One the major challenges in industries has been the environmental pollution. This has been due to insufficient efficiency of dust filtration systems, lack of appropriate legal requirements and lack of sufficient knowledge of environmental issues in the past. Industrial duster systems in the past had a considerable expense that many owners were not able to afford. The main contributors to pollution in industry include steel production; cement kilns, cement mills and pollution from their fuel. With increasing demand for clean environment, development of air cleaning systems has received increasing attention. One of the most advanced methods for filtering the dust pollution is applying electrostatic precipitator (ESP). An important part of each ESP is its high voltage section to absorb the dust pollution. Usually high frequency switching converters are used to create the required high voltage. Several topologies are introduced in the papers for this purpose which is reviewed in this thesis. In order to improve the conventional converters, a new converter is introduced. The proposed converter is composed of a boost converter and high step up LLC resonant converter. As a result, the switch voltage rating is optimal and also soft switching condition is maintained for a wide range of load variations. Furthermore, due to applying the boost stage, the transformer size is reduced. The advantages of the proposed converter are discussed and the validity of the theoretical analysis is justified using simulation and experimental results. Keywords: 1 - Electrostatic filters 2 - Efficiency 3 - High voltage 4 – Boost converter 5 - Resonant converters.
