Optimal Design, of Resonant Converter for Electrostatic Precipitators

摘要

This work presents a design optimizationprocedure for Series Parallel Resonant Converters (LCC)employed in Electrostatic Precipitator (ESP) powersupplies. The system parameters, such as resonant tankelements, are selected in order to reduce semiconductorlosses when a typical ESP energization operation range isconsidered. Here, the sum of the power losses of the switchesare predicted for a set of parameters by mathematicalmodels of the LCC resonant converter, and also by losscharacteristics of suitable commercially available IGBTsobtained from experimental analysis and datasheet values.The analysis comprises two different control strategies: theconventional Variable Frequency (VF) control and the DualControl (DC). Finally, the circuit operation and design areverified with a 60kW charging capability LCC resonantconverter test set-up. Both control strategies are analyzedby comparing semiconductor's losses for five commercialmodules.