|本期目录/Table of Contents|

[1]戴鹏,周凯,高爱杰,等.NPC/H 桥五电平逆变器直流侧电容电压平衡控制[J].电机与控制学报,2019,23(03):42-50.[doi:10.15938/j.emc.2019.03.006]
 DAI Peng,ZHOU Kai,GAO Ai-jie,et al.DC-link capacitor voltage balance of NPC/H bridge five-level inverter[J].,2019,23(03):42-50.[doi:10.15938/j.emc.2019.03.006]
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NPC/H 桥五电平逆变器直流侧电容电压平衡控制
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
23
期数:
2019年03
页码:
42-50
栏目:
出版日期:
2019-03-15

文章信息/Info

Title:
DC-link capacitor voltage balance of NPC/H bridge five-level inverter
作者:
 戴鹏 周凯 高爱杰 朱信威
 ( 中国矿业大学电气与动力工程学院,江苏徐州221000)
Author(s):
 DAI Peng ZHOU Kai GAO Ai-jie ZHU Xin-wei
 ( School of Electrical and Power Engineering,China University of Mining and Technology,Xuzhou 221000,China)
关键词:
NPC /H 桥 电容电压平衡 电压预测 SVPWM MPC
Keywords:
NPC /H Bridge balance of capacitor voltage voltage-prediction SVPWM MPC
分类号:
TM 464
DOI:
10.15938/j.emc.2019.03.006
文献标志码:
A
摘要:
 针对三相NPC /H 桥五电平逆变器直流侧电容电压不平衡问题,由逆变器拓扑结构及负载结构建立数学模型,详细分析直流侧电容电压不平衡机理,阐述MPC 与SVPWM 算法相结合的思想。基于模型预测( MPC) ,提出平衡直流侧电容电压的新型电压预测算法,利用SVPWM 算法确定参考电压矢量位置,并选择参与预测的位置矢量和平衡矢量,进而根据代价函数值择优输出。与传统MPC 相比,其具有结构简单,计算量小及每次寻优矢量均不超过10 个等优点。仿真和实验均表明提出的电压预测算法能有效平衡直流侧电容电压并且具有较强的动态响应能力。
Abstract:
 Aiming at the DC-side capacitor voltage imbalance of three-phase five-level NPC /H bridge inverter,mathematical models were established according to the topology of the inverter and the load structure.Unbalanced mechanism of the DC-side capacitor voltages were analyzed in detail. Combination of MPC and SVPWM modulation strategy was described. A novel and simple voltage-prediction algorithm was proposed to balance the DC-side capacitor voltages based on MPC. The SVPWM algorithm was used to determine the reference voltage vector position,and the position vector and balance vector participating in the prediction were selected,and then the optimal vector was selected according to the cost function value. However,compared with the traditional MPC algorithm,the voltage-prediction algorithm has advantages of simple structure、small computation and no more than 7 voltage vectors selected at each time.The simulation and experiment both demonstrate the voltage-prediction proposed has a very good effect on the balance of DC-side capacitor voltages and strong dynamic response capability.

参考文献/References:

相似文献/References:

[1]薛畅,王建赜,纪延超,等. 链式广义有源电力滤波器[J].电机与控制学报,2013,(04):19.
 XUE Chang,WANG Jian-ze,JI Yan-chao,et al.[J].,2013,(03):19.

备注/Memo

备注/Memo:
收稿日期: 2017 - 03 - 06
基金项目: 国家自然科学基金项目( 51707086)
作者简介: 戴鹏( 1973—) ,男,博士,教授,硕士生导师,研究方向为电力电子与电力传动、电机控制与保护;
周凯( 1992—) ,男,硕士,研究方向为电力电子与电力传动;
高爱杰( 1993—) ,男,硕士,研究方向为变流器的设计;
朱信威( 1991—) ,男,硕士,研究方向为电力电子与电力传动。
通信作者: 周凯
更新日期/Last Update: 2019-03-26