Comprehensive control method for high-power efficient energy consuming high-frequency switching power supply

Abstract

The invention discloses a comprehensive control method for a high-power efficient energy consuming high-frequency switching power supply. The high-power efficient energy consuming high-frequency switching power supply comprises a three-phase current inverter and a high-frequency DC / DC (Direct Current to Direct Current) converter, wherein the high-frequency DC / DC converter consists of a single-phase full-bridge inverter, a high-frequency coupling transformer and a low-voltage rectifier which are connected in series in sequence; the input end of the three-phase current inverter is connected with a group of three-phase capacitors connected in a Y form, and is connected with a power grid through a three-phase inductor L; and the three-phase current inverter is connected with the single-phase full-bridge inverter of the high-frequency DC / DC converter. According to the method, quick response of a system is realized, change of a load is tracked quickly, efficient power consumption of the system is realized, and the voltage and current distortion factors of the system are decreased.

Description

technical field [0001] The invention relates to a control method for a switching power supply, in particular to a comprehensive control method for a high-power, high-energy-efficiency high-frequency switching power supply. Background technique [0002] In the application of power electronics technology and various power supply systems, switching power supply technology is at the core. In the electric vehicle, frequency conversion drive and electrolytic plating industry, switching power supply technology is even more inseparable. Through switching power supply, the frequency of power consumption can be changed, so as to achieve near-ideal load matching and drive control. Traditional thyristor or diode rectifier circuits are very bulky and heavy. If Gordon switching power supply technology is used, its volume and weight will be greatly reduced, and it can greatly improve power utilization efficiency, save materials, reduce costs, and achieve high-efficiency power consumption a...

AI Technical Summary

Problems solved by technology

Traditional thyristor or diode rectifier circuits are very bulky and heavy. If Gordon switching power supply technology is adopted, its volume and weight will be greatly reduced, and it can greatly improve power utilization efficiency, save materials, reduce costs, and achieve high-efficiency power consumption and Combination of high-quality electricity

[0003] For large-scale electrolytic electroplating power supplies, the traditional electroplating electrolytic DC power supply adopts the thyristor phase-controlled rectification mode, so when the conduction angle of the thyristor is small, the power factor is low, and the harmonic content is large, which directly leads to an increase in the loss of power transformers, connecting wires, switches, etc. , general large-capacity silicon controlled rectifiers also need to add additional harmonic control and power factor compensation devices, which greatly increases the total investment cost of users

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