摘要
微电网环境下,电动汽车V2G系统除了给动力电池补充电能外,还可以作为分布式储能装置,补偿网侧谐波和无功,改善微电网供电品质。针对微电网环境下V2G系统补偿电网电能质量的控制研究,为提高V2G系统电能质量调节的补偿精度,提出了一种基于比例反馈积分和重复控制的复合电流跟踪控制方法,采用含有理式校正的相位补偿方法对重复控制进行改进,并对复合控制器进行稳定性分析和参数设计。最后,通过仿真和试验验证了复合控制策略的有效性。
The vehicle-to-grid( V2 G) system can not only supply the electric energy for power battery,but also be used as a distributed energy storage device to compensate the harmonic and reactive power of the network,and improve the power quality of the micro-grid. This paper focuses on the power quality enhancement control. To improve the power quality,the compound current tracking control strategy based on proportional feedback integral control and repetitive controller was proposed. A novel phase lead compensator in the repetitive controller was presented to improve the current tracking precision. With the proposed control strategy,the V2 G system can not only response the power dispatch instruction,but also compensate harmonic and reactive current. The simulation and experiments verified the effectiveness of the proposed control strategy.
引文
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