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Research on high frequency and high voltage resonant power converter for electrostatic precipitator

2013-09-20
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This paper introduces a high-frequency and high-voltage resonant power converter for electrostatic dust removal. The parasitic parameters of the high-frequency step-up transformer are used as resonant elements to form a series-parallel resonant link with an external resonant capacitor. In order to achieve zero-current turn-on and zero-current/zero-voltage turn-off of the power switch tube, the circuit operates in a discontinuous resonant current mode. Based on the analysis of the critical working state of the circuit, this paper derives the relationship between the critical load resistance; when the output load is greater than or less than the critical load resistance, the circuit\'s working mode sequence and the time of the forward and reverse resonance process are different, which provides a theoretical basis for the design of the system. Finally, this paper designs an experimental prototype for experimental verification and gives the experimental results.

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