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首页> 外文会议>Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition >A coordinated active and reactive power control strategy for grid-connected cascaded photovoltaic (PV) system in high voltage high power applications
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A coordinated active and reactive power control strategy for grid-connected cascaded photovoltaic (PV) system in high voltage high power applications

机译：高压大功率应用中的并网级联光伏（PV）系统的协调有功和无功功率协调控制策略

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摘要

This paper presents a grid-connected high voltage high power PV system with cascaded multilevel inverters. A coordinated active and reactive power control strategy is proposed to achieve an effective active and reactive power distribution for each PV inverter module, as well as improve the system power quality and reliability. Vector diagrams are derived to illustrate the power distribution principle. Accordingly, a control system, including the active and reactive control extraction, voltage distribution and synthesization, and 3rd harmonic voltage injection is developed. Finally, a 3MW/12kV PV system with the proposed control strategy is modeled and simulated in MATLAB+PSIM platform. A downscaled PV system including two cascaded 5kW inverters with proposed control strategy is also implemented in the laboratory. The simulation results are presented to verify the validity of the proposed technology.1
机译：本文提出了一种具有级联多电平逆变器的并网高压大功率光伏系统。提出了一种协调的有功和无功功率控制策略，以实现每个光伏逆变器模块的有效有功和无功功率分配，并提高系统的电源质量和可靠性。得出矢量图以说明功率分配原理。因此，开发了一种控制系统，包括有功和无功控制提取，电压分布和合成以及3 rd 谐波电压注入。最后，在MATLAB + PSIM平台上对具有所提出的控制策略的3MW / 12kV光伏系统进行了建模和仿真。实验室中还实施了一个缩小规模的光伏系统，该系统包括两个具有建议的控制策略的级联5kW逆变器。仿真结果验证了所提技术的有效性。 1

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