Photovoltaic Generator Grid-Friendly Connection System and Simulation Study

doi:10.11930/j.issn.1004-9649.2016.04.160.06

Abstract

Abstract: A new type of inverter for grid-friendly connection of photovoltaic generator is studied and simulated to improve power quality of the main grid. The inverter system makes use of a two-level DC/DC and DC/AC structure and utilizes three-phase instantaneous reactive power theory to detect reactive power and harmonic currents. The inverter is combined with Active Power Filter(APF) to not only produce active power but also compensate reactive power and harmonics, enabling grid-friendly interconnection. The DC/DC circuit of the inverter system uses boost circuit and performs maximum power tracking based on the conductance increment method. The DC/AC circuit of the system uses three-phase bridge voltage inverter circuit and hysteresis control method. Finally, the simulation model and simulation results are provided to verify the feasibility of the proposed grid-friendly connection inverter for photovoltaic.

Key words: photovoltaic generator, grid-friendly interconnection, power quality, conductance increment, hysteresis control, maximum power tracking

CLC Number:

TM615

SU Yuankai, , ZHANG Jie, HU Shihao, SU Yimin, SU Shiping, LIU Guiying. Photovoltaic Generator Grid-Friendly Connection System and Simulation Study[J]. Electric Power, 2016, 49(4): 160-165.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2016.04.160.06

https://www.electricpower.com.cn/EN/Y2016/V49/I4/160

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