${V}_{\mathit{Hrms}}=\sqrt{{\left({V}_{rms}\right)}^{2}-{\left({V}_{1}\right)}^{2}}=\sqrt{{\left(\frac{2}{\sqrt{5}}\right)}^{2}-{\left(\frac{2\sqrt{2}}{\pi }cos\left(\frac{\pi }{10}\right)\right)}^{2}}=0.2585208456$ (15.88)

Hence, total harmonic distortion is

$THD=\frac{\mathrm{r}.\mathrm{m}.\mathrm{s}.\mathrm{total}\mathrm{harmonic}\mathrm{voltage}}{\mathrm{r}.\mathrm{m}.\mathrm{s}.\mathrm{total}\mathrm{voltage}}=\frac{0.2585208456}{2/\sqrt{5}}=0.2890350922\mathrm{or}28.9%\mathrm{Or}28.9035%$ (15.89)

#### 15.4.1.3 Pulse Width Modulation Mode of Operation

If a five-phase voltage-source inverter is operated in PWM mode, apart from the already described 10 states, there are additional 22 switching states. These remaining 22 switching states encompass three possible situations: all the states when four switches from upper (or lower) half and one from the ...

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