Control method and device of variable-frequency power supply

By using high-frequency inverter modules, high-frequency transformer modules and full-bridge circumferential converters in the variable frequency power supply, the problem that variable frequency power supply in the existing technology is difficult to adapt to the needs of different fields, and high-power output and efficient and reliable power control are achieved.

CN119696387APending Publication Date: 2025-03-25STATE GRID JIANGSU ELECTRIC POWER CO LTD RESEARCH INSTITUTE +3
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Patent Information

Application Number
CN202411890996.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-20
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

It is difficult for the existing technology to effectively control the variable frequency power supply to adapt to the needs of different fields, especially in the fields of electric vehicles, industrial automation and other fields.

Method used

The frequency converter power structure is adopted, including a high-frequency inverter module, a high-frequency transformer module, a full-bridge circumferential wave converter and a control module. The control module collects the target voltage input signal, combines the correlation relationship between the high-frequency inverter module and the high-frequency transformer module, outputs the inverter control signal, and combines the type of the circumferential wave converter to analyze the transformer voltage signal output by the high-frequency transformer module, gives the conversion control signal, and completes the control of the variable frequency power supply.

Benefits of technology

It realizes the high-power output of the variable frequency power supply, improves the adaptability of the output power, enables it to meet the needs of different fields, and improves the efficiency and reliability of the system.

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Abstract

The invention discloses a variable-frequency power supply control method and device, the variable-frequency power supply comprises a high-frequency inversion module, a high-frequency transformation module, a cycloconverter and a control module, the high-frequency inversion module, the high-frequency transformation module and the cycloconverter are sequentially connected in series, and the control module is connected with the high-frequency inversion module and the cycloconverter. The control method comprises the following steps executed by the control module: collecting a target voltage input signal; an inversion control signal for controlling the high-frequency inversion module is output on the basis of a target voltage input signal in combination with the incidence relation between the high-frequency inversion module and the high-frequency transformation module; and in combination with the type of the cycloconverter, a transformation voltage signal output by the high-frequency transformation module is analyzed, a transformation control signal for controlling the cycloconverter is given, and control over the variable-frequency power supply is completed. By acquiring and analyzing a target voltage input signal, the high-frequency inverter module and the cycle converter are controlled, and high-power output of the variable-frequency power supply is realized.
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Citation Information

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