Research Article

Synchronous Current Compensator for a Self-Balanced Three-Level Neutral Point Clamped Inverter

Figure 3

The effect of low pass filter time constant in ac and dc signals. (a) The RMS value of current and phase shift ( ); (b) the amplitude reduction of the harmonic current.
620607.fig.003a
(a)
620607.fig.003b
(b)