现代电子技术2024，Vol.47Issue(23)：159-163,5.DOI:10.16652/j.issn.1004-373x.2024.23.024
变负载条件下超声电源有功功率的整定与测量
Setting and measurement of active power of ultrasonic power supply under variable load conditions
摘要
Abstract
A power measurement method is proposed to improve the active power measurement accuracy and get rid of the high-order harmonic interference of ultrasonic power supply under variable load conditions.In this method,the capacitive voltage divider and current transformer are used to collect the voltage and current signals at both ends of the transducer in the ultrasonic system.After these signals are converted into digital signals by the A/D chip,a band-pass filter is designed to filter out high-order harmonics.The DC component containing the phase difference is obtained by the digital phase detector(DPD),and the effective values of the voltage and current signals under variable load conditions are obtained by combining the improved effective value calculation method,and the active power is calculated.So far,the high-precision measurement of the power parameters of the ultrasonic system driving the transducer under variable load conditions is realized.Finally,the feasibility and correctness of the measurement scheme are verified by simulations and experiments.关键词
变负载/超声换能器/超声电源/有效值计算/高精度测量/数字鉴相器/功率计算Key words
variable load/ultrasonic transducer/ultrasonic power supply/valid value calculation/high-precision measurement/DPD/power calculation分类
信息技术与安全科学引用本文复制引用
刘宁庄,蒋豪,田海波,刘冠雄,赵乾..变负载条件下超声电源有功功率的整定与测量[J].现代电子技术,2024,47(23):159-163,5.基金项目
国家自然科学基金项目(52174149) （52174149）
陕西省重点研发计划(2022GY-241) （2022GY-241）
