庞舰,李琳,张希蔚,丁杰.基于谐振逆变电路的纳米晶材料高频测量系统研究[J].电测与仪表,2022,59(12):150-155. Pang Jian,Li Lin,Zhang Xiwei,Ding Jie.High-frequency Measurement Method of Nanocrystalline Material Based on Resonant Inverter Circuit[J].Electrical Measurement & Instrumentation,2022,59(12):150-155.
基于谐振逆变电路的纳米晶材料高频测量系统研究
High-frequency Measurement Method of Nanocrystalline Material Based on Resonant Inverter Circuit
Aiming at the problem that the high-frequency hysteresis loop and loss measurement of nanocrystalline materials are limited by the bandwidth and rated power of the instrument, a new high-frequency measurement system is designed. The system uses a DC power supply with a push-pull resonant inverter circuit to replace the traditional function signal generator and power amplifier, and adjusts the resonant frequency by adjusting the circuit components to achieve frequency adjustment in the 1 kHz-10 kHz band. Features such as continuously adjustable frequency. Using PSCAD simulation software to study the various functions of the inverter circuit. A measurement system was developed and the hysteresis loop and loss curve of the nanocrystalline magnetic ring at 10 kHz were measured. By comparing the measurement system with the traditional measurement platform for small-capacity model measurement, it is found that the measurement error of the system is 3.3%, which proves that the measurement system developed has high accuracy.
