基于小波阈值去噪的直流充电桩电能计量算法研究

针对直流充电桩输出电压、电流中包含纹波导致直流电能计量准确性降低的问题，在研究直流电能计量算法基础上，分析纹波如何影响直流电能计量精度，并给出采用经典滤波法后的仿真结果，说明了经典滤波方法的有效性。提出了一种基于小波阈值函数去噪方法的现代滤波算法，对直流充电桩充电实测数据进行去噪处理，同时将改进函数与传统的软、硬阈值小波去噪法分别进行仿真结果对比分析，得到了趋势相同的直流充电数据，验证了改进小波阈值去噪算法对提高直流充电桩计量精度效果最好。

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