how to eliminate harmonics in inverter output

8:50

3:54

3:53

2:46

5:57

کوتاه

14:49

13:13

9:30

3:45

25:49

4:07

6:25

2:41

5:40

2:46

2:47

5:02

2:26

14:14

4:57

5:51

2:15

4:55

6:05

4:20

13:02

4:43

1:23

8:49

23:56

9:33

4:51

6:40

3:39

1:47

25:55

3:00

23:58

14:57