Table 1 Comparison of four methods of feeding the MLI.
Configuration | \({V}_{o max}\) | Number of steps \(({N}_{step})\) | Number of levels \((m)\) | \(m if (n=3)\) | Percentage reduction in the number of switches |
|---|---|---|---|---|---|
Symmetric | \(n.{V}_{dc}\) | \(n+1\) | \(2n+1\) | 7 | \(\left[1-\frac{m+3}{2\left(m-1\right)}\right]*100\) |
Duplicated | \(2(n-1).{V}_{dc}\) | \(2n\) | \(4n-1\) | 11 | \(\left[1-\frac{\left({\text{m}}+9\right)}{4\left(m-1\right)}\right]*100\) |
Binary | \({(2}^{n-1}).{V}_{dc}\) | \({2}^{n}\) | \(\left({2}^{n+1}\right)-1\) | 15 | \(\left[1-\frac{ln\left(2m+2\right)}{ln\left(2\right).\left(m-1\right)}\right]*100\) |
Trinary | \(({3}^{n}-1/2).{V}_{dc}\) | \(({3}^{n}-1/2)\) | \({3}^{n}\) | 27 | \(\left[1-\frac{{\text{ln}}{(m-3)}^{2}+4}{2\left(m-1\right)}\right]*100\) |
