Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Modular inverter-motor integrated system based on series H bridges and application

An integrated system and inverter technology, applied in the control system, AC motor control, irreversible DC power input conversion to AC power output and other directions, can solve the problems of high maintenance cost and poor reliability of underground motor drive, and reduce the System cost, good real-time performance, and the effect of reducing switching loss

Active Publication Date: 2021-11-02
HUAZHONG UNIV OF SCI & TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the defects and improvement needs of the prior art, the present invention provides a modular inverter-motor integrated system and its application based on series H bridges, which are used to solve the technical problems of poor driving reliability and high maintenance cost of downhole motors

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
  • Modular inverter-motor integrated system based on series H bridges and application
  • Modular inverter-motor integrated system based on series H bridges and application
  • Modular inverter-motor integrated system based on series H bridges and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0030] The invention provides a modular inverter-motor integrated system based on series H bridges, comprising:

[0031] Three groups of H-bridge modules, the three groups of H-bridge modules are all connected in parallel on the DC bus to form a three-phase inverter; wherein, each group of H-bridge modules includes N H full-bridge sub-modules connected in series, and N is greater than or equal t...

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 modular inverter-motor integrated system based on series H bridges and application, and belongs to the technical field of power electronics. The integrated system comprises three groups of H bridge modules and a three-phase motor, wherein the three groups of H bridge modules are connected in parallel on a direct current bus to form a three-phase inverter; each group of H-bridge modules comprises N H full-bridge sub-modules connected in series, and N is an integer greater than or equal to 2; each H full-bridge sub-module comprises a direct-current capacitor and four power switch devices; each phase of winding of the three-phase motor consists of N segmented windings which are independent of one another; and one segmented winding is connected behind each H full-bridge sub-module to serve as a load. In this way, the problem that a conventional three-phase bridge type inverter does not have the fault-tolerant capability can be solved; meanwhile, due to the fact that the H-bridge series connection structure is adopted, the power supply voltage of each H full-bridge sub-module can be reduced, a low-voltage power switch device can be adopted, and the capacity, the size, the weight and the cost of the inverter are reduced.

Description

technical field [0001] The invention belongs to the technical field of power electronics, and more specifically relates to a modular inverter-motor integration system based on a series H bridge and its application. Background technique [0002] With the rapid development of today's society, human beings' demand for energy is increasing, especially for oil, so higher requirements are put forward for the efficiency of oil extraction. The downhole oil production system is mainly composed of three parts: the surface part, the downhole part and the middle part connecting the downhole and the surface. The ground part mainly includes frequency converters, transformers and power distribution equipment, etc., and its main function is to supply power to the downhole motor and realize the frequency conversion control of the motor; the middle part mainly includes cables, whose function is to transmit the electric energy from the ground to the downhole and provide power for the downhole ...

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): H02M7/48H02M7/5387H02M1/32H02P27/08
CPCH02M7/48H02M7/53871H02M1/32H02P27/085Y02E40/40
Inventor 王晋陈浩周理兵陈庆
Owner HUAZHONG UNIV OF SCI & TECH
Features
  • Generate Ideas
  • 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