A Nonlinear Controller for Neutral Point Piloted (T-Type) Multilevel Inverter-Based Three-Phase Four-Wire DSTATCOM

Table 2

Parameters used for simulation study of 3P4W NPP T-type DSTATCOM.

Parameters	Values
AC line voltage	Three-phase, four-wire, 415 V, 50 Hz
Line impedance	Rs = 0.01 Ω, Ls = 1 mH
DC bus voltage of 3P4W DSTATCOM	350 V (for each capacitor)
DC bus capacitance of 3P4W DSTATCOM	2200 μF (for each capacitor in the H-bridge cell)
DSTATCOM coupling inductor	Lc = 4.8 mH
PWM switching frequency for 3P4W DSTATCOM (fcr)	5 kHz
Load	Three-phase controlled rectifier, Rdc = 30 Ω, Ldc = 10 mH, firing angle = 20°, commutation inductance = 1.5 mH; single-phase universal rectifier connected between the b–phase and the neutral, Rdc = 5 Ω, Ldc = 50 mH, commutation inductance = 1.5 mH; single-phase universal diode rectifier connected between the c phase and the neutral, Rdc = 5 Ω, Ldc = 50 mH, commutation inductance = 1.5 mH
Sampling time	Ts = 5e–6 s.