Chapter 1: Introducing The Solaredge Power Harvesting System; Power Optimiser - SolarEdge SE66.6KUS Installation Manual

Chapter 1: Introducing the SolarEdge Power Harvesting System

Chapter 1: Introducing the SolarEdge Power
Harvesting System
The SolarEdge power harvesting solution is designed to maximize 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 p ower optimisers 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 optimisers regulate the string voltage at a constant level, regardless of string length and
environmental conditions.
The power optimisers include a safety voltage function that automatically reduces the output of each
power optimiser to 1 Vdc in the following cases:
During fault conditions
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The power optimisers are disconnected from the inverter
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The inverter ON/OFF switch is turned OFF
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The safety switch on the Connection Unit is turned OFF
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The inverter AC breaker is turned OFF
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The Rapid Shutdown (PVRSS) is initiated by one of the following methods:
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Inverter AC breaker is turned OFF, or AC to the inverter is disconnected by another method
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(intentionally or as result of a fault)
Inverter ON/OFF switch is turned OFF
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The Connection Unit is turned OFF
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Each power optimiser also transmits module performance data over the DC power line to the inverter.
Two types of power optimisers are available:
Module Add-on power optimiser – connected to one or more modules
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Smart m odules - t he p ower optimiser is embedded into a module
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-Three Phase Inverter with Synergy Technology Installation MAN-01-00402-1.4