Supercharge Your Innovation With Domain-Expert AI Agents!

Direct-current active power filter and control method thereof

A technology of power filter and control method, which can be applied in the direction of reducing harmonics/ripples and complex mathematical operations in DC circuits, and can solve problems such as low reliability, poor ripple suppression effect, and no fault-tolerant function of DC active power filters. And other issues

Active Publication Date: 2020-10-13
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
View PDF11 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the embodiment of the present invention provides a DC active power filter and its control method to solve the problems in the prior art that the DC active power filter has no fault tolerance function, poor ripple suppression effect, 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
  • Direct-current active power filter and control method thereof
  • Direct-current active power filter and control method thereof
  • Direct-current active power filter and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0027] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0028] refer to figure 2 , the embodiment of the present invention provides a DC active power filter, including: a first switch S1, a second switch S2, a third switch S3, a fourth switch S4, a first switch K2, a second switch K3, the first bidirectional switch Q1, th...

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 is applicable to the technical field of power electronics, and provides a direct-current active power filter and a control method thereof. The direct-current active power filter comprises a first switch tube, a second switch tube, a third switch tube, a fourth switch tube, a first switch, a second switch, a first bidirectional switch, a second bidirectional switch, a first capacitorand a second capacitor; under the condition of switching tube failure, the switching states of the first switch, the second switch, the first bidirectional switch and the second bidirectional switch are reasonably switched; a topological circuit of the filter is reconfigured, and a fault phase is connected to the midpoint of the first capacitor and the second capacitor, so that the system continues to operate under the topology, the fault tolerance of the system is improved, the system can still operate normally after a switch tube fails, the ripple suppression effect is good, and the reliability is high.

Description

technical field [0001] The invention belongs to the technical field of power electronics, and in particular relates to a DC active power filter and a control method thereof. Background technique [0002] AC-DC hybrid microgrid refers to a small power generation and distribution system composed of distributed power sources, energy storage devices, energy conversion devices, related loads, monitoring and protection devices. It combines the advantages of AC microgrids and DC microgrids. It has been widely used in the field of electric power. [0003] refer to figure 1 , when the DC subnet and the AC subnet in the AC-DC hybrid microgrid are connected through the AC-DC bidirectional DC-AC converter, due to the voltage asymmetry of the AC side grid and the unbalanced power component of the AC-DC interconnection power, the AC-DC Ripple component appears in DC bus voltage in hybrid microgrid. The existence of ripple pollutes the power quality of the power supply network and serio...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H02J1/02G06F17/18
CPCH02J1/02G06F17/18
Inventor 高晓芝乔宇孙会琴田晋王磊陈灵芝
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com