581306.fig.0013a
(a)
581306.fig.0013b
(b)
581306.fig.0013c
(c)
581306.fig.0013d
(d)
Figure 13: Spectra of the 𝑉 𝑎 1 𝑏 1 , 𝑉 𝑎 2 𝑏 2 𝑉 𝑎 𝑠 and 𝑉 𝑥 𝑠 voltages of the system with discontinuous synchronized PWM ( 𝐹 = 3 5  Hz, 𝐹 𝑠 = 1  kHz).