581306.fig.0011a
(a)
581306.fig.0011b
(b)
581306.fig.0011c
(c)
Figure 11: Spectra of the 𝑉 𝑎 1 𝑏 1 , 𝑉 𝑎 2 𝑏 2 and 𝑉 𝑎 𝑠 voltages of the system with discontinuous synchronized PWM ( 𝐹 = 3 5  Hz, 𝐹 𝑠 = 1  kHz).