An Improved Walsh Function Algorithm for Use in Sinusoidal and Nonsinusoidal Power Components Measurement

Table 2

The result of case B.

FFT approach	Active power 𝑃 (watts)	Reactive power 𝑄 (var)
Phase a	1027.5	569.5
Phase b	819.3	223.3
Phase c	2098.6	1538.9
Total	3945.4	2331.7
Proposed IWF method
Phase a	1028	569.6
Phase b	818.6	223.8
Phase c	2099	1539
Total	3945.6	2332.4