Analysis and Verification of Compound SRFPI-LADRC Strategy for an Off-Grid Single-Phase Inverter

Table 2

Parameters of the inverter system.

Parameters	Values	Parameters	Values
Switching frequency, fs	20 kHz	DC-link voltage, Vdc	190 V
Fundamental angular frequency, ωf	100π rad/s	The bandwidth of the controller, ωc	5500 rad/s
Filter inductance, L	700 μH	The bandwidth of the observer, ωo	10000 rad/s
Filter capacitance, C	40 μF	The proportional factor of the PI controller, kp	1.5
ESR of the inductance, re	0.1 Ω	Integral factor of the PI controller, ki	100
Voltage reference,	156 V/0 V	Dead time, td	1.3 μs