Chapter 1: Introducing The Solaredge Power Harvesting System; Power Optimiser - SolarEdge SE5K Installation Manual

10 Chapter 1: Introducing the SolarEdge Power Harvesting System
Chapter 1: Introducing the SolarEdge Power
Harvesting System
The SolarEdge power harvesting solution maximizes the power output from any type of
solar Photovoltaic (PV) installation while reducing the average cost per watt. The
following sections describe each of the system's components.
Figure 1: The SolarEdge power harvesting system components

Power Optimiser

The power optimizers are DC-DC converters connected to PV modules in order to
maximize power harvesting by performing independent Maximum Power Point
Tracking (MPPT) at the module level.
The power optimizers regulate the string voltage at a constant level, regardless of string
length and environmental conditions.
The power optimizers include a safety voltage function that automatically reduces the
output of each power optimizer to 1 Vdc in the following cases:
During fault conditions
The power optimizers are disconnected from the inverter
The inverter ON/OFF switch is turned OFF
The safety switch on the DC Safety Unit is turned OFF
The inverter AC breaker is turned OFF
Each power optimizer also transmits module performance data over the DC power line
to the inverter.
-Three Phase System Installation Guide MAN-01-00505-1.2