Single-stage single-phase asymmetric full-bridge inverter

A full-bridge inverter, asymmetric technology, applied in the field of power electronics, can solve the problem of high cost, achieve the effect of low cost, high power density, and low output waveform distortion

Inactive Publication Date: 2021-06-18
QINGDAO UNIV
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above three schemes can eliminate the leakage current of photovoltaic cells to the ground, but the first two schemes need to add additional devices, and the cost is high

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
  • Single-stage single-phase asymmetric full-bridge inverter
  • Single-stage single-phase asymmetric full-bridge inverter
  • Single-stage single-phase asymmetric full-bridge inverter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] Such as figure 1 As shown, the present invention provides a single-stage single-phase asymmetric full-bridge inverter, including an energy storage inductor, a single-phase asymmetric inverter bridge, a boost buffer capacitor, and an output filter. The single-phase asymmetric The inverter bridge consists of five fully controlled power switches.

[0024] Wherein, the five fully-controlled power switches in the single-phase asymmetrical inverter bridge are two-quadrant power switches capable of withstanding unidirectional voltage stress and bidirectional current stress.

[0025] In this embodiment, the single-phase asymmetrical inverter bridge includes a first inverter bridge arm and a second inverter bridge arm, and the first power switch S 1 , the fifth power switch S 5 , the third power switch S 3 are sequentially connected...

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 the technical field of power electronics and particularly relates to a single-stage single-phase asymmetric full-bridge inverter. The inverter comprises an energy storage inductor, a single-phase asymmetric inverter bridge, a boost buffer capacitor and an output filter, wherein the single-phase asymmetric inverter bridge comprises five two-quadrant power switches capable of bearing unidirectional voltage stress and bidirectional current stress. The single-stage boost inverter has the advantages of single-stage boost conversion, capability of suppressing secondary ripple current of an input direct-current voltage source and common-mode current of an inverter system, high power density, high conversion efficiency, low distortion degree of an output waveform, high reliability, low cost and the like, and is suitable for small and medium-capacity single-phase boost inverter occasions.

Description

Technical field: [0001] The invention relates to the technical field of power electronics, in particular to a single-stage single-phase asymmetric full-bridge inverter. Background technique: [0002] With the continuous growth of people's demand for energy and the urgent need to improve the environment, new energy sources such as solar energy and wind energy will occupy an increasingly important position in the energy layout of various countries. Photovoltaic power generation system has the characteristics of easy cleaning and sustainability, long life, high efficiency and low cost, and has very broad development prospects in the power market. [0003] In recent years, due to the advantages of non-isolated photovoltaic inverters in terms of volume and cost, it has attracted widespread attention. The non-isolated photovoltaic inverter has secondary ripple power pulsation on the DC side, which will affect the performance of the photovoltaic system MPPT, reducing the system's ...

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): H02M7/5387H02M7/48H02M1/34H02M1/14H02M1/12H02J3/38
CPCH02M7/53871H02M7/48H02M1/34H02M1/14H02M1/126H02J3/381H02J2300/20H02J2300/24H02J2300/26H02J2300/28Y02E10/56
Inventor 江加辉
Owner QINGDAO UNIV
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