Filter control method and system for variable-frequency power supply test

• Main Authors: YU WEI, LU LIN, DONG ZHONGXING, YE XIANBIN, CHENG PENG, CHENG YIHONG, LI JING, CHEN YOUFA, TANG TIANPEI, LI HAO, FANG ZHIJIE, SHI GUANGSEN
• Format: Patent
• Language: Chinese; English
• Published: 14.05.2024
• Subjects: BASIC ELECTRONIC CIRCUITRY; CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; ELECTRICITY; IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; RESONATORS; TESTING

The invention belongs to the technical field of filters, and discloses a filter control method and system for variable-frequency power supply testing. The real-time noise power of each node is determined by measuring noise power spectral density distribution under a variable-frequency power supply and crosstalk reactance and parallel admittance of each node in a test circuit; establishing a noise transmission model from a noise source to the output end of the test circuit, and calculating a noise power spectral density threshold value; determining design parameters of a filter according to the noise power spectral density threshold, and determining the type and circuit framework of an initial filter; testing crosstalk reactance and parallel admittance of the initial filter in the test circuit, and determining a parasitic parameter error; according to the parasitic parameter error, optimizing the design parameter of the initial filter to obtain an optimized filter; and testing the anti-interference performance