一种可提高单相光伏并网逆变器功率密度的新型功率解耦拓扑

茆美琴; 宋振宇; 张榴晨

doi:10.19912/j.0254-0096.tynxb.2020-1153

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太阳能学报 ›› 2022, Vol. 43 ›› Issue (6) : 33-41. DOI: 10.19912/j.0254-0096.tynxb.2020-1153

一种可提高单相光伏并网逆变器功率密度的新型功率解耦拓扑

茆美琴, 宋振宇, 张榴晨

作者信息 +

A NOVEL POWER DECOUPLING TOPOLOGY FOR IMPROVING POWER DENSITY OF SINGLE-PHASE GRID-CONNECTED PV INVERTER

Mao Meiqin, Song Zhenyu, Zhang Liuchen

Author information +

文章历史 +

摘要

滤波电感、电解电容和散热器是逆变器中体积占比最大的元件,为了提高具备功率解耦功能的单相光伏并网逆变器的功率密度,该文从滤波电感的功率处理的数学函数出发,推导可以减小电感体积、解耦电容体积、减小开关器件损耗的控制原理,演绎出一种提高了单相光伏逆变器功率密度的Boost型功率解耦单相逆变器拓扑。搭建额定功率为750 W的Matlab仿真模型和RT-LAB硬件在环仿真实验模型进行验证,与传统逆变器拓扑相比,该拓扑在实现功率解耦功能的基础上,减小了滤波电感的电感量和开关器件的开关损耗,提高了逆变器的功率密度和运行效率。

Abstract

Inductor, electrolytic capacitor and heat sinks are the largest volume components in the inverter. Starting from the mathematical function of the filter inductor’s power processing, this paper deduces the control method which can reduce the volume of inductor, the volume of decoupling capacitor and the loss of switching devices. According to the control method, a new boost type power decoupling single-phase inverter that improves inverter’s power density is derived. A Matlab simulation model and an RT-LAB hardware-in-the-loop simulation model for a system with a rated power of 750 W are built for verifying the method. Comparing with the traditional inverter topology, this topology reduces the inductance of the filter inductor and the switching losses of the devices on the basis of realizing the power decoupling function. The power density and efficiency of the inverter are improved.

导出引用

茆美琴, 宋振宇, 张榴晨. 一种可提高单相光伏并网逆变器功率密度的新型功率解耦拓扑[J]. 太阳能学报. 2022, 43(6): 33-41 https://doi.org/10.19912/j.0254-0096.tynxb.2020-1153

Mao Meiqin, Song Zhenyu, Zhang Liuchen. A NOVEL POWER DECOUPLING TOPOLOGY FOR IMPROVING POWER DENSITY OF SINGLE-PHASE GRID-CONNECTED PV INVERTER[J]. Acta Energiae Solaris Sinica. 2022, 43(6): 33-41 https://doi.org/10.19912/j.0254-0096.tynxb.2020-1153

