Method and apparatus to regulate a voltage controller

Details Method and apparatus to regulate a voltage controller Method and apparatus to regulate a voltage controller

1996-01-11

1997-11-18

Nguyen, Matthew V.

Electricity: power supply or regulation systems

Output level responsive

Phase controlled switching using electronic tube or a three...

G06F 110

Patent

active

056891776

ABSTRACT:
The present invention is directed to an automatic voltage controller for an electrostatic precipitator. The invention maintains a database of operating parameters, such as the firing angle of the silicon controlled rectifiers, during previous breakdowns. The data is used for statistical analysis of the process conditions of the precipitator, enabling the invention to more accurately predict the breakdown level of the system, and providing tolerance of erratic or atypical breakdowns. The invention assembles a "rolling" data set of a predetermined number of previous breakdowns from which the invention continuously extracts a mean value and a standard deviation value, which are used to determine the setback level and the ramp level.

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