Key Issues and Improvement of High Power AC Current Source

doi:10.11985/2020.03.011

Abstract

Abstract:

Aiming at the characteristics of high power capacity and small waveform distortion in AC resistance testing of large cross-section conductor, an AC current supply based on PA52 power amplifier is proposed. According to the working principle of the improved Howland current pump and bridge circuit driving technology, the main circuit of power supply is designed, which is composed of voltage control current source and coupling transformer. The protection and compensation circuits are designed according to the characteristics of inductive load. The output capacity of AC current source is improved by means of parallel power amplifier and coupling transformer, and the coupling transformer is designed. Combined with the theoretical analysis and performance measurement, the feasibility of key technologies such as noise gain compensation, power amplifier parallel current expansion and coupling transformer rising current are verified.

Key words: AC current source, power amplifier, coupling transformer, frequency characteristics

CLC Number:

TM561

LING Jian,ZHENG Huan,WAN Qijun,ZHAO Zhe,PENG Cheng. Key Issues and Improvement of High Power AC Current Source[J]. Journal of Electrical Engineering, 2020, 15(3): 78-87.

Figures/Tables 20

References 23

[1]	潘文林. 电缆大截面导体交流电阻测试方法综述[J]. 电气技术, 2017(12):19-23.
	PAN Wenlin. The summary of measurement on power cables conductor AC resistance with large section area[J]. Electrical Engineering, 2017(12):19-23.
[2]	邓显波, 欧阳本红, 孔祥海, 等. 大截面高压电缆导体交流电阻的优化[J]. 高电压技术, 2016,42(2):522-527.
	DENG Xianbo, OUYANG Benhong, KONG Xianghai, et al. Optimization of AC resistance of large cross-section high-voltage cable conductor[J]. High Voltage Engineering, 2016,42(2):522-527.
[3]	中华人民共和国国家质量监督检验检疫总局, 中国国家标准化管理委员会. 电线电缆电性能测试方法：第4部分导体直流电阻试验：GB/T 3048.4—2007[S]. 北京: 中国标准出版社, 2007.
	General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China,Standardization Administration of the People’s Republic of China. Test methods for electrical properties of electric cables and wires-Part 4：Test of DC resitance of conductors GB/T 3048.4—2007[S]. Beijing: Standards Press of China, 2007.
[4]	韩伯锋. 电力电缆试验及检测技术[M]. 北京: 中国电力出版社, 2007.
	HAN Bofeng. Power cable test and detection technology[M]. Beijing: China Electric Power Press, 2007.
[5]	孙伟, 吴黎明. 电线电缆直流电阻检测技术的改进[J]. 电工技术, 2019(13):108-109.
	SUN Wei, WU Liming. Improvement of DC resistance detection technology for wires and cables[J]. Electric Engineering, 2019(13):108-109.
[6]	黄晋. 测量不确定度在大截面铝导体电缆直流电阻检测中的应用[J]. 电子测试, 2013(3):5-6.
	HUANG Jin. Measurement uncertainty in the detection of large cross-section aluminum conductor cable DC resistance[J]. Electronic Test, 2013(3):5-6.
[7]	夏俊峰, 施楠楠, 徐晓峰, 等. 绞合导体交流电阻特性及高精度测量系统应用[J]. 电线电缆, 2018(4):1-5.
	XIA Junfeng, SHI Nannan, XU Xiaofeng, et al. Study on AC resistance characteristics of stranded conductors by a high precision measuring system[J]. Electric Wire and Cable, 2018(4):1-5.
[8]	GEROSCHRÖDER, KAUMANNS J. Advanced measurement of AC resistance on skin-effect reduced large conductor power cables[C]// 8th International Conference on Insulated Power Cables (Jicable’11),June 19-23,2011,Paris,Versailles,France, 2011: A8-2.
