A high voltage pulsed power supply with reduced device voltage stress for industrial electrostatic precipitators

Compared with the conventional high voltage DC power supply, the high voltage pulse power supply can significantly improve the dust removal efficiency of electrostatic precipitator and reduce the energy consumption. This paper presents a new type of high voltage pulse electrostatic precipitator power supply topology, the symmetric cascaded structure of the low voltage side which can significantly reduce the voltage stress of switching device, rectifier circuit, clamp circuit and resonant capacitor, thereby significantly reducing the cost. This paper analyzes the steady-state operating principle of the high voltage pulse power supply and the working conditions during flashover while the expressions of the output voltage and current of the transformer primary side are both deduced and verified by simulations. Finally, the experimental verification is carried out by a pulse power supply with a peak voltage of 100kV.

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