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A method and device for optimizing the pi parameters of a permanent magnet fan

A parameter and fan technology, which is applied in the field of PI parameter optimization of permanent magnet fans, can solve the problems of large discrete size, low efficiency, and dependence on production experience, and achieve the effects of improving optimization speed, high efficiency, and solving low efficiency

Active Publication Date: 2022-04-01
LINGNAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The effect of PI control algorithm depends on the link parameter K of the controller P 、K i However, the wind power of the wind farm is nonlinear, and some uncertain factors such as weather changes, frequency changes, and grid voltage need to be considered, and the wind speed usually changes in a highly random and fast time-varying mode, and the generator speed changes The discrete type is very large, so it is difficult for the wind turbine to achieve the maximum wind power
The traditional parameter optimization method is usually that the operator obtains the target parameters after repeated debugging in the actual system. This method is inefficient and relies heavily on production experience; hard to accomplish

Method used

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  • A method and device for optimizing the pi parameters of a permanent magnet fan
  • A method and device for optimizing the pi parameters of a permanent magnet fan
  • A method and device for optimizing the pi parameters of a permanent magnet fan

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Embodiment 1

[0047]In a specific embodiment, the present invention realizes the optimization of the PI control of the permanent magnet fan through the improved firefly algorithm. The firefly algorithm (Firely Algorithm, FA) is developed by simulating the biological characteristics of adult worms in nature. It is a heuristic algorithm and a random optimization algorithm based on groups. In the swarming activities of fireflies, each firefly emits fluorescence Su and its companions exchange information such as finding food and courtship. Generally speaking, the fireflies with brighter luciferin have stronger appeal, and eventually many fireflies will gather around some fireflies with brighter luciferin. A firefly has no gender, it will be attracted to all other fireflies that are brighter than itself; the attraction of a firefly is proportional to the relative brightness, for any two fireflies, one of them will go to the other brighter than it. Only moving, however, the relative brightness d...

Embodiment 2

[0112] In yet another specific embodiment, the present invention also provides a device for optimizing PI parameters of a permanent magnet fan, which can implement the method described in Embodiment 1. In a specific embodiment, the device can be set as follows:

[0113] The wind speed detection module is used to detect the current wind speed;

[0114] The parameter optimization calculation module, based on the objective function and the current wind speed, calculates the global optimal solution of the objective function through the firefly algorithm, and outputs the optimal value corresponding to the wind speed in the previous stage, so as to obtain the optimized PI parameters;

[0115] The wind speed judging module obtains the wind speed in the previous stage, and controls the parameter optimization calculation module to perform calculation or stop based on the difference between the current wind speed and the wind speed in the previous stage.

[0116] More preferably, the p...

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Abstract

The present invention provides a method and device for optimizing PI parameters of a permanent magnet fan. The device includes: a wind speed detection module for detecting the current wind speed; a parameter optimization calculation module for calculating the target function through the firefly algorithm based on the target function and the current wind speed The global optimal solution for outputting the optimal value corresponding to the wind speed of the previous stage, thereby obtaining the optimized PI parameter; the wind speed judging module, obtaining the wind speed of the previous stage, and based on the difference between the current wind speed and the wind speed of the previous stage , controlling the parameter optimization calculation module to perform calculation or stop. The technical scheme of the invention can adapt to the multi-parameter optimization of the wind power generating set in the environment of variable wind speed in actual application, has high calculation accuracy, and can effectively avoid falling into local optimum.

Description

technical field [0001] The invention belongs to the field of wind power generation, and in particular relates to a method for optimizing PI parameters of a permanent magnet fan based on an adaptive multi-dimensional firefly algorithm under different wind speeds. Background technique [0002] Energy is an important material basis for the progress of human society and economic development. The scale and speed of the development of the energy industry affect the development of the social economy. In the early 1970s, due to the "oil crisis", there was a shortage of resources. People realized that conventional fossil energy The instability and limitation of natural gas and the environmental pollution and resource shortage caused by its massive consumption make people start looking for clean and renewable resources. Compared with traditional fossil energy such as oil and natural gas, new energy has the characteristics of less pollution. It is helpful to solve the shortage of resou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B11/42
CPCG05B11/42
Inventor 王树文王思文刘宇凝远航修成刘子铭沙永婧邱玥潼李晓维
Owner LINGNAN NORMAL UNIV