基于DDS的现场校验仪变频功率源研究  

The research of on-site verification inverter power source based on DDS technology

作　　者：高敬更[1] 陈欣[1] 杨熹[1] 杜辉[1] 张勇红[2] 杨春光[1] 李鹏[1] 

机构地区：[1]国网甘肃省电力公司电力科学研究院,兰州730050 [2]国网甘肃省电力公司,兰州730030

出　　处：《工业仪表与自动化装置》2017年第1期42-44,50,共4页Industrial Instrumentation & Automation

基　　金：国网甘肃省电力公司科技项目(52272214003J)

摘　　要：为满足互感器现场检定系统的需要,设计并实现了一种程控变频功率源,该功率源以FPGA芯片为核心,采用直接频率合成技术(DDS)产生频率可调的正弦波信号,其输出频率范围为1~200 Hz,精度优于0.05 Hz;功率放大电路部分采用甲乙类双电源互补对称功率放大电路,实现较大的输出容量和高的线性度。To meet the requirements of transformer on-site verification system,a kind of programble inverter power source is designed and implemented.FPGA chip is used for the power source,and the adjustable frequency sine wave signal is produced by direct digital frequency synthesis technology（DDS）.The output frequency range is 1 ~ 200 Hz,and the precision is better than 0.05 Hz.Double power supply complementary symmetry power amplifier circuit is used for power amplifier circuit part,and the larger output capacity and high linearity shall be realized.

关 键 词：DDS FPGA 互补对称功放 

分 类 号：TM935[电气工程—电力电子与电力传动]