独立直流微网能量管理控制策略

在直流微网控制系统中,维持母线电压稳定以及能量的合理分配对系统可靠运行具有重要的指导意义。针对基于光伏发电的独立直流微网系统,提出一种新的能量管理控制策略,根据光伏DC/DC变换器在不同光照条件下的控制策略,利用蓄电池储能单元作为支撑,通过蓄电池充放电时不同的能量管理控制策略,维持母线电压稳定,为直流负载提供电能,其核心是使光伏电池与蓄电池储能单元协调工作,确保直流微网的高效稳定运行,最后通过实验结果验证了所提出控制策略的正确有效性。

Energy Management Control Strategy of stand-alone DC Micro-grid

Maintain the DC bus voltage stability and the reasonable distribution of the energy have great guiding significance to the reliable operation of the DC micro-grid control system. This paper analyses DC micro-grid control system based on photovoltaic power generation system, put forward a new control strategy for energy management. according to the control strategy of Photovoltaic DC/DC converter under different light conditions on the state of off-grid, and by using storage battery energy storage unit as support, through different energy management Control Strategy when the battery charge or discharge, maintain the stability of DC bus voltage, providing power for DC load. Its core is to make the photovoltaic cell and the battery energy storage unit coordinated work, to ensure the efficient and stable operation of the dc micro-grid, finally through the experimental results verify the correctness of the proposed control strategy.