Unlock instant, AI-driven research and patent intelligence for your innovation.

Chain link ageing testing device for chain type inverter systems and method

An inverter system and aging test technology, applied in the field of power quality management, can solve problems such as large equipment investment, achieve the effect of reducing test cost and improving test efficiency

Active Publication Date: 2014-08-06
JIANGSU WEIFAN INTELLIGENT ELECTRICAL TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Purpose of the invention: To propose a chain inverter system chain link aging test device and method, which does not need to be equipped with a high-voltage DC power supply to supply power to the DC side during the test, and the size of the reactor will be greatly reduced, which can solve the problem of large equipment investment ; During the test process, the same aging time can be used to test two sets of equipment, which can increase the production capacity of the chain link under the same hardware conditions

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
  • Chain link ageing testing device for chain type inverter systems and method
  • Chain link ageing testing device for chain type inverter systems and method
  • Chain link ageing testing device for chain type inverter systems and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1, a chain link inverter system link aging test device, including two H-bridge inverters, AC power supply and DSP control circuit, the two H-bridge inverters are respectively chain link 1 and chain link The DC bus voltage of link 2, link 1 and link 2 is provided by an AC power supply, and the output terminals of link 1 and link 2 are connected to the AC power supply through an inductor. The chain link aging test device of the chain inverter system It also includes a current sensor for detecting the current of chain link 1 and chain link 2. The current sensor is connected in series in the circuit, and its output terminal is connected to the input terminal of the DSP control circuit. The DSP control circuit includes a phase-locked loop, a PWM pulse sequence and a DC voltage For balance control, the input terminal of the DSP control circuit is the AC power supply, the output terminal of the current sensor and the DC voltage, and the output terminal of the DSP con...

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 a chain link ageing testing device for chain type inverter systems and a method. The chain link ageing testing device comprises two H-bridge inverters, an alternating-current power source and a DSP (digital signal processing) control circuit. The method is used for testing chain link ageing by the aid of the device. Ageing of chain links in the chain type inverter systems is tested by the aid of the two H-bridge inverters. By the aid of the testing device and the method, testing cost can be reduced, and testing efficiency is enhanced.

Description

technical field [0001] The invention relates to a related equipment platform in the field of power quality management, belongs to the technical field of electrical automation equipment, and in particular relates to a link aging test device and method of a chain inverter system. Background technique [0002] H-bridge inverters are widely used in various converter devices, such as high-voltage variable frequency drive (MVD), new static synchronous compensator (STATCOM), new energy power generation inverter, dynamic voltage recovery period (DVR), and source filter (APF), etc. [0003] The new static synchronous compensator (STATCOM) using chained inverter is also called chained static synchronous compensator, and its single H-bridge inverter is also called chain link, which is a key part of STATCOM, and the reliability of the chain link is directly To determine the reliability of STATCOM, each chain link needs to be subjected to a load aging test before leaving the factory to ...

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 Patents(China)
IPC IPC(8): G01R31/40
Inventor 邹积勇杨立军黄秋燕杨志薛恒怀吴新兵
Owner JIANGSU WEIFAN INTELLIGENT ELECTRICAL TECH