基于SPWM调制的交流恒流源系统设计  

Design of AC constant current source system based on SPWM modulation

作　　者：赵琛 张益[1] 裴方晟 陶泽勇[1] ZHAO Chen;ZHANG Yi;PEI Fang-sheng;TAO Ze-yong(State Nuclear Power Plant Service Company, Shanghai 200233, Chin)

机构地区：[1]国核电站运行服务技术有限公司,上海200233

出　　处：《电子设计工程》2018年第11期165-169,共5页Electronic Design Engineering

摘　　要：为了进行低压电器中低压成套开关设备和控制设备的型式试验,提高检测效率和提升检测平台,提出一种基于单极性SPWM调制方式的低压电器产品检测交流恒流源装置。控制部分采用NXP公司推出的基于ARM Cortex-M3内核的LPC1768微控制器实现SPWM波形的数字化生成算法,有效降低谐波失真,另外采用了模糊PID控制方法,使得交流恒流源的输出稳定性及精确性得到了进一步的提升,并进行现场试验数据的采集、处理,通过网络通讯对检测数据实时传输。实践表明,本设计具有速度快、精度高、实用性强等特点。To do Low-voltage electrical appliances Low-voltage switchgear and controlgear experiments,improve the detection efficiency and enhance detection platform,we propose a AC current source devicesfor low-voltage electrical products detect based on unipolar SPWM modulation. The control unit adopts the NXP compangy＇s ARM Cortex-M3 core LPC1768 Microcontroller to achieve the SPWM waveform digitization generation algorithm,which can effectively reduce the harmonic distortion. In addition,the design are uses fuzzy-PID control method to improve the stability and accuracy of the AC current source circuit,And keeping the field test data collection, processing,through network communications to detect real-time data transmission. Practice shows that this design has the characteristics of high speed,high precision and strong practicability.

关 键 词：低压电器 交流恒流源 单极性SPWM 模糊PID 

分 类 号：TN86[电子电信—信息与通信工程]