不隔离单相光伏并网逆变器系统输入电流低频纹波抑制

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摘要单相光伏并网逆变器系统网侧功率时变特性导致前级直直变换器输入电流中含较大（两倍电网频率）低频纹波,影响其对光伏面板最大功率跟踪效果。本文基于反向电流增益A_i(s)（输入电流对输出电流）模型,提出一种新的方法,用于分析单相不隔离光伏并网逆变器系统中前级Boost直直变换器低频纹波特性。本文建立并推导了不同控制方式下的Boost变换器的A_i(s)模型,并在Saber软件中得到验证。指出并验证了平均电流控制方式相比电压控制方式及开环控制方式,在输入电流低频纹波抑制方面更有效,并给出相关的设计准则。仿真及实验表明了该模型的正确性及可行性。

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	嵇保健
	王建华
	赵剑锋

关键词 ：光伏, 输入电流低频纹波, 反向电流增益, 平均电流控制

Abstract：Due to power time-varying characteristic of a single phase photovoltaic (PV) grid-connected inverter in grid side,its front-end DC-DC converter tends to draw a large AC ripple current with double grid frequency,which may decrease maxim power point tracking effect of PV side. A novel method is proposed for the low frequency input current ripple analysis of a boost converter in a non-isolated single phase PV inverter,based on back current gain A_i(s) (input current to output current) model. Mathematical models with different control schemes are built and derived,which are verified in Saber environment. It is indicated and proved that average current mode control strategy is more effective than voltage mode control and open loop control methods. Design principles are also presented. Simulation and experimental results are provided for model verification.

Key words： Photovoltaic input current low frequency ripple back current gain average current mode control

出版日期: 2013-12-11

PACS:

TM464

基金资助:国家自然科学基金（51207023）,江苏省高校自然科学基金（12KJB40009）,江苏省产学研前瞻性项目(BY2011156)和江苏省科技支撑计划(BE2011174)资助项目。收稿日期 2011-11-10 改稿日期 2012-04-24

引用本文:

嵇保健，王建华，赵剑锋. 不隔离单相光伏并网逆变器系统输入电流低频纹波抑制[J]. 电工技术学报, 2013, 28(7): 139-146. Ji Baojian,Wang Jianhua,Zhao Jianfeng. Reduction of Low Frequency Input Current Ripple in a Non-Isolated Single Phase Photovoltaic Grid-Connecteds Inverter. Transactions of China Electrotechnical Society, 2013, 28(7): 139-146.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2013/V28/I7/139

[1] 汪海宁, 苏建徽, 张国荣, 等．光伏并网发电及无功补偿的统一控制[J]. 电工技术学报, 2005, 20(9): 114-118.
Wang Haining, Su Jianhui, ZhangGuorong. Unitive control of PV grid connected generation and reactive compensation[J]. Transactions of China Electrote- chnical Society, 2005, 20(9): 114-118.
[2] 张兴, 孙龙林, 许颇, 等. 单相非隔离型光伏并网系统中共模电流抑制的研究[J]. 太阳能学报, 2009, 30(9): 1203-1207.
Zhang Xing, Sun Longlin, Xu Po, et al. Research on common-mode current reduction of nonisolated single-phase grid-connected photovoltaic systems [J]. Acta Energiae Solaris Sinica, 2009, 30(9): 1203-1207.
[3] Kerekes T, Teodorescu R, Rodr#x000ed;guez P, et al. A new high-efficiency single-phase transformerless PV inverter topology [J]. IEEE Transactions on Industrial Electronics, 2011, 58(1): 184-191.
[4] 王建华, 张方华, 龚春英, 等. 电压控制型Buck DC-DC变换器输出阻抗优化设计[J]. 电工技术学报, 2007, 22(8): 18-23.
Wang Jianhua, Zhang Fanghua, Gong Chunying, et al. Study of output impedance optimization for voltage mode control Buck DC-DC converter [J]. Transactions of China Electrotechnical Society, 2007, 22(8): 18-23.
[5] Jain S, Agarwal V.A single-stage grid connected inverter topology for PV systems with maximum power point tracking[J]. IEEE Transactions on Power Electronics, 2007, 22(5) : 1928-1940
[6] 吴屏. 燃料电池发电系统前端DC/DC变换器设计[D]. 杭州: 浙江大学, 2007.
[7] Schenck M, Lai J S , Stanton K. Fuel cell and power conditioning system interactions[C]. Proceedings of IEEE Applied Power Electronics Conference, Austin, TX, USA, 2005: 114-120.
[8] Liu C. A novel high-power high-efficiency three- phase phase-shift DC/DC converter for fuel cell application[D]. Virginia Polytechnic Institute and State University, USA, 2005.
[9] Liu C, Lai J S. Low frequency current ripple reduction technique with active control in a fuel cell power system with inverter load[J]. IEEE Transactions on Power Electronics, 2007, 22(4): 1429-1436.
[10] Hu H, Harb S, Kutkut N,et al. Power decoupling techniques for micro-inverters in PV systems-a review[C]. Proceedings of IEEE Energy Conversion Congress and Exposition 2010, Atlanta, GA, USA, 2010: 3235-3340.
[11] J I Itoh, F Hayashi. Ripple current reduction of a fuel cell for a single-phase isolated converter using a DC active filter with a center tap[C]. Proceedings of IEEE Applied Power Electronics Conference, Washington DC, USA, 2009: 1813-1818.
[12] 王建华, 卢旭倩, 张方华, 等. 两级式单相逆变器输入电流低频纹波分析及抑制[J]. 中国电机工程学报, 2012, 32(6): 10-16.
Wang Jianhua, Lu Xuqian, Zang Fanghua, et al. Low frequency input current ripple analysis and reduction in a single phase inverter with two-stage structure[J]. Proceedings of the CSEE, 2012, 32(6): 10-16.
[13] 王建华, 张方华, 龚春英, 等. 带恒功率负载的DC-DC变换器启动过程分析[J]. 电工技术学报, 2009, 24(4): 121-125.
Wang Jianhua, Zhang Fanghua, Gong Chunying, et al. Start-up process analysis of DC-DC converter with constant power load[J]. Transactions of China Electrotechnical Society, 2009, 24(4): 121-125.
[14] 谢小高, 张军明, 钱照明. 基于Y参数模型的三环路电压调整模块控制环路设计[J]. 中国电机工程学报, 2006, 26(25): 60-64.
Xie Xiaogao, Zhang Junming, Qian Zhaoming. Research on control loop design of three-loop VRM based on a Y-parameters model[J]. Proceedings of the CSEE, 2006, 26(25): 60-64.
[15] Ridley R B, Cho B H, Lee F C Y. Analysis and interpretation of loop gains of multiloop-controlled switching regulators[J]. IEEE Transactions on Power Electronics, 1988, 3(4): 489-498.
[16] 杨平, 许建平, 张士宇, 等. 峰值电流控制二次型Boost变换器[J]. 电工技术学报, 2011, 26(5): 101-107.
Yang Ping, Xu Jianping, Zhang Shiyu, et al. Peak current control mode for quadratic Boost converter [J]. Transactions of China Electrotechnical Society, 2011, 26(5): 101-107.