Transformer distribution parameter based LCC resonant type electrostatic precipitator high-frequency high-voltage power supply

Abstract

The invention discloses a transformer distribution parameter based LCC resonant type electrostatic precipitator high-frequency high-voltage power supply. The power supply comprises a three-phase rectifier bridge, an input filter capacitor, a full-bridge inversion circuit, an LCC serial-parallel resonant circuit, a high-frequency boosting transformer and a high-voltage silicon stack rectifier bridge which are connected in sequence; the three-phase rectifier bridge is electrically connected with three-phase alternating current; and the high-voltage silicon stack rectifier bridge is connected with a load. According to the power supply, the influence on a circuit from the high-frequency transformer distribution parameters is taken into full consideration; the LCC serial-parallel resonant circuit is designed by a fundamental wave analyzing method; the switch-on and switch-off of the zero voltage and zero current of a switch tube can be realized, so that the power switching tube is protected, the EMI noise is lowered, the switch loss is reduced, the switch frequency is improved, and the size of the power supply is reduced; meanwhile, the system is subjected to intermittent power supply control, so that sparks and back corona are effectively prevented; and in addition, the power supply is low in switch loss, relatively smaller in size, low in electromagnetic interference, and high in transmission efficiency.

Description

Technical field: [0001] The invention relates to an LCC resonant electrostatic dust removal high-frequency and high-voltage power supply based on transformer distribution parameters. Background technique: [0002] Electrostatic precipitator (ESP) is to use the principle of electrostatic adsorption dust to remove dust. It has high dust removal efficiency, wide range of dust particles, stable operation and high reliability. It has become an advanced dust removal method widely used in industrial production. But how to improve the output efficiency of the power supply is still the focus of power supply design. [0003] The high-frequency transformer has a lot of turns on the secondary side, and the turn ratio of the secondary side to the primary side is very large, so it presents large parasitic parameters, such as leakage inductance and winding capacitance, which will generate peak voltage and interference in the circuit and be easily damaged Power devices have a great influen...

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Problems solved by technology

[0003] The high-frequency transformer has a lot of turns on the secondary side, and the turn ratio of the secondary side to the primary side is very large, so it presents large parasitic parameters, such as leakage inductance and winding capacitance, which will generate peak voltage and interference in the circuit and be easily damaged Power devices, which have a great influence on the performance of the power system

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