1.

[0028] 2. Conduct explosive operations and maximum power tracking.

[0029] 2.1 Update location information.

[0030] For each firework shell (voltage) along the positive and negative directions of the standard coordinate axis, the sparks are generated by exploding according to the formula (3) at the radius r(t), 2r(t) / 3 and r(t) / 3 respectively

[0031] (3)

[0032] where X i is the current position of the fireworks bomb i (that is, the explosion center), and is the position of the spark generated by the explosion of the fireworks bomb i. r j...

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Abstract

The invention relates to a maximum power point tracking method for a photovoltaic power generation system based on a fireworks algorithm. The maximum power point tracking method is characterized by comprising the following steps: (1) finding and tracking a maximum power point: generating a certain number of firework bullets in an output voltage search region based on a unique search mechanism of a fireworks blasting algorithm, and then performing blasting operations in positive and negative directions on each firework bullet, wherein fireworks generated by blasting execute local search within a certain neighborhood range of the original firework bullet (the blasting point), and each blasting includes a voltage size updating phase and a power information updating phase; (2) positioning the maximum power point: repeating the firework blasting process, ending the algorithm if the iterative frequency of actual running of the algorithm is greater than a set parameter T, and determining the last position of the fireworks is the maximum power point. The method cannot be affected by the change of an external environment, and the maximum power point can be found and tracked according to voltage, current and power information output by a photovoltaic array; by the adoption of a selection strategy of partial optimization maintaining and partial random selection, partial optimization in the search process can be effectively avoided, and the position of the maximum power point can be finally accurately positioned; therefore, the search efficiency is improved.

Description

technical field [0001] The invention relates to the field of photovoltaic power generation systems, in particular to a maximum power point tracking method based on fireworks algorithm. Background technique [0002] As one of the most ideal new energy sources in nature today, solar energy has received more and more attention. Compared with other green renewable new energy sources, solar energy has the characteristics of abundant reserves, wide distribution range and clean energy. Solar photovoltaic power generation occupies a large proportion of renewable energy and new energy, and is recognized by the whole society as the new energy technology with the most development potential in the world. [0003] Under a certain light intensity and ambient temperature, the output power of the photovoltaic array changes with the output voltage, and the output power can reach the maximum value only at a certain output voltage value. To improve the overall efficiency of the photovoltaic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/67G06F17/15
CPCG05F1/67G06F17/15Y02E10/56
Inventor 蔡世冠严广季灿陈凯刘毅
Owner CHINA UNIV OF MINING & TECH
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