【摘要】 为解决传统风电和光伏发电系统独立运行时受天气影响较大、能量利用率不高及蓄电池充放电控制不合理等问题,充分利用风电和光伏系统之间良好的互补性,设计了风能和光能互补的发电系统。提出一种以定电压法启动结合功率前馈的变步长电导增量法最大功率点跟踪(MPPT)算法,减小功率追踪过程中的能量损耗,改善最大功率点附近的振荡问题。利用风能和光能系统与蓄电池之间的能量流动状态,协调控制蓄电池充放电电流,延长蓄电池寿命,提高系统整体稳定性。实验结果证明了系统设计和控制策略的正确性和有效性。更多还原

【Abstract】 Traditional independent photovoltaic/wind power system is influenced by different weather,the efficient energy availability is low and has unreasonable battery charge and discharge control issues.For these problems,a photovoltaic wind hybrid power generation system is designed,an improved maximum power point tracking(MPPT) algorithm and energy coordinated control strategy are proposed.Wind and solar is complementary,efficient MPPT will reduce energy loss during tracking to the maximum power point and reduce the shake near the maximum power point.The energy coordinated control strategy can extend the battery life.The experimental study demonstrate the correctness and feasibiliy of the system design and control strategy.更多还原