Supercharge Your Innovation With Domain-Expert AI Agents!

Isolated modular multilevel converter topological structure based on hybrid module

A modular multi-level, topological structure technology, applied in the direction of adjusting electric variables, output power conversion devices, DC power input conversion to DC power output, etc., to achieve the effect of reducing volume, reducing voltage stabilizing capacitors, and increasing density

Active Publication Date: 2019-04-16
浙江华云清洁能源有限公司 +1
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, it overcomes the problems of single-stage converter secondary side commutation and voltage spikes, and has three ports of high-voltage AC, high-voltage DC and low-voltage DC

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
  • Isolated modular multilevel converter topological structure based on hybrid module
  • Isolated modular multilevel converter topological structure based on hybrid module
  • Isolated modular multilevel converter topological structure based on hybrid module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029]Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0030] refer to Figure 1 to Figure 4 An isolated modular multilevel converter topology based on a hybrid module. The converter includes three phase units connected in parallel at the high-voltage DC side port. Each phase unit is composed of upper and lower bridge arms. After the connection point of the arm is drawn out, a filter inductor is connected in series as the high-voltage AC side port. Each bridge arm is composed of x single-stage isolated chopper sub-modules, y single-stage isolated full-bridge sub-modules and a bridge arm reactor. .

[0031] The converter is a three-phase system structure such as figure 2 , consisting of a single-stage isolated chop...

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 an isolated modular multilevel converter topological structure based on a hybrid module. The converter comprises three phase units which are connected to a high-voltage direct-current side port in parallel. Each phase unit is composed of an upper bridge arm and a lower bridge arm, a filter inductor is connected in series to form a high-voltage alternating-current side portafter being led out from a connecting point of the upper bridge arm and the lower bridge arm of each phase, and each bridge arm is composed of x single-stage isolation type chopping sub-modules, y single-stage isolation type full-bridge sub-modules and a bridge arm reactor. The method has the advantages that the method is used; According to the invention, the limitation that the voltage levels ofthe high-voltage direct-current side and the high-voltage alternating-current side of the traditional MMC are in a fixed proportion is overcome; By changing the number of the ICC module and the IBC module, different medium-voltage AC / DC voltage grade ratios can be realized, the submodule combines a high-frequency link technology with a modular multi-level technology, and the post-stage part of each module, namely the high-voltage side, does not need to support a capacitor or perform voltage-sharing control.

Description

technical field [0001] The present invention relates to an isolated modular multilevel converter topology based on hybrid modules. Background technique [0002] In recent years, solar power, wind power and other renewable energy power generation has become the development direction of the future power system due to the need for energy-saving and low-energy sustainable development. The isolated medium-voltage AC-DC hybrid conversion technology will play an important role in the future new energy AC-DC hybrid smart grid. Currently, cascaded H-bridge and modular multilevel converter (MMC) topologies are widely used. The proposed medium-voltage grid-connected power generation system has the following main problems. [0003] 1. The voltage level of the traditional MMC high-voltage DC side and high-voltage AC side is a fixed ratio, which has certain limitations. The ratio of different voltage levels on both sides of the high-voltage AC and DC can only be changed by connecting a...

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): H02M3/335H02J3/38
CPCH02J3/381H02M3/33576
Inventor 刘闯蔡国伟应鸿沈宝兴陈琦吴星昂於国芳裴忠晨
Owner 浙江华云清洁能源有限公司
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