Supercharge Your Innovation With Domain-Expert AI Agents!

High-voltage frequency converter power unit testing system and method

A high-voltage frequency converter and power unit technology, applied in the field of frequency converter testing, can solve the problems of messy and complicated test data analysis and recording, inability to guarantee the accuracy of test data, and hidden safety hazards in manual testing, and achieve simple, reliable and traceable test methods. The effect of strong sex, avoiding clutter and random errors

Inactive Publication Date: 2019-05-28
DAYU ELECTRIC
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a cumbersome and heavy workload test method will cause greater randomness in the test, and the accuracy of the test data cannot be guaranteed, and the analysis and recording of the test data will be messy and complicated. Under voltage, there are certain safety hazards in the way of manual testing

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
  • High-voltage frequency converter power unit testing system and method
  • High-voltage frequency converter power unit testing system and method
  • High-voltage frequency converter power unit testing system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0040] see figure 1 As shown, the embodiment of the present invention provides a power unit test system of the high-voltage inverter in the embodiment, including a pre-charging circuit 1 , a gear selection circuit 2 , a host computer 3 and a control module 4 . Wherein, the pre-charging circuit 1 is connected with the power unit 5 under test, and is used for pre-charging the power unit 5 under test, and the gear selection circuit 2 includes at least two load branches connected in parallel and having load resistors with different resistance values, and There is a gear switch on each load branch. The gear switch is used to control whether the load branch is connected to the power unit test system for testing. The upper computer 3 is used to issue test instructions. For the actual power of unit 5, input the corresponding test command program on th...

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 high-voltage frequency converter power unit testing system and method. The device comprises a pre-charging circuit, a gear selection circuit, an upper computer and a controlmodule. the pre-charging circuit is used for pre-charging power units under test, the gear selection circuit comprises at least two parallel load branches with load resistors of different resistance values, the upper computer is used for issuing test instructions, the control module chooses the corresponding load branch according to the received test instructions, the power units under test are tested separately to obtain no-load and on-load test data of the power units under test, and the no-load and on-load test data is compared with internal data separately. According to high-voltage frequency converter power unit testing system and method, unit modules of different power levels in the same test system can be tested, the test work is simplified, and the accuracy and safety are improved.

Description

technical field [0001] The invention relates to the technical field of frequency converter testing, in particular to a power unit testing system of a high-voltage frequency converter and a testing method thereof. Background technique [0002] At present, the high-voltage inverter adopting unit cascade topology is composed of multiple power unit modules in series. As the core component of the high-voltage inverter, the performance of the power unit module will directly affect the normal operation of the entire high-voltage inverter. All parameters of the power unit module are tested accurately and comprehensively. The content of the test includes the state of the fuse inside the power unit, the state of the voltage equalizing resistor, the voltage and current detection of the input and output of the power unit, the overvoltage and undervoltage protection test, the IGBT wave test, etc. There are many items and test data to be tested. At the same time, due to the large number ...

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): G01R31/00
Inventor 邹缙史望龙李崇波肖少兵王怡华程智鹏周骏
Owner DAYU ELECTRIC
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