地网测量仪用数字变频电源设计  

Design of Digital Variable Frequency Power for Grounding Resistance Measurement

作　　者：余为清[1] 

机构地区：[1]华东交通大学载运工具与装备省部共建教育部重点实验室,江西南昌330013

出　　处：《华东交通大学学报》2013年第1期76-79,共4页Journal of East China Jiaotong University

基　　金：国家自然科学基金项目(51175175)

摘　　要：利用SPCE061A单片机的片上资源,根据SPWM原理,以高级语言生成波形数据表格,以查表调用的方式提高了变频电源频率合成的速度和精度。电源具有较高的效率,实测表明该电源波形质量好,适合在地网接地电阻测量中应用。Based on the principle of SPWM,this paper discusses how to improve the rate and precision of frequency synthesis of variable-frequency power supply by utilizing resources on the chip of SPCE061A and generating waveform data form with advanced language and in lookup-calling form.The experimental results show that the power has high efficiency with good power waveform,which is suitable for grounding resistance measurement.

关 键 词：变频 频率合成 正弦脉宽调制 SPCE061A 

分 类 号：TM833[电气工程—高电压与绝缘技术]