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9.1 XW Pro to HAB 7.5 kWh Li-ion Battery Solution Guide
Overview
The XW Pro is a utility interactive inverter/charger with grid-tied,
off-grid, and backup power capability. The XW Pro inverters commu-
nicate with KiloVault® HAB™ Battery Management System (BMS),
through the Conext Gateway, InsightHome, or Insight Facility. These
devices provide a CAN Bus interface for BMS communication.
In addition to providing functions of protection, cell balancing, state-
of-charge (SOC) and state-of-health (SOH) calculation, also provide
a reference for charging voltage and charging current. This reference
may be optimized dynamically by the BMS, taking into account the
battery SOC, SOH, temperature, or other factors. It is necessary, in
such cases, to update the charging characteristics of the XW Pro
dynamically as these values change. The operation described in this
application note applies to all BMS communication protocols that the
system is compatible with.
Supported Architectures
The following diagrams provide a typical system architecture of the
Conext Gateway, XW Pro, and KiloVault® HAB™. Currently BMS
communication is supported for systems with a single XW Pro inverter
and optional AC coupled PV inverters. Systems with multiple XW Pro
inverters and DC coupled systems with Conext MPPT solar charge
controller not currently available with BMS communication (future
release). Systems with multiple XW Pro inverters and/or DC coupling
with Conext MPPT solar charge controller may be installed without
BMS communications subject to the battery vendor approval of the
use-case. A Conext Battery Monitor is recommended for these appli-
cations to monitor the battery SOC.
9.2 Single XW Pro with Single LEADER KiloVault® HAB™
(Split-Phase and Single-Phase) with AC Coupling
The XW Pro with KiloVault® HAB™ can be used with AC coupled PV
inverters or microinverters. The XW Pro will regulate charging from
the AC coupled PV inverters using frequency shifting, based on the
battery charging limits and SOC information communicated by the
BMS. See the XW Pro AC Coupling Solutions Guide (document part
number: 990-6421) for information on the design and installation of
AC coupled systems, and be sure to follow all system sizing and other
application requirements as described in the document.
JUNE 2022 / Rev: 1.0
For information about operating the Conext XW Pro Inverter/Charger, see the Conext XW Pro Inverter/Charger Owner’s Guide (975-0240-01-01).
2022
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