Patent · US Expired

Electrostatic precipitator power supply

US4808200A · kind A · utility

69Cited by

11References

19Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Richard Dallhammer · Nuremberg, DE
Franz Neulinger · Langen (Hessen), DE
Walter Schmidt · Bellikon, CH
Helmut Schummer · Heusenstamm, DE

Key dates

Filing date	Nov 12, 1987
Grant date	Feb 28, 1989
Priority date	—
Expiry date	Nov 12, 2007

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S323/903
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

An electrostatic precipitator is supplied with a d-c voltage of variable level upon which is superimposed a series of voltage pulses. For each voltage pulse, the difference between a positive current-time area and a negative current-time area beneath a current-voltage curve is determined and maximized by changing the pulse amplitude, pulse width, pulse repetition frequency and/or the rate of pulse rise. In addition, the d-c voltage is controlled to have a value at a point of maximum slope of the function of precipitator current with respect to the magnitude of the d-c voltage.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.