Vacuum cleaners generally use high-voltage DC power supply
Vacuum cleaner Why use high voltage DC power supply? Let's first understand the principle of high voltage DC power supply in dust collector.
The pulse width superimposed on the basic DC high voltage is 100 μ S or smaller narrow pulse voltage waveform, a sharp rising pulse voltage is applied to the electric field electrode to make the corona distribution uniform, and a strong corona discharge corona line is generated on the corona electrode. Greatly improve the internal damage voltage of the electric field and make the dust charged more. At the same time, by changing the pulse repetition frequency without increasing or reducing the peak voltage, the corona current can be adjusted to realize dust collection with low current density.
1. Main technical standards: dust emission concentration and operation energy consumption can be reduced by more than 30% respectively.
2. Technical features: improve the charging efficiency of dust (especially fine dust), greatly improve the dust removal efficiency and reduce the operation energy consumption. After the conversion, the outlet particle concentration is 16.91mg/m3, the pulse power supply can reduce particle emission by more than 30%, and the operation energy consumption of high-voltage power supply can be reduced by 30% - 70%.
According to the technical route of superimposing pulse high voltage on basic DC high voltage, it is planned to divide pulse high voltage power supply into basic DC high voltage unit and pulse high voltage unit. The two units are designed with separate structures. Among them, the basic DC high-voltage unit adopts the original power frequency three-phase high-voltage unit, increases the high-voltage disconnector cabinet, and increases the high-voltage disconnector cabinet with two in and one out of basic DC high-voltage and pulse high-voltage. The pulse high-voltage unit corresponds to the series LC resonant circuit.
3. Main technical operation and control parameters: input power supply three-phase AC 380V / 50Hz, rated output basic DC voltage 72kV, rated output basic DC current 1600ma, rated load capacity 115nf, rated output pulse peak voltage 80kV, pulse width 85 μ S. The pulse repetition rate ranges from 1PPS to 120pps.
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