Method for accurately controlling phase selection closing angle
The invention discloses a method for accurately controlling a phase selection closing angle. The method is used for realizing accurate control of a thyristor closing input angle, and comprises the following steps: S1: a processor acquiring alternating current voltage through a high-speed analog-to-d...
Gespeichert in:
Hauptverfasser: | , , , , , , , , , , , , , |
---|---|
Format: | Patent |
Sprache: | chi ; eng |
Schlagworte: | |
Online-Zugang: | Volltext bestellen |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | The invention discloses a method for accurately controlling a phase selection closing angle. The method is used for realizing accurate control of a thyristor closing input angle, and comprises the following steps: S1: a processor acquiring alternating current voltage through a high-speed analog-to-digital conversion channel and acquiring a voltage zero crossing point position in combination with asmoothing algorithm; S2, the processor obtaining a voltage change period and configuring a timer; and S3, the processor starting a configured timer and performing closing through a thyristor. According to the method for accurately controlling the phase selection closing angle, a voltage zero point signal is acquired by using software, and interference and influence caused by jittering at a voltage zero point are effectively filtered by using a smoothing algorithm. Meanwhile, the thyristor is used as an actuating mechanism for closing, so that the response time is stable and extremely short, and the error of an actual |
---|