T-shaped three-level converter power module double-pulse testing loop and testing method

A technology of power module and test loop, applied in the field of double-pulse test loop of T-type three-level converter power module, can solve problems such as inability to be directly applied

Inactive Publication Date: 2016-09-28
XIAN XJ POWER ELECTRONICS TECH
View PDF6 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The double-pulse test is an important test link to detect the switching characteristics, drive protection performance and overvoltage absorption performance of the switching device, but the traditional two-level double-

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
  • T-shaped three-level converter power module double-pulse testing loop and testing method
  • T-shaped three-level converter power module double-pulse testing loop and testing method
  • T-shaped three-level converter power module double-pulse testing loop and testing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] In order to further illustrate the technical solutions adopted by the present invention, the specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings. This embodiment is only suitable for illustrating and explaining the present invention, and does not constitute a limitation to the protection scope of the present invention.

[0030] as attached figure 1 As shown, a double-pulse test circuit of a T-type three-level converter power module of the present invention includes: a direct current source DC, an air switch SW 1 , DC support capacitor (C 1 、C 2 ), snubber capacitance (Cs 1 、Cs 2 ), air-core inductance L, double pulse source and bus voltage discharge branch circuit components (SW 2 , Rd).

[0031] The test circuit specifically includes: a T-type three-level converter power module and a DC source DC, and the T-type three-level converter power module includes two series-connected IGB...

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 T-type three-level converter power module double-pulse test circuit and a test method, comprising: a T-type three-level converter power module; two ends of a DC source connected in parallel with a discharge resistor and a bus capacitor; the bus capacitor It consists of two series-connected DC support capacitors, and the connection of the two series-connected DC support capacitors is connected to one end of two IGBT tubes with different directions; the first DC support capacitor and the two ends of the first DC support capacitor are connected in parallel with the first absorption capacitor and the second absorbing capacitor; a DC source switch is set at the positive end of the DC source, and a discharge branch switch is set at the positive end of the bleeder resistor. The air core inductor is connected to both ends of the first IGBT tube or the fourth IGBT tube. This test method can test various commutation conditions of the power module, device switching time, overvoltage absorption effect of the absorbing circuit and drive short-circuit protection, and provides an effective test method for the development of T-type three-level converters .

Description

【Technical field】 [0001] The invention belongs to the technical field of new energy power generation, and relates to a T-type three-level converter power module double-pulse test circuit and a test method. 【Background technique】 [0002] With the increasingly severe energy crisis and environmental pollution, the use of new energy sources including photovoltaic power generation has attracted more and more attention. The bidirectional AC / DC converter is an important topology in the field of new energy. Compared with the traditional two-level converter, the NPC three-level topology has the advantages of low loss and high efficiency. The T-shaped three-level topology is better than the traditional NPC three-electric The flat topology has the advantages of fewer components and balanced loss distribution. The double-pulse test is an important test link to detect the switching characteristics, drive protection performance and overvoltage absorption performance of the switching dev...

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): G01R31/00G01R31/26
CPCG01R31/00G01R31/2608G01R31/2617
Inventor 谢剑董晓帅郎学斌徐关澄孟向军牛化鹏张海龙姚为正
Owner XIAN XJ POWER ELECTRONICS TECH
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