Huawei iSitePower-M MAP05A1 - Mains+