Overview; Functional Overview - Phocos Any-Grid Series User And Installation Manual

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Overview

Functional Overview

This pure sine wave hybrid inverter charger with solar charge controller (MPPT) can provide power to connected
loads by utilizing PV power, AC power and battery power. Most connections are optional, but there must be at least
one power source (AC or PV):
AC Loads
PV Panels (optional)
Public Grid (optional)*
AC Generator (optional)*
Battery (optional)
Removable Display
Phocos Any-Grid™
Hybrid Inverter Charger
(up to 9 units parallel or 3-phase) * Any-Grid™ accepts one AC input
Fig. 1: System Overview
This unit has one each of the following power connections: battery, PV, AC input, AC output. The unit is designed to
provide continuous power from PV / battery or an AC source, depending on the set priority. Independently, the
priority for charging the battery can be set (the battery can only be charged from AC when the unit is not working in
Off-Grid mode). The switching time between Grid (also valid when an AC generator is used) and Off-Grid modes is
only 10 milliseconds (typical) when a single Any-Grid unit is used. Timers can be used to change the priorities based
on hourly time slots, this is useful for areas where grid power have differing costs throughout the day. The integrated
maximum power point tracking (MPPT) solar charge controller can handle particularly high PV voltages, allowing for
a simpler installation and lower costs than most Off-Grid solar charge controllers. Typically, no combiner boxes or
string fuses / diodes are required.
The pure sine wave AC output and the surge power capability (twice the continuous power rating) assure all types of
AC loads can be powered. Ensure that the peak power requirement of the loads is below the surge power capability
of this inverter.
Two special functions allow even more flexibility: Battery-Free mode and Grid Injection.
In Battery-Free mode, no battery is connected to the unit and an AC source must be present. The unit will then
provide as much power from PV as is available to supply loads, adding any missing power from the AC source. If there
is more PV power available than can be utilized by the loads, then the PV power is reduced to ensure no power feed-
in into the grid.
The Grid Injection functionality allows feeding any excess power into the grid. If there is excess PV power beyond
what is utilized by the load and for battery charging, this power can be fed into the public grid to take advantage of
net metering or feed-in tariffs. In this way all the PV power can be used even if the battery is full and the loads do not
require all the available PV power. Feeding into the grid may be prohibited in some areas so this function is locked by
a PIN code to avoid accidental grid injection.
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