Technical data

Chapter 2 Overview
3
Chapter 2 Overview
2.1 Grid-tie PV system
CPS SC100KT-O/US-480 grid connection photovoltaic
inverter applies to all kinds of commercial rooftop grid
connected system or power station system. Normally, the
system consists of PV modules, DC power distribution unit,
grid connection inverter and AC power distribution unit
(Figure 2-1). Solar energy is converted to direct current
through PV modules. The direct current is then converted to
alternative current with the same frequency and phase as
the grid through grid connection inverter. All or part of the
alternative current is supplied to the local load. The
remaining or all electricity is fed to the grid.
Figure 2-1 Grid connection photovoltaic power generation system
2.2 Inverter circuit structure
The basic schematic diagram of CPS
SC100KT-O/US-480 inverter is shown in Figure 2-2. The
output of PV modules first passes through DC circuit breaker.
The inverter converts DC voltage to 3-phase AC voltage.
The 3-phase AC voltage will be removed of high frequency
DC power
distribution
unit
AC power
distribution
unit
Metering
out
Metering
in
AC load
AC grid