Table 4.

Comparison with other studies.

	Utilizing Current Signal [Proposed Method] [10,11]			Utilizing Injected Reference Signal [9,28,29,30,31]
Estimation of soft fault severity	O	X	X	X	X	X	X	O
Online diagnosis under varying conditions	O	X	O	O	X	X	O	X
Require reference signal design	X	X	X	O	O	O	O	O
Require domain knowledge and cable parameters	X	X	X	X	O	O	O	O
Require waveform generator	X	X	X	O	O	O	O	O

For the first two rows, O is better. For the last three rows, X is better.