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quinta-feira, 23 de julho de 2020

Automatic Test System for Type Tests of the Uninterruptible Power Supply by Esa Nummijoki School of Electrical Engineering Aalto University Finland




Automatic Test System for Type Tests of the Uninterruptible Power Supply by Esa Nummijoki
 School of Electrical Engineering Thesis submitted for examination for the degree of Master of Science in Technology. Aalto University Finland 

 Abstract of the Master's Thesis 

 Testing is an essential part of product development. In UPS product development, different tests are made every day. Testing requires large variety of measurement instruments and other equipment such as large load systems and different kind of test configurations. Significant number of performed tests are based on the UPS type tests defined in the IEC-62040 standard. Testing consumes a lot of time and that way also resources. To solve this problem, an automatic test system for type tests is considered. The aim of this thesis was to clarify the need for the automatic test system, and clarify requirements needed to realize it. The work was done by reviewing the type tests and different parts of an automatic test system. In addition, an experimentation was made, resulting a prototype. The prototype is able to automatically perform an indicative efficiency test for the UPS. Furthermore, a possibility to automate the most complex type test, a dynamic output performance test, was examined. This examination resulted a description of the test process and LabVIEW programs, supporting the execution of the test. However, the conclusion was that it is not sensible to automate the test, due to the fact that it is not often performed and automating the test requires a lot of time and resources. The review and the experimentation proved that realization of an automatic test system, able to perform all the type tests, requires large amount of time and resources. Due to this, the automatic test system for type tests is not the best solution to reduce the time and resources consumed by testing.
 Keywords: Automatic Test System, Uninterruptible Power Supply, Product Development, LabVIEW, TestStand, Prototype

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