| Autor: |
Titu Niculescu, Florin Popescu, Ioan Razvan Slusariuc, Marius Marcu |
| Rok vydání: |
2018 |
| Předmět: |
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| Zdroj: |
2018 International Conference on Applied Mathematics & Computer Science (ICAMCS). |
| DOI: |
10.1109/icamcs46079.2018.00023 |
| Popis: |
For the study, the evaluation and visualization of switching processes, modern computer-aided measurement elements associated with high-speed data acquisition systems are used. In the paper is presented a method of study of switching phenomena using a NI USB data acquisition system produced by National Instruments. It is well known that the acquisition software provided by the manufacturing company is LabView. In the paper is presented a more efficient alternative method, based on the use of MATLAB software, and a design interface circuit attached to the NI USB system. In industrial electrical installations frequently occur situations where inductive circuits are connected to alternating current sources. The operation is accompanied by the emergence of transient modes characterized by the presence of surges and high instantaneous power for very short duration at the terminals of the inductive circuit. They can endanger the circuit elements. For a representative value of the connected circuit inductance, the voltage variation diagrams on the coil and the instantaneous power dissipated on them are plotted. The study method is the acquisition of data using a MATLAB program designed for the interface circuit presented in the paper and the NI USB data acquisition system. The measurement method highlights its superiority compared to the use of LabView software. In the paper, both aspects of the switching are addressed, both by connecting an inductive circuit to an alternative voltage source and by disconnecting it from the source. Because in the introduction of the paper the theoretical phenomenon is presented both during connection and disconnection, in the conclusions are explained the differences that occur between the theoretical situation and the experimental results obtained from the measurement process with the help of the described method. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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