[9]	SANTANA J, FUSTIER A. A new method for the measurement of power cable AC resistance[C]// 5th International Conference on Insulated Power Cables (Jicable'99),June 20-24,1999,Paris,Versailles,France, 1999: B8-1.
[10]	KART-ERIK R, MATS S. A measuring system of conductor AC and DC resistance[C]// 8th International Conference on Insulated Power Cables (Jicable’11),June 19-23,2011,Paris,Versailles,France, 2011: A8-1.
[11]	潘子君. 基于功率运算放大器的电压控制交流大电流源的研究[D]. 哈尔滨:哈尔滨理工大学, 2018.
	PAN Zijun. The research of large AC voltage-controlled current source based on power operational amplifiers[D]. Harbin:Harbin University of Science and Technology, 2018.
[12]	田社平, 于歆杰. 关于Howland 电流泵电路的分析与讨论[J]. 电气电子教学学报, 2016,38(1):43-45.
	TIAN Sheping, YU Xinjie. On analysis and discussion of Howland current pump circuit[J]. Journal of Electrical and Electronic Engineering Education, 2016,38(1):43-45.
[13]	班连庚, 孙岗, 项祖涛, 等. 特高压苏通综合管廊工程GIL系统工作条件[J]. 电网技术, 2020,44(6):2386-2393.
	BAN Liangeng, SUN Gang, XIANG Zutao, et al. Research on system conditions of UHV GIL in Sutong utility tunnel project[J]. Power System Technology, 2020,44(6):2386-2393.
[14]	BOYLESTAD R L, NASHELSKY L. Electronic devices and circuit theory[M]. Beijing:Publishing House of Electronics Industry, 2001.
[15]	WALT J. Op amp application handbook[M]. Beijing: Post & Telecom Press, 2009.
[16]	王纪学. 功率运算放大器在压控电流源中的应用[J]. 国外电子元器件, 1998(9):19-21.
	WANG Jixue. Application of power operational amplifier in voltage controlled current source[J]. Foreign Electronic Components, 1998(9):19-21.
[17]	梁剑波, 刘加树, 张世莉. 恒流功率放大器及其应用[J]. 微电子学, 2004,34(2):135-137.
	LIANG Jianbo, LIU Jiashu, ZHANG Shili. Constant-current power amplifier and its applications[J] Microelectronics, 2004,34(2):135-137.
[18]	秦玲. 基于功率运算放大器的恒流源技术研究[D]. 绵阳:中国工程物理研究院, 2007.
	QIN Ling. Research on constant current source technology based on power operational amplifier[D]. Mianyang:China Academy of Engineering Physics, 2007.
[19]	汤蕴璆. 电机学[M]. 北京: 机械工业出版社, 2014.
	TANG Yunqiu. Electric machinery[M]. Beijing: China Machine Press, 2014.
[20]	李程, 徐天齐, 李琰. 恒、变磁通共铁心的自耦变压器的研制[J]. 电气工程学报, 2018,13(3):34-41.
	LI Cheng, XU Tianqi, LI Yan. A novel design of auto-transformer with common core for constant flux and variable flux[J]. Journal of Electrical Engineering, 2018,13(3):34-41.
[21]	Apex Microtechnology. General operating considerations [EB/OL]. [2012-10-01]. https://www.apexanalog.com/resources/appnotes/an01u.pdf.
[22]	姚鹏, 刘岩, 张胜修, 等. 针对容性压电负载的桥式功率放大电路的设计[J]. 压电与声光, 2011,33(2):235-238.
	YAO Peng, LIU Yan, ZHANG Shengxiu, et al. Design of a bridge connected power operational amplifiers circuit for capacitive piezoelectric loads[J]. Piezoelectrics and Acoustooptics, 2011,33(2):235-238.
[23]	卡罗尼尔・麦克莱曼. 变压器与电感器设计手册[M]. 北京: 中国电力出版社, 2014.
	MCLYMAN C W T. Transformer and inductor design handbook[M]. Beijing: China Electric Power Press, 2014.

参数	频率/Hz
参数	30	50	100	150	300
失真度THD(%)	0.461	0.516	0.484	0.499	0.389

参数	频率/Hz
参数	30	50	100	150	300
激磁电阻R_m/Ω	0.70	1.30	2.88	4.45	8.54
激磁电抗X_m/Ω	2.30	3.64	6.42	8.59	13.08
变压器激磁阻抗Z_m/Ω	2.41	3.87	7.03	9.67	15.62

参数	频率/Hz
参数	30	50	100	150	300
失真度THD (%)	0.387	0.388	0.349	0.304	0.352