| Autor: |
Dudkin, M. M., Kushnarev, V. A., Grigoriev, M. A. |
| Zdroj: |
Russian Electrical Engineering; Feb2022, Vol. 93 Issue 2, p81-88, 8p |
| Abstrakt: |
The principles of synchronization of active rectifiers of valve converters with a supply network based on a synchronization device with tracking fixation of points of natural switching of the mains voltage (SD-TF) and the principles of its interval-code diagnostics are considered. Timing diagrams of signals for a healthy state of the SD-TF and for various catastrophic failures, including the disappearance of the phase voltage and incorrect alternation of phases of the mains voltage, as well as for malfunctions that occur in the SD itself, are given. A summary table of the decimal states of the SD-TF is given, with the possibility of diagnosing failures of the synchronization channel elements, as well as in the event of the disappearance of the phase voltage and incorrect alternation of phases, being shown on its basis. Minimization of the number of code states, which ensure the reliability of SD-TF diagnostics with localization of the fault location, is performed. A fragment of a functional diagram is given that explains the principle of constructing failure recognition channels in the SD-TF. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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