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[1]王颖杰,王文超,左慧芳,等.低开关频率下三相 PWM整流器电流解耦控制研究[J].电机与控制学报,2017,21(01):51-58.[doi:10.15938/j.emc.2017.01.008]
 WANG Ying-jie,WANG Wen-chao,ZUOHui-fang,et al.Current decoupling control strategy for three-phase PWM rectifier at low switching frequency[J].,2017,21(01):51-58.[doi:10.15938/j.emc.2017.01.008]
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低开关频率下三相 PWM整流器电流解耦控制研究(PDF)
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
21
期数:
2017年01
页码:
51-58
栏目:
出版日期:
2017-01-01

文章信息/Info

Title:
Current decoupling control strategy for three-phase PWM rectifier at low switching frequency
作者:
王颖杰王文超 左慧芳齐东迁吴 迪
?(1.中国矿业大学电气与动力工程学院,江苏徐州221008 ;2.电光防爆科技股份有限公司,浙江温州325600; 3.淮海工学院电子工程学院,江苏连云港222005)
Author(s):
WANG Ying-jie12 WANG Wen-chao1 ZUOHui-fang1 QI Dong-qian2 W U D i 3
?(1. School of Electrical and Power Engineering China University of Mining and Technology Xuzhou 221008,China; 2. Dianguang Explosion Protection Technology Co.,Ltd Wenzhou 325600, China; 3. Electronic Engineering School Huaihai Institute of Technology Lianyungang 222005,China)
关键词:

" class="MsoNormal"> 0 0)"> font-size: 8pt"> 传递函数阵' target="_blank" rel="external">">传递函数阵 低开关频率 交叉耦合 PWM整流器

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Keywords:
transfer function matrix low switching frequency cross coupling PWM rectifier
分类号:
TM46
DOI:
10.15938/j.emc.2017.01.008
文献标志码:
A
摘要:
在中高压大功率 PWM整流器中 ,功率器件工作在较低开关频率下 ,这造成了PWM发波 和采样延时增加,使得控制时 dq轴电流分量交叉耦合严重,不利于系统控制。为解决这一问题,基于传递函数阵模型,定义耦合度函数对系统耦合进行分析。分析表明,随着开关频率的降低,系统耦合愈加严重,传统解耦控制已无法适用。结合串联解耦和状态反馈,提出一种新型的解耦控制策略。该策略在不同的开关频率下,均能有效地消除系统的交叉耦合,实现 dq轴电流的独立控制。同时,解耦后系统得到了简化,利于控制器设计,提高系统的控制性能。实验结果验证了理论分析的正确性与所提解耦控制策略的可行性。
Abstract:
The switching frequency of power devices is reduced to improve the capacity of high voltage PWM ( pulse-width modulation,PWM) rectifier. However,this leads to heavy cross coupling between the dq current components,and it is not conducive to system control. In order to overcome this problem,the coupling degree function was established to analyse the coupling degree of the system,which is based on the transfer function matrix model. Analysis shows that with the decrease of the switching frequency ,the coupling of tlie system becomes so serious that tlie traditional decoupling control is not suitable any more. And a novel decoupling control strategy was proposed,which is based on series decoupling and state feedback. Cross coupling of tlie system was eliminated at diferent switching frequencies,and independent control was achieved for tlie dq current components. At tlie same time,the decoupling system was simplified which is beneficial to controller design,and the control performance of the system was improved.Experimental results verify the cooectness of the theoretical analysis and the feasibility of the proposed decou-pling control strategy.

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备注/Memo:
收稿日期:2016-01 -04
基金项目:国家重点研发计划(2016YFC0600906);江苏省高校自然科学基金(15KJD470003);淮海工学院校青年基金(Z2014003)
作者简介:王颖杰(1979—#,男,博士,讲师,研究方向为新能源发电、电网无功及谐波补偿等;
王文超(1991 一),男,硕士,研究方向为新能源发电、电网无功及谐波补偿;
左慧芳(1990—),女,硕士,研究方向为高压直流输电;
齐东迁(1976—),男,学士,工程师,研究方向为防爆电气技术发展;
吴迪(1983—),男,博士,讲师,研究方向为电力电子与电力传动。
更新日期/Last Update: 2017-03-28