FIELD: automatic control systems for protecting high voltage adjustable rectifiers for powering gas cleaning filters in various industrial branches and in agriculture.
SUBSTANCE: on disruption of thyristors in ac to method, phase of load current impulse front φ is measured as well as thyristor key impulse front phase α, their difference is calculated and, when φ-α is greater than zero, signal is dispatched for disabling automatic switch in powering circuit of rectifier or value of duration of load current impulse T and duration of impulse of phase-shifting device generating impulses for controlling thyristor key t, are measured, value of their difference is computed and, if T-t is greater than zero, signal is formed for disabling automatic switch in power circuit of rectifier.
EFFECT: increased efficiency.
2 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR OVERVOLTAGE PROTECTION OF HIGH-VOLTAGE ADJUSTABLE RECTIFIERS | 2006 |
|
RU2324271C2 |
| METHOD OF AUTOMATIC CONTROL OVER VOLTAGE OF ELECTRIC FILTER | 1998 |
|
RU2147469C1 |
| METHOD OF AUTOMATIC CONTROL OVER ELECTRIC FILTER BY DISCHARGES | 2010 |
|
RU2455075C2 |
| METHOD FOR AUTOMATIC CONTROL OF ELECTRIC FILTER VOLTAGE ACCORDING TO BREAKDOWN (VARIANTS) | 2000 |
|
RU2166999C1 |
| METHOD OF AUTOMATIC CONTROL OVER VOLTAGE OF ELECTRIC FILTER | 1998 |
|
RU2147468C1 |
| ELECTRIC FILTER VOLTAGE AUTOMATIC CONTROL METHOD | 2004 |
|
RU2266161C1 |
| METHOD FOR AUTOMATIC DETERMINATION, SELECTION AND CONTROL OF MODE OF ELECTRIC POWER SUPPLY OF FILTER | 2000 |
|
RU2168368C1 |
| METHOD FOR AUTOMATIC CONTROL OF FILTER SUPPLY MODE | 2008 |
|
RU2384370C1 |
| METHOD OF SPEEDUP VOLTAGE RECOVERY AT FILTER ELECTRODES AFTER SPARK (ARC) BREAKDOWN | 2008 |
|
RU2399426C2 |
| METHOD OF AUTOMATIC FORCED VOLTAGE RECOVERY AFTER VARIOUS CHARACTER OF ARC-THROUGHS IN THE ELECTROSTATIC PRECIPITATOR | 2017 |
|
RU2660157C1 |
