Company News
Kewell obtained invention patent authorization：A Superconducting Magnet Power Supply Circuit
Article Source：Kinri Energy | Author：Kinri Energy | Issuing Time：2024.03.16
According to data from Qichacha, Kewell (688551) has obtained a new invention patent authorization, titled "A Superconducting Magnet Power Supply Circuit", with patent application number CN201811185315.2, and the authorization date is March 12, 2024.
Patent abstract
The present invention provides a superconducting magnet power supply circuit, comprising an AC/DC rectification circuit for converting AC to DC, and a DC/DC circuit series connected to the output end of the AC/DC rectification circuit for adjusting DC power. The DC/DC circuit comprises a first power unit IG1, a second power unit IG2, a diode D1, a current sensor CS1, a filtering inductor L1, a filtering capacitor C1, and a normally closed contactor Q1, The collector of the first power unit IG1 serves as the positive input terminal of the DC/DC circuit and is connected to the negative terminal of diode D1, which can effectively control the charging and discharging of the superconducting magnet. At the same time, energy feedback grid method is adopted for the discharging and quenching of the superconducting magnet, which can save electricity. In case of system power failure, no additional protective devices need to be added, and the circuit's own power devices and diode freewheeling are used to release energy, By saving additional costs and space placement, it can effectively improve the protection of superconducting magnets and reduce damage to circuits and superconducting magnets.
Since the beginning of this year, Kewell has obtained 15 new patent authorizations, an increase of 36.36% compared to the same period last year. Based on the company's mid year financial data for 2023, the company invested 39.1914 million yuan in research and development in the first half of 2023, a year-on-year increase of 13.64%.
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