Automatic back corona detection and protection system

Details Automatic back corona detection and protection system Automatic back corona detection and protection system

1992-07-17

1994-05-10

Ruggiero, Joseph

Boots, shoes, and leggings

95 6, 96 23, 323903, 364400, 364483, G05B 1302, B03C 368

Patent

active

053114205

ABSTRACT:
An automatic back corona detection and protection system (200) is provided for controlling an electrostatic dust precipitator (80). The system (200) includes a subsystem for monitoring voltage and current parameters of the high voltage transformer/rectifier (70) of the electrostatic dust precipitator system (100). On a periodic basis, automatic back corona detection and protection system (200) tests dust precipitator (80) to determine what operating conditions are conducive to back corona generation, operating parameters being utilized by the energization control (210) during the test, and then operates dust precipitator (80) at voltage and current values below those for which back corona conditions were detected. In detecting back corona, system (200) utilizes two methods of detection (220, 230). The subsequent adjustment of the precipitator operating conditions being made more accurate by a deenergization of the precipitator following detection of back corona to quench the back corona and permit proper adjustment of the precipitating operating parameters. Still further, system (200) provides for optimization of an intermittent operating mode wherein the pulse repetition rate of the voltage supplied to precipitator (80) is optimized to substantially prevent back corona.

REFERENCES:
patent: 4410849 (1983-10-01), Ando
patent: 4626260 (1986-12-01), Jorgensen
patent: 4626261 (1986-12-01), Jorgensen
patent: 4811197 (1989-03-01), Wexler
patent: 4996471 (1991-02-01), Gallo

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