吴学智;赵亚雪;刘京斗;刘锋;王杰;赵志刚;张雪芬;

• 1:国家能源主动配电网技术研发中心(北京交通大学)
• 2:维谛技术有限公司
• 3:空调设备及系统运行节能国家重点实验室
• 4:珠海格力电器股份有限公司

摘要(Abstract)：

针对传统多电平逆变器输出电平不易扩展的问题,结合开关电容能输出二倍电容电压的特点,提出一种含开关电容的有源箝位多电平拓扑。该拓扑能明显增加输出电平数,由开关电容带来的冗余状态也有利于电容电压均衡,且所含电容少逆变器体积小,适用于低压高功率密度的场合。分析了新拓扑中基本单元分别为开关电容单元和飞跨电容单元的情况,从电容容值和成本角度出发,得出了含开关电容的有源箝位型多电平拓扑构成原则。在此基础上从开关管数量、电容数量和冗余开关状态数量3个方面对比了新拓扑与普通有源中点箝位型拓扑的特性,最后以九电平组合拓扑为例,分析其工作原理、调制策略及电容电压控制策略。仿真和实验结果验证了其可行性。

关键词(KeyWords)： 开关电容;有源箝位;多电平;电平数扩展;冗余开关状态

Abstract:

Keywords:

基金项目(Foundation): 空调设备及系统运行节能国家重点实验室开放基金项目(ACSKL2018KT09);; 高等学校学科创新引智计划(B14005)~~

作者(Author): 吴学智;赵亚雪;刘京斗;刘锋;王杰;赵志刚;张雪芬;

Email:

DOI: 10.13335/j.1000-3673.pst.2019.0910

参考文献(References)：

• [1] Chattopadhyay S K,Chakraborty C.A new asymmetric multilevel inverter topology suitable for solar PV applications with varying irradiance[J].IEEE Transactions on Sustainable Energy,2017,8(4):1496-1506.
• [2] Jinn-Chang W,Chia-We C.A solar power generation system with a seven-level inverter[J].IEEE Transaction on Power Electronics,2014,29(7):3454-3462.
• [3] Rivera S,Kouro S,Wu B,et al.Multilevel direct power control-a generalized approach for grid-tied multilevel converter applications[J].IEEE Transaction on Power Electronics,2014,29(10):5529-5604.
• [4] Nabae A,Takahashi I,Akagi H.A new neutral-point clamped PWM inverter[J].IEEE Transactions on Industry Applications,1981,IA-17(5):518-523.
• [5] Dargahi V,Khoshkbar Sadigh A,Abarzadeh M,et al.A new family of modular multilevel converter based on modified flying-capacitor multicell converters[J].IEEE Transaction on Power Electronics,2015,30(1):138-147.
• [6] Aleenejad M,Iman-Eini H,Farhangi S.Modified space vector modulation for fault-tolerant operation of multilevel cascaded H-bridge inverters[J].IET Power Electronics,2013,6(4):742-751.
• [7] Dargahi S,Sabahi M,Eskandari S,et al.Flying-capacitor stacked multicell multilevel voltage source inverters:analysis and modelling[J].IEEE Transaction on Power Electronics,2014,7(12):2969-2987.
• [8]王奎，郑泽东，李永东．基于零序电压注入的五电平有源中点钳位型逆变器多目标优化控制策[J]．电工技术学报，2014,29(6):129-135.Wang Kui,Zheng Zedong,Li Yongdong.Multi-purpose optimal control strategy of a five-level active neutral-point clamped inverter based on zero-sequence voltage injection[J].Transactions of China Electrotechnical Society,2014,29(6):129-135(in Chinese).
• [9] Liu J,Cheng K W E,Ye Y.A cascaded multilevel inverter based on switched-capacitor for high-frequency AC power distribution system[J].IEEE Transaction on Power Electronics,2014,29(8):4219-4230.
• [10] Ghias A M Y M,Pou J,Agelidis V G.An active voltage-balancing method based on phase-shifted PWM for stacked multicell converters[J].IEEE Transactions on Power Electronics,2016,31(3):1921-1930.
• [11] Banaei M R,Kazemi F M,Oskuee M R J.New mixture of hybrid stacked multicell with half-cascaded converter to increase voltage levels[J].IET Power Electronics,2013,6(7):1406-1414.
• [12]王帅，荆龙，吴学智，等．基于直流环流注入的MMC储能系统相间功率均衡控制策略[J]．电网技术，2017,41(9):2862-2869.Wang Shuai,Jing Long,Wu Xuezhi,et al.Interphase power equalization control strategy for MMC energy storage system based on DC circulating current injection[J].Power System Technology,2017,41(9):2862-2869(in Chinese).
• [13] Konstantinou G,Pulikanti S,Ciobotaru M,et al.The seven-level flying capacitor based ANPC converter for grid intergration of utility-scale PV systems[C]//Proceedings of the 2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems(PEDG).Aalborg:IEEE,2012:592-597.
• [14]刘战，谭国俊，李浩，等．基于空间电压矢量的有源中点箝位型五电平逆变器母线中点电压平衡问题的研究[J]．中国电机工程学报，2015,35(24):6499-6507.Liu Zhan,Tan Guojun,Li Hao,et al.Research on neutral point potential balancing problems of active neutral-point clamped fivelevel inverter based on space vector pulse width modulation[J].Proceedings of the CSEE,2015,35(24):6499-6507(in Chinese).
• [15] Dargahi V,Corzine K A,Enslin J H,et al.Duo-active-neutral-pointclamped multilevel converter:an exploration of the fundamental topology and experimental verification[C]//2018 IEEE Applied Power Electronics Conference and Exposition(APEC).San Antonio,TX:IEEE,2018:2642-2649.
• [16] Liu J,Cheng K W E,Ye Y.A cascaded multilevel inverter based on switched-capacitor for high-frequency ac power distribution system[J].IEEE Transactions on Power Electronics,2014,22(8):4219-4230.
• [17] Ye Y,Cheng K,Liu J,et al.A step-up switched-capacitor multilevel inverter with self voltage balancing[J].IEEE Transactions on Industry Electronics,2014,61(12):6672-6680.
• [18] Babaei E,Gowgani S S.Hybrid multilevel inverter using switched capacitor units[J].IEEE Transactions on Industry Electronics,2014,61(9):4614-4621.
• [19] Barzegarkhoo R,Kojabadi H M,Zamiry E,et al.Generalized structure for a single phase switched-capacitor multilevel inverter using a new multiple DC link producer with reduced number of switches[J].IEEE Transactions on Power Electronics,2016,31(8):5604-5617.