Erratum: Rodrigo-Mor et al. Principles of Charge Estimation Methods Using High-Frequency Current Transformer Sensors in Partial Discharge Measurements. Sensors 2020, 20, 2520

The authors wish to make the following erratum to this paper [1]: the summation symbol in the Equations (11) and (12) should be a product symbol.

The corrected Equations (11) and (12) appear below:

$$H\left(s\right)=\frac{U\left(s\right)}{I\left(s\right)}=\frac{\alpha ·s·{\prod }_{i=1}^{i=m}\left(s+z_i\right)}{{\prod }_{j=1}^{j=n}\left(s+p_j\right)}$$

(11)

$$\frac{U\left(s\right)}{s^2}=I\left(s\right)\frac{\alpha ·{\prod }_{i=1}^{i=m}\left(s+z_i\right)}{s·{\prod }_{j=1}^{j=n}\left(s+p_j\right)}$$

(12)

The authors apologize for any inconvenience caused and state that the scientific conclusions are unaffected. The original article has been updated.