中图分类号： TM464

参考文献

[1] 曾正, 赵荣祥, 汤胜清, 等. 可再生能源分散接入用先进并网逆变器研究综述[J]. 中国电机工程学报, 2013, 33(24): 1-12, 21.
ZENG Z, ZHAO R X, TANG S Q, et al.An overview on advanced grid-connected inverters used for decentralized renewable energy resources[J]. Proceedings of the CSEE, 2013, 33(24): 1-12, 21.
[2] CHANG A H, LEEB S B.Differential diffusion charge redistribution for photovoltaic cell-level power balancing[C]//2014 International conference on renewable energy research and application (ICRERA), Milwaukee, WI, USA, 2014: 576-582.
[3] XIAO W.Review and simulation of flyback topology for module level parallel inverters in PV power systems[C]//TENCON 2017-2017 IEEE Region 10 Conference, Penang, Malaysia, 2017: 567-572.
[4] STONE A, RASHEDUZZAMAN M, FAJRI P.A review of single-phase single-stage DC/AC boost inverter topologies and their controllers[C]//2018 IEEE Conference on Technologies for Sustainability (SusTech), Long Beach, CA, USA, 2018: 1-8.
[5] 廖志凌, 崔晓晨, 熊颖杰, 等. 非隔离光伏并网逆变器漏电流抑制技术研究综述[J]. 电测与仪表, 2015, 52(22): 100-107, 128.
LIAO Z L, CUI X C, XIONG Y J, et al.A review of leakage current suppression techniques for non-isolated photovoltaic grid-connected inverter[J]. Electrical measurement and instrumentation, 2015, 52(22): 100-107, 128.
[6] 吴学智, 祁静静, 刘京斗, 等. 采用开关电容/开关电感的多电平逆变器拓扑研究综述[J]. 中国电机工程学报, 2020, 40(1): 222-233, 389.
WU X Z, QI J J, LIU J D, et al.Review of multilevel inverter topology research using switched capacitor/switched inductor[J]. Proceedings of the CSEE, 2020, 40(1): 222-233, 389.
[7] WATANABE H, SAKURABA T, FURUKAWA K.Development of DC to single-phase AC voltage source inverter with active power decoupling based on flying capacitor DC/DC converter[J]. IEEE transactions on power electronics, 2018, 33(6): 4992-5004.
[8] ROY J, XIA Y, AYYANAR R.Half-bridge voltage swing inverter with active power decoupling for single-phase PV systems supporting wide power factor range[J]. IEEE transactions on power electronics, 2019, 34(8): 7450-7461.
[9] DESHMUKH N, ANAND S.Active ripple compensation port for single phase transformerless photovoltaic inverter[C]//2018 20th European Conference on Power Electronics and Applications (EPE’18 ECCE Europe), Riga, Latvia, 2018: 1-9.
[10] YE Y, CHEN K W E, LIU J, et al. A step-up switched-capacitor multilevel inverter with self-voltage balancing[J]. IEEE transactions on industrial electronics, 2014, 61(12): 6672-6680.
[11] XU S, CHANG L C, SHAO R.Pulse energy modulation for a single-phase bridge inverter with power decoupling capability[C]// 2019 IEEE Applied Power Electronics Conference and Exposition (APEC), Anaheim, CA, USA, 2019: 305-312.
[12] MOORE E T, WILSON T G.Basic considerations for dc to DC conversion networks[J]. IEEE transactions on magnetics, 1966, 2(3): 620-624.
[13] WOLLAVER D.Fundamental study of DC to DC conversion system[D]. Camloridge: Massachusetts Institute of Technology, 1969.
[14] COBOS J A, CRISTÓBAL H, SERRANO D, et al. Differential power as a metric to optimize power converters and architectures[C]//2017 IEEE energy conversion congress and exposition (ECCE), Cincinnati, OH, USA, 2017: 2168-2175.
[15] 李臻, 于歆杰. 高储能密度电感的设计[J]. 电工技术学报, 2017, 32(13): 125-129.
LI Z, YU X J.Design of inductors with high energy density[J]. Transactions of China Electrotechnical Society, 2017, 32(13): 125-129.
[16] 杨帆, 陈志辉. 电感设计[J]. 电源技术应用, 2007(3): 47-50, 57.
YANG F, CHEN Z H.Design of inductance[J]. Power supply technologies and applications, 2007(3): 47-50, 57.
[17] 李志刚, 梅霜, 王少杰, 姚芳. IGBT模块开关损耗计算方法综述[J]. 电子技术应用, 2016, 42(01): 10-14, 18.
LI Z G, MEI S, WANG S J, et al.The review of IGBT module switching loss calculation method[J]. Application of electronic technique, 2016, 42(01): 10-14, 18.
[18] BIERHOFF M H, FUCHS F W.Semiconductor losses in voltage source and current source IGBT converters based on analytical derivation[C]// IEEE 35th Annual Power Electronics Specialists Conference,(IEEE Cat. No.04CH37551), Aachen, Germany, IEEE, 2004.
[19] 姜卫东, 赵德勇, 汪磊, 等. 一种以降低逆变器开关损耗为目标并考虑中点电位平衡的适用于中点钳位式三电平逆变器的调制方法[J]. 中国电机工程学报, 2016, 36(5): 11.
JANG W D, ZHAO D Y, WANG L, et al.A modulation method with reduced switching losses and considering the neutral point voltage balance suitable for the neutral point clamped three-level inverter[J]. Proceedings of the CSEE, 2016, 36(5): 11.
[20] 胡存刚, 芮涛, 马大俊, 等. 三电平ANPC逆变器中点电压平衡和开关损耗减小的SVM控制策略[J]. 中国电机工程学报, 2016, 36(13): 3598-3608.
HU C G, RUI T, MA D J, et al.A space vector modulation scheme for three-level anpc inverters with neutral-point potential balancing and switching loss reduction[J]. Proceedings of the CSEE, 2016, 36(13): 3598-3608.
[21] 周涛, 陆晓东, 李媛. 功率半导体器件风冷散热器热阻计算[J]. 渤海大学学报(自然科学版), 2011, 32(03): 228-235.
ZHOU T, L X D, LI Y. Calculation of thermal resistance for air-cooling heat sink of power semiconductor parts[J]. Journal of Bohai university(natural science edition), 2011, 32(03): 228-235.
[22] 赵红璐, 朱永元, 张银. 大功率逆变器散热设计[J]. 电气技术, 2018, 19(8): 149-156.
ZHAO H L, ZHU Y Y, ZHANG Y.Thermal design of high-power inverter[J]. Electrical engineering, 2018, 19(8): 149-156.