Maximum power tracking device for mini permanent magnetic direct drive wind power generation system and control method

A wind power generation system, a technology of maximum power tracking, which is applied in the control of wind turbines, wind energy generation, wind turbines, etc., and can solve problems such as power loss, misjudgment, and difficulty in achieving accurate wind speed measurement.

Inactive Publication Date: 2013-12-11
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
View PDF6 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has two disadvantages: one is that it is difficult to achieve accurate measurement of wind speed
The realization of P&O is relatively easy, but the found operating point can only oscillate near

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Maximum power tracking device for mini permanent magnetic direct drive wind power generation system and control method
  • Maximum power tracking device for mini permanent magnetic direct drive wind power generation system and control method
  • Maximum power tracking device for mini permanent magnetic direct drive wind power generation system and control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0068] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0069] figure 1 It is a hardware structure diagram of the embodiment of the present invention, wherein the main parameters of the small permanent magnet direct drive wind power generator 2 are: the diameter of the wind wheel is 1.2m, the rated power is 300W, the rated voltage is 24V, the rated speed is 800r / min, and the starting wind speed 1m / s, rated wind speed 10m / s, safe wind speed 25m / s; the main parameters of the maximum power tracking device are: MPPT controller adopts dsPIC33FJ06GS101 microcontroller, DC-DC converter adopts Boost circuit, drive module adopts MCP14E3, voltage sensor adopts LV28-P, current sensor 8 uses LA25-NP, wind speed sensor 1 uses JL-FS2, a total of 5 pieces: respectively installed on the f...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a maximum power tracking device for a mini permanent magnetic direct drive wind power generation system and a control method in the technical field of wind power generation, wherein the maximum power tracking device comprises a fan, an MPPT (maximum power point tracking) controller, a rectifier, n air velocity transducers, a revolution speed transducer, a voltage transducer, a current transducer, a DC-DC (direct current to direct current) converter, a driver module, a first capacitor, a second capacitor and a load; the control method comprises the following steps of acquiring air velocity vectors by utilizing the air velocity transducers arranged at different positions, collecting a large number of air velocity vector-optimal revolution speed practical samples, establishing an air velocity-optimal revolution speed prediction model by utilizing a support vector machine, and carrying out the maximum power tracking by combining the prediction model with a small-step perturbation and observation method. The maximum power tracking device for the mini permanent magnetic direct drive wind power generation system and the control method, disclosed by the invention, have the advantages that the tracking speed is increased, and the power loss of a perturbation process is effectively reduced; after the characteristics of a fan changes, the prediction precision is ensured by repeatedly collecting samples and training a new prediction model.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a maximum power tracking device and a control method of a small permanent magnet direct drive wind power generation system. Background technique [0002] With the increasingly tense energy situation, distributed power generation and energy-saving technologies represented by small-scale wind power generation have attracted more and more attention and become a current research hotspot. [0003] Wind energy is a kind of energy with great randomness. To ensure the maximum capture of wind energy, the variable speed wind power generation system generally adopts the control strategy of maximum power point tracking (MPPT). For small permanent magnet direct drive wind power generation systems, commonly used MPPT methods include optimal speed setting, disturbance observation and other methods. [0004] The principle of the optimal speed setting method is: under a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F03D7/00
CPCY02E10/72
Inventor 刘卫亮马良玉刘长良林永君马进
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap