一种高可靠性的无漏电流并网逆变器
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摘要
现有无漏电流非隔离型并网逆变器存在系统体积和重量大、开关器件多、电路硬件成本高、可靠性差等问题。基于此,提出一种新型无漏电流并网逆变器,该结构采用单电感滤波,相比于采用双电感滤波电路可以减小系统体积和重量,增加系统功率密度;电路中仅采用4个开关器件,开关器件少可以减少硬件成本,增加电路可靠性。详细分析该结构的工作原理。最后,通过实验验证了理论分析的正确性和电路的可行性。
Aimming at the non-isolated grid-connected inverter has the defects of larger volume,greater weight,more switches,higher cost and worse reliability,anovel non-isolated grid-connected inverter was proposed. Compared with the inverter with double inductance filter circuit,this inverter could reduce the volume and weight of the system and increase the power density of the system. The utilization of four switches could reduce the cost and increase the reliability of the system. The principle of the structure was analyzed in detail. Finally,the correctness of the theoretical analysis and the feasibility of the circuit were verified by experiments.
Aimming at the non-isolated grid-connected inverter has the defects of larger volume,greater weight,more switches,higher cost and worse reliability,anovel non-isolated grid-connected inverter was proposed. Compared with the inverter with double inductance filter circuit,this inverter could reduce the volume and weight of the system and increase the power density of the system. The utilization of four switches could reduce the cost and increase the reliability of the system. The principle of the structure was analyzed in detail. Finally,the correctness of the theoretical analysis and the feasibility of the circuit were verified by experiments.
引文
[1] Dong-Kyun Ryu,Young-Ho Kim,Un-Gu Kim,et al. Interleaved Active Clamp Flyback Inverter Using a Synchronous Rectifier for a Photovoltaic AC Module System[C]//International Conference on Power Electronics,2011:3631-2636.
[2] Young-Ho Kim,Jin-Woo Jang,Soo-Cheol Shin,et al. Weighted-efficiency Enhancement Control for a Photovoltaic AC Module Interleaved Flyback Inverter Using a Synchronous Rectifier[J]. IEEE Transactions on Power Electronices,2014,29(12):6481-6493.
[3] Freddy Chan,Hugo Calleja. Reliability Estimation of Three Single-phase Topologies in Grid-connected PV Systems[J].IEEE Transactions on Industrial Electronics,2011,58(7):2683-2689.
[4]康家玉,王旭,王素娥,等.一种基于H6桥单相光伏并网逆变器控制策略的研究[J].可再生能源,2016,34(8):1144-1150.
[5] Lu Wang,Yan Li,Qi Yan,et al. Dual Buck Grid-connected Inverter Based on GaN Devices[C]//2016 Asian Conference on Energy,Power and Transportation Electrification(ACEPT),2016:1-6.
[6] Vazquez G,Sosa JM,Martinez-Rodriguez PR,et al. Diode-rectifier Clamped Half-bridge Single-phase Optimized Transformerless Inverter[C]//2016 13th International Conference on Power Electronics(CIEP),2016:29-34.
[7] Xiao Hua F,Zhang Li,Li Yanqing. A Zero Voltage Transition HERIC-type Transformerless Photovoltaic Grid-connected Inverter[J]. IEEE Transactions on Industrial Electronics,2016,64(2):1222-1232.
[8] Siwakoti Yam P,Frede Blaabjerg. A Novel Flying Capacitor Transformerless Inverter for Single-phase Grid Connected Solar Photovoltaic System[C]//2016 IEEE 7th International Symposium on Power Electronics for Distributed Generation Systems(PEDG),2016:1-6.
[9] Shakil Ahamed Khan,Guo Youguang,Zhu Jianguo. A High Efficiency Transformerless PV Grid-connected Inverter with Leakage Current Suppression[C]//9th International Conference on Electrical and Computer Engineering,2016:190-193.
[10] Li Hong,Zeng Yangbin,Zheng Trillion Q,et al. A Novel H5-D Topology for Transformerless Photovoltaic Grid-connected Inverter Application[C]//2016 IEEE 8th International Power Electronics and Motion Control Conference(IPEMCECCE Asia),2016:1-5.
[11]王金华,顾云杰,胡斯登,等.一种二极管无源钳位的单相无变压器型光伏并网逆变拓扑研究[J].中国电机工程学报,2015,35(6):1455-1462.
[12] Cui Wenfeng,Luo Haoze,Gu Yunjie,et al. Hybrid-bridge Transformerless Photovoltaic Grid-connected Inverter[J]. IEEE Transactions on Power Electronices,2015,8(3):439-446.
[13] Xiao Hua F,Lan Ke,Zhou Bin,et al. A Family of Zero-current-transition Transformerless Photovoltaic Grid-connected Inverter[J]. IEEE Transactions on Power Electronices,2015,30(6):3156-3165.
[14] Chan F,Hugo C. Reliability Etimation of Three Single-phase Topologies in Grid Connected PV Systems[J]. IEEE Transactions on Industrial Electronics,2011,58(7):2683-2689.
[2] Young-Ho Kim,Jin-Woo Jang,Soo-Cheol Shin,et al. Weighted-efficiency Enhancement Control for a Photovoltaic AC Module Interleaved Flyback Inverter Using a Synchronous Rectifier[J]. IEEE Transactions on Power Electronices,2014,29(12):6481-6493.
[3] Freddy Chan,Hugo Calleja. Reliability Estimation of Three Single-phase Topologies in Grid-connected PV Systems[J].IEEE Transactions on Industrial Electronics,2011,58(7):2683-2689.
[4]康家玉,王旭,王素娥,等.一种基于H6桥单相光伏并网逆变器控制策略的研究[J].可再生能源,2016,34(8):1144-1150.
[5] Lu Wang,Yan Li,Qi Yan,et al. Dual Buck Grid-connected Inverter Based on GaN Devices[C]//2016 Asian Conference on Energy,Power and Transportation Electrification(ACEPT),2016:1-6.
[6] Vazquez G,Sosa JM,Martinez-Rodriguez PR,et al. Diode-rectifier Clamped Half-bridge Single-phase Optimized Transformerless Inverter[C]//2016 13th International Conference on Power Electronics(CIEP),2016:29-34.
[7] Xiao Hua F,Zhang Li,Li Yanqing. A Zero Voltage Transition HERIC-type Transformerless Photovoltaic Grid-connected Inverter[J]. IEEE Transactions on Industrial Electronics,2016,64(2):1222-1232.
[8] Siwakoti Yam P,Frede Blaabjerg. A Novel Flying Capacitor Transformerless Inverter for Single-phase Grid Connected Solar Photovoltaic System[C]//2016 IEEE 7th International Symposium on Power Electronics for Distributed Generation Systems(PEDG),2016:1-6.
[9] Shakil Ahamed Khan,Guo Youguang,Zhu Jianguo. A High Efficiency Transformerless PV Grid-connected Inverter with Leakage Current Suppression[C]//9th International Conference on Electrical and Computer Engineering,2016:190-193.
[10] Li Hong,Zeng Yangbin,Zheng Trillion Q,et al. A Novel H5-D Topology for Transformerless Photovoltaic Grid-connected Inverter Application[C]//2016 IEEE 8th International Power Electronics and Motion Control Conference(IPEMCECCE Asia),2016:1-5.
[11]王金华,顾云杰,胡斯登,等.一种二极管无源钳位的单相无变压器型光伏并网逆变拓扑研究[J].中国电机工程学报,2015,35(6):1455-1462.
[12] Cui Wenfeng,Luo Haoze,Gu Yunjie,et al. Hybrid-bridge Transformerless Photovoltaic Grid-connected Inverter[J]. IEEE Transactions on Power Electronices,2015,8(3):439-446.
[13] Xiao Hua F,Lan Ke,Zhou Bin,et al. A Family of Zero-current-transition Transformerless Photovoltaic Grid-connected Inverter[J]. IEEE Transactions on Power Electronices,2015,30(6):3156-3165.
[14] Chan F,Hugo C. Reliability Etimation of Three Single-phase Topologies in Grid Connected PV Systems[J]. IEEE Transactions on Industrial Electronics,2011,58(7):2683-2689.