Design, Simulation and Prototype Construction of a Pulsed Power Source for Use in Electrostatic Precipitators

Among the common structures of filters, electrostatic filters have been very important in the indu­stry due to their various advantages. Pollutant separation in these filters happens by charging them and absorbing them in the electric field. Using a high-amplitude dc voltage to create a strong field and as a result discharging the corona and charging the pollutant particles are the basis of this sys­tem. However, the use of pulsed voltages with high amplitude can bring better efficiency and lower energy consumption. For this reason, in this article, a pulsed voltage source for starting an ele­ctrostatic filter is investigated. The existing pulse structures have been investigated and by combining two of them, a new structure including the energy storage capacitor network and a magnetic switch to produce the required pulse has been presented. In this structure, a saturable inductor plays the role of a switch, which can overcome the voltage limitations of semiconductor switches and cover any voltage level. The proposed structure is analyzed and simulated for a specific example.

Keywords:

pulse power , saturable inductors , magnetic switches , pulse magnetic compressor , electrostatic filters