Power Optimizer
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/P switch is turned OFF
The inverter AC breaker is turned OFF
The Rapid Shutdown (PVRSS)is initiated by one of the following methods:
Inverter AC breaker is turned OFF, or AC to the inverter is disconnected by
another method (intentionally or as result of a fault)
Inverter ON/OFF/P switch is turned OFF
The Connection Unit with Safety Switch is turned OFF
Each power optimizer also transmits module performance data over the DC power line
to the inverter.
Two types of power optimizers are available:
Module Add-on power optimizer – connected to one or more modules
Smart modules - the power optimizer is embedded into a module
EV Charging Single Phase Inverter
The EV Charging Single Phase Inverter (referred to as “inverter”throughout) efficiently
converts DC power from the modules into AC power that can be fed into the main
ACservice of the site and from there to the grid. The inverter also receives the
monitoring data from each power optimizer and transmits it to a central server (the
monitoring platform; requires Internet connection).
The EV Charging Single Phase Inverter is designed to provide reliable and economical
charging of an electric vehicle (EV). It provides Level 2 EV charging from both the grid
and the PV system, and is designed to work with all plug-in vehicles with J1772 (Type 1)
socket.
An EV Charger cable (ordered separately)is required for EV charging:
EV Charging Single Phase Inverter Guide MAN-01-00588-1.1
14 Power Optimizer
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