Page 74 - Renewable Energy Devices and System with Simulations in MATLAB and ANSYS

Overview of Single-Phase Grid-Connected Photovoltaic Systems 61

+ +

Grid side
i g Measurements

i – – +
+ v
V inv_ref v g
L 2
LCL filter
inv
V* C f
PWM inv L 1

Inverter control

g A B
Full-bridge inverter

+ –
d_boost C DC + – v

V DC
V DC + V DC –
PWM Boost control MATLAB ® /Simulink ® model of a double-stage single-phase grid-connected PV system.
PWM b V pv + V pv – Boost converter

V pv

v
i pv + –

–
i
+
PV panels PV side V_a V_b SOGi V g

Discrete, Ts=1e–06 s. Solar irradiance (kW/m 2 ) 25 Ambient temp. (°C) k kSogi Ts Td PLL FIGURE 3.24