基于i_p i_q算法的三相四线制谐波电流检测方法

Harmonic current detection method of three-hase four-wire system based on i_p i_q algorithm

通过在ip iq算法的基础上增加一个对应于零序分量的零轴分量,形成ip iq i0运算方式,这样可解决零序分量的问题,但会使检测方法的复杂程度大大增加。经推导,ipiq检测法可直接应用于不对称三相四线制系统中,无需先剔除零序分量,同样能够正确检测出基波零序、负序及谐波分量,仿真结果证明其结论的正确性。

Based on the ipiq algorithm,adding a corresponding to the zero-sequence component of the zero-axis, to form a ipiqi0 computing means, this is a good solution to the problem of zero-sequence components, but the complexity of the detection method is greatly increased.Deduced by the ipiq detection method,it directly applied to asymmetric three phase four wire system,no need to remove zero sequence component,it is correctly detects the fundamental zero-sequence,negative sequence and harmonic component, the simulation results show that its conclusions are correct.