Arno Smets, Nishant Narayan

PV Systems - Components and ConceptsInverters in PV Systems

Week 7.4

DC and AC current

0

Cu

rren

tI

Time t

DC =

AC

Inverter

DC AC

Stand-alone PV System

Distributionpanel

Stand-aloneinverter

PV array Balance Of System Loads

AC load

Chargecontroller

DC load

Batterybank

Grid connected system

Distributionpanel

Grid connectedinverter

PV array Balance of System Loads

Grid

AC load

Hybrid PV System

Bimodalinverter

PV array Balance Of System Loads

AC load

Chargecontroller

DC load

Batterybank

Grid

Distributionpanel

Generic I-V curve of a solar cell

VOC

ISC

MaximumPower Point(MPP)

Pow

erP

Cu

rren

tI

Voltage V

PMPP

Implementation topologies

Central inverter String inverterModule inverter Multi-string inverter

Central inverter

I

V

?

Module inverter

String inverter

Multi-string inverter I

V

I

V

Grid

I

V

Characteristics of a solar inverter

η

MPPT

Anti-Islanding

T, H2O

Lowharmonics

Lifespan

I

V

I

t

Thank you for your attention!