Alpha ESS EMS Reference manual

V01
Residential Product EMS
Introduction Manual

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Version Information
Version
Date
Content
V01
21062019
New

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Content
Version Information ......................................................................................... 2
Content.............................................................................................................. 3
Self-Consumption Optimization.................................................................. 4
Backup (UPS) ............................................................................................... 5
2.1 Setting on EMS LCD.............................................................................. 5
2.1.1 SMILE5..............................................................................................................5
Load Shifting................................................................................................ 6
3.1 Setting on EMS LCD.............................................................................. 6
3.1.1 SMILE5..............................................................................................................6
3.2 Setting on AlphaCloud.......................................................................... 7
Peak Shaving................................................................................................ 8
4.1 Setting on EMS LCD.............................................................................. 8
Max Feed-in .................................................................................................. 9
5.1 Setting on EMS LCD.............................................................................. 9
5.1.1 SMILE5..............................................................................................................9
5.2 Setting on AlphaCloud........................................................................ 10
Aux Contact................................................................................................ 11
6.1 Setting on AlphaCloud........................................................................ 11
Backup Box ................................................................................................ 14
7.1 Load Management Function Setting on EMS LCD............................ 15
7.2 Load Management Function Setting on AlphaCloud........................ 16

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Self-Consumption Optimization
This is default function logic of AlphaESS energy storage system.
The typical electricity demand curve usually doesn’t meet the PV generation curve.
By storing the surplus PV generation into battery storage unit, it can maximize PV
generation and reduce electricity bill.

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Backup (UPS)
Storage system will provide the power to the critical loads when the grid fails.
The system can switch into an off-grid mode when a power outage occurs or grid power
supply is insufficient.
2.1 Setting on EMS LCD
2.1.1 SMILE5
Users can also set UPS emergency priority or UPS emergency reserve to meet the
needs of different families for stored electricity.
Please set the UPS Reserve SOC on EMS LCD

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Load Shifting
Reduce customer's electricity bill by storing electricity during off-peak time and shift
energy to be used at peak time.
Especially when the electricity tariff is different in one day, you can set battery grid
charging time on EMS LCD, on AlphaCloud monitoring portal or through AlphaESS
App.
3.1 Setting on EMS LCD
3.1.1 SMILE5
Click the mode then set up force charge mode as enable.
Set the charge and discharge time.

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3.2 Setting on AlphaCloud
End user can set the grid charging time and battery discharging time on the portal or
through AlphaESS App.

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Peak Shaving
The goal is to avoid the upgrade of transformer capacity to supply the peaks of the
highly variable loads. Energy storage provides a fast response and emission-free
solution. The ESS benefits customers on their bills by saving cost on infrastructure and
peak demand charges.
4.1 Setting on EMS LCD
This function is now realized by EMS3.0 platform and you can set the Pmeteroffset
parameter on EMS LCD.
The default PmeterOffset of the system is 0, that means the peak shaving function is
off.
If this function is on, EMS will adjust the PCS output power so that the total grid power
will meet the set value.

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Max Feed-in
In some countries there is regulation for PV feed-in rate or it must be zero export.
After setting the PV capacity you can set this parameter on EMS LCD or on Alpha
Cloud portal. Then the grid feed-in power from the PV generation will be limited.
Note: in AC mode system Alpha ESS can’t limit other PV-inverter generated
power.
5.1 Setting on EMS LCD
5.1.1 SMILE5
Set on-grid capacity (How much kWp is installed with the on-grid inverter), storage
capacity (How much kWp is installed with the AlphaESS storage inverter) and number
of PV strings (MPPT number).
Click the Grid Function to set up relevant parameters about the grid.

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5.2 Setting on AlphaCloud
Installer can set the max feed-in rate on the other information interface of the “System
Setup” page.