Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Maximum power tracing and bus-bar voltage coordination control method of mixed field excitation wind power generation system

A wind power generation system and maximum power tracking technology, which is applied to control the direction of the generator through the change of the magnetic field, and can solve the problems of large device loss, slow dynamic response, and many PWM rectifier switching devices

Inactive Publication Date: 2009-02-18
SHANGHAI UNIV
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the PWM rectifier has many switching devices, the device loss is large, and the control is complicated, and the larger the wind energy capture range, the higher the system cost
The DC-DC converter not only has the same capacity as the rated capacity of the system, but also has high system cost; it also requires large-capacity capacitors and inductors, which has slow dynamic response and low reliability

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 tracing and bus-bar voltage coordination control method of mixed field excitation wind power generation system
  • Maximum power tracing and bus-bar voltage coordination control method of mixed field excitation wind power generation system
  • Maximum power tracing and bus-bar voltage coordination control method of mixed field excitation wind power generation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] Below in conjunction with accompanying drawing, a preferred embodiment of the present invention is described in detail:

[0041] image 3It is a schematic structural diagram of the hybrid excitation wind power generation system applied in this embodiment. The system consists of a wind turbine (1), a multi-phase hybrid excitation generator (2), an uncontrollable rectifier bridge (3), an inverter (4), an excitation controller (5), and a grid-side inverter control module (6 ), reactor (7) and capacitor (8). The multi-phase hybrid excitation generator (2) converts the wind energy absorbed by the wind turbine (1) into electrical energy, and transmits the electrical energy to the power grid through an uncontrollable rectifier bridge (3), an inverter (4), and a reactor (7). The grid-side inverter control module (6) controls the inverter (4) by detecting the voltage and current of the grid side to realize power transmission. The excitation controller (5) is composed of a con...

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 relates to a control method for tracking maximal power and coordinating bus-bar voltage of a mixing excitation wind power generation system, by regulating exciting current of the exciter. The exciting current is composed of a dynamic component and a steady state component. Not only dynamic response is good, but algorithm is simple and practical and convenient for implementing. Due to the exciting current of the exciter is needed to regulated, the energy effect of magnetic field control being high, the capacity of excitation controller being small, cost being low and reliability being high.

Description

technical field [0001] The invention relates to a new energy power generation technology, in particular to a maximum power tracking and bus voltage coordinated control method applied to a hybrid excitation wind power generation system. Background technique [0002] Wind power generation requires a system with simple structure, low cost, and reliable operation that can capture wind energy to the maximum and meet high-efficiency operation in a wide speed range. In order to maximize the capture of wind energy, wind power generation systems often use maximum power tracking control. According to the characteristics of the wind turbine, under a certain wind speed, the generator is operated at a certain speed, so as to capture the wind energy to the maximum extent and output the maximum power. At present, typical wind power generation systems include: asynchronous double-fed wind power generation system and permanent magnet synchronous wind power generation system. [0003] The t...

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): H02P9/14
Inventor 黄苏融洪文成张琪邹海晏
Owner SHANGHAI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com