| Autor: |
Petro Stakhiv, Volodymyr Tsyapa, Yaroslav Paranchuk |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
2020 IEEE 15th International Conference on Advanced Trends in Radioelectronics, Telecommunications and Computer Engineering (TCSET). |
| Popis: |
This paper presents a principle for the adjustment of an AC welding arc current to improve electromagnetic compatibility of a welding unit and supply network To implement the proposed principle, we have developed a power circuit diagram of a thyristor welding power source and obtained a mathematical description of the diagram at the instantaneous level based on differential equations. A computer model was created to study welding arc current waveforms. The computer simulations were performed to evaluate higher harmonics and a current distortion factor for different power source diagrams when the current is adjusted by thyristor groups. The obtained research results showed a decrease in the distortion of the current waveforms when it is adjusted by parallel thyristor-reactor groups providing that a required adjustment range is observed. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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