Medium-high frequency power supply apparatus and ozone generator

Abstract

The invention provides a medium-high frequency power supply apparatus and an ozone generator. The medium-high frequency power supply apparatus comprises an alternating current input module, a phase shifting transformer and a power unit module, wherein the alternating current input module is used for leading in an alternating current; the primary side of the phase shifting transformer is electrically connected with the alternating current input module, and the secondary side of the phase shifting transformer has multiple output units; the power unit module comprises multiple power units, wherein the power units are used for converting the alternating current input into the power units into a direct current firstly and then reversing the direct current into a single-phase alternating currentwith preset voltage, current and frequency; each power unit is connected with one corresponding output unit on the secondary side separately; and the single-phase alternating current output ends of the respective power units are connected in series in an overlaid manner in sequence, so that the output voltage and frequency of the power unit module are equal to the sum of the output voltage and frequency of each power unit. By virtue of the medium-high frequency power supply apparatus and the ozone generator provided by the invention, harmonic pollution to a power grid can be prevented, and power factor is also improved.

Description

technical field [0001] The invention relates to the field of power supply technology, in particular to a medium-high frequency power supply device and an ozone generator. Background technique [0002] The medium and high frequency power supply is a static frequency conversion device that converts three-phase power frequency power or other alternating current into single-phase power. It has strong adaptability to various loads and a wide range of applications. It is mainly used in ozone generators and various metal melting, heat preservation, sintering, welding, quenching, tempering, diathermy, metal heat treatment, bending pipes, and crystal growth. middle. [0003] For example, if figure 1 As shown, this type of power supply includes grid AC input 1, rectification and filtering circuit 2, full-bridge inverter circuit 3, full-frequency transformer 4, and finally connects to the ozone discharge chamber 5, and controls and protects the rectification and filtering circuit 2, ...

AI Technical Summary

Problems solved by technology

[0005] 1: The input power factor is low, a large amount of reactive power causes additional energy consumption on the cable, and at the same time brings high-order harmonic pollution to the power grid, which does not meet today's energy requirements such as clean energy;

[0006] 2: The step-up transformer limits the output frequency, which can only be 3kHz. Considering the cost of the transformer, it works below 1kHz in most cases

[0007] 3: The maintenance is too complicated, and the production line must be stopped after the fault is resolved before continuing to work, which affects efficiency

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