Asymmetric input multi-level convert device and control method

A multi-level conversion and control method technology, applied in the direction of converting AC power input to DC power output, output power conversion devices, electrical components, etc., can solve the problem of increasing the number of DC power supplies and switching devices, and unbalanced bus capacitor voltage , increase the cost of power devices and inverters, etc.

Active Publication Date: 2019-12-13
ZHENGZHOU UNIV
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional diode-clamped inverter has the problem of unbalanced bus capacitor voltage, and an additional hardware clamp circuit can balance the capacitor voltage, but this will increase the number of power devices and the cost of the inverter to a certain extent; A large number of clamping capacitors are required in the transformer
A large number of capacitors increases the vol

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
  • Asymmetric input multi-level convert device and control method
  • Asymmetric input multi-level convert device and control method
  • Asymmetric input multi-level convert device and control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] The technical solutions of the present invention will be described in further detail below through specific implementation methods.

[0044] Such as figure 1 As shown, an asymmetric input multi-level converter device includes a switched capacitor unit X and a full bridge unit Y, and the switched capacitor unit X and the full bridge unit Y are connected to each other.

[0045] Specifically, the switched capacitor unit X includes a first DC input voltage source V in1 , the second DC input voltage source V in2 , the first electrolytic capacitor C 1 , the first diode D 1 , the second diode D 2 , the third diode D 3 , the first switch tube S 1 , the second switch tube S 2 , the third switch tube S 3 and the fourth switch tube S 4 ; The first diode D 1 anode of the first switching tube S 1 collectors of both and the second DC input voltage source V in2 connected to the anode of the first diode D 1 cathode of the fourth switching tube S 4 The collectors of both a...

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 provides an asymmetric input multi-level converter device, which comprises a switched capacitor unit X and a full bridge unit Y, wherein the switched capacitor unit X comprises a first DC input voltage source Vin1, a second DC input voltage source Vin2, a first electrolytic capacitor C1, a first diode D1, a second diode D2, a third diode D3, a first switch tube S1, a second switch tube S2, a third switch tube S3, and a fourth switch tube S4; and the full bridge unit Y includes a fifth switch tube S5, a sixth switch tube S6, a seventh switch tube S7, and an eighth switch tube S8.The invention also provides a control method for the converter device. More-level output with fewer devices can be realized, the driving circuit required by the converter device is simplified, the making cost of the converter device is reduced, the converter device provided in the invention has multiple input ports, and the application in a multi-input source situation is more flexible.

Description

technical field [0001] The invention relates to the field of distributed power generation and micro-grid, in particular to an asymmetric input multi-level converter and a control method. Background technique [0002] In recent years, with the increasing environmental pollution and energy shortage, new energy power generation has attracted more and more attention. Photovoltaic, wind power and other forms of power generation have been recognized as ideal substitutes for fossil energy due to their environmental friendliness and good economic benefits. In order to make new energy more widely used, scholars at home and abroad have proposed a series of new inverters from the perspectives of improving output power quality, reducing total loss, and reducing the size of output filters and transformers. Among them, the multilevel inverter is more and more widely used by virtue of its unique advantages. Compared with the output waveform of traditional inverters, this type of inverter...

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): H02M7/483
CPCH02M7/483H02M1/0083
Inventor 王要强王哲刘文君王金凤陈根永梁军王克文朱亚昌
Owner ZHENGZHOU 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