Table 7 Experimental and simulation comparison of the four methods

Weight coefficient

With

Without

Without

Without

THD

4.40%

4.46%

1.53%

1.57%

ASF

1.71 kHz

1.70 kHz

4.33 kHz

3.82 kHz

Frequency spectrum characteristics

Wide

Wide

Concentrate at f_s

Concentrate at f_s

v_o

 < 1%V_dc

 < 1%V_dc

 < 1%V_dc

 < 1%V_dc

Calculating time

43.41 μs

36.28 μs

53.62 μs

23.26 μs