Troubleshooting Current Unbalance Faults in the Drives Service Testing Area
Silén, Juho (2022)
2022
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-2022052712410
https://urn.fi/URN:NBN:fi:amk-2022052712410
Tiivistelmä
This thesis project was commissioned by ABB, a global manufacturer of frequency converters and electrical drives etc. The purpose of this thesis project was to alleviate the time and effort required to fix repeatedly occurring current unbalance faults in the Drives Service testing area in Helsinki. This thesis project was focused on current unbalance faults occurring in ACS800-104 frequency converter modules.
In order to create effective and streamlined guidelines for troubleshooting current unbalance faults, earlier instances of known current unbalance faults regarding the testing of ACS800-104 frequency converter modules were examined and analyzed to find any similarities among the instances. These instances had been documented by the testing area’s employees, but the instances had never been studied further. Through the analysis of the data regarding these instances, some similarities among the causes for current unbalance faults were discovered, and these similarities were taken into account in the creation of the troubleshooting guidelines.
To make the guidelines as efficient and streamlined as possible, the frequency at which each cause for a current unbalance fault occurred was cross-referenced with the amount of time and effort needed to fix each cause. The guidelines were then created with the help of various experts employed by ABB.
Due to the scarcity of data available on current unbalance faults regarding the ACS800-104 frequency converter modules, creating consistently helpful guidelines proved challenging in the course of the project. Therefore, a plan to implement tests with the aim of fabricating current unbalance faults through the manipulation of frequency converter modules was created simultaneously with the project. However, these tests were not implemented during this project.
The guidelines for troubleshooting current unbalance faults were to be written in a manner that would enable any necessary updates to the guidelines in the future, when more data regarding current unbalance faults could be analyzed. The document containing these guidelines was to be distributed for ABB internal use only.
In order to create effective and streamlined guidelines for troubleshooting current unbalance faults, earlier instances of known current unbalance faults regarding the testing of ACS800-104 frequency converter modules were examined and analyzed to find any similarities among the instances. These instances had been documented by the testing area’s employees, but the instances had never been studied further. Through the analysis of the data regarding these instances, some similarities among the causes for current unbalance faults were discovered, and these similarities were taken into account in the creation of the troubleshooting guidelines.
To make the guidelines as efficient and streamlined as possible, the frequency at which each cause for a current unbalance fault occurred was cross-referenced with the amount of time and effort needed to fix each cause. The guidelines were then created with the help of various experts employed by ABB.
Due to the scarcity of data available on current unbalance faults regarding the ACS800-104 frequency converter modules, creating consistently helpful guidelines proved challenging in the course of the project. Therefore, a plan to implement tests with the aim of fabricating current unbalance faults through the manipulation of frequency converter modules was created simultaneously with the project. However, these tests were not implemented during this project.
The guidelines for troubleshooting current unbalance faults were to be written in a manner that would enable any necessary updates to the guidelines in the future, when more data regarding current unbalance faults could be analyzed. The document containing these guidelines was to be distributed for ABB internal use only.