DCM (discontinuous conduction mode) control method of wind power generation current transformer BOOST circuit

A control method and converter technology, applied in wind power generation, adjusting electrical variables, control/regulation systems, etc., can solve problems such as steady-state error, tracking reference current deviation, and inability to achieve unlimited real-time sampling data of analog control technology

Active Publication Date: 2014-04-23
BEIJING ETECHWIN ELECTRIC
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in digital control technology, using the method of discrete sampling control cannot achieve unlimited real-time sampling data in analog control technology. Therefore, in order to accurately track the reference current, in digital discrete c...

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
  • DCM (discontinuous conduction mode) control method of wind power generation current transformer BOOST circuit
  • DCM (discontinuous conduction mode) control method of wind power generation current transformer BOOST circuit
  • DCM (discontinuous conduction mode) control method of wind power generation current transformer BOOST circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0037] figure 1 A direct drive wind power generation system is schematically shown. figure 2 Schematically shows the machine-side converter module in the direct-drive wind power generation system. image 3 It is a schematic diagram of various signal quantities in the discontinuous operation mode (DCM mode) of the boost circuit of the converter according to the embodiment of the present invention. Figure 4 It schematically shows the simulation results of the boost control model in DCM mode according to the embodiment of the present invention.

[0038] In a real converter system, figure 2 The boost chopper booster circuit 1 can be used in parallel by multiple groups of the same units. The present invention takes figure 2 The circuit in is used as an example to illustrate the average current model control method of the boost chopper boost circuit working...

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 DCM control method of a wind power generation current transformer BOOST circuit. By use of a digital control technology, operation control is carried out in a microprocessor or a digital signal processor chip through software. The invention describes the mechanism of the DCM of a boost chopper boost circuit under the digital control technology, brings forward a realization method of accurately describing digital discretization control under the DCM, and points out a determining method of the DCM and a CCM (continuous conduction mode). Of course, the method provided by the invention is also applied to the CCM. According to a boost control model in the embodiment of the invention, no stable state errors are generated, and reference current can be accurately tracked.

Description

technical field [0001] The invention relates to a control method of a BOOST circuit, in particular to a DCM mode control method of a BOOST circuit of a wind power converter. Background technique [0002] At present, most of the megawatt-level direct-drive wind power generation systems use such as figure 1 The shown back-to-back dual PWM converters are used as power converters, and the basic structure is AC-DC-AC topology. The back-to-back dual PWM converter includes: Du / dt filter 3 , AC / DC unit 1 , DC / AC unit 2 , and transformer 4 . The three-phase alternating current generated by the wind turbine is rectified into direct current through the machine-side converter module (AC / DC unit) 1, the energy is stored on the DC bus, and then inverted through the grid-side converter module (DC / AC unit) 2, The energy on the DC bus is converted into three-phase power that the grid can receive, thus forming an energy conversion loop from the motor to the grid, realizing energy transfer. ...

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): H02M3/157
CPCY02E10/76
Inventor 尹进峰郭锐阮景峰蒋中川刘炳
Owner BEIJING ETECHWIN ELECTRIC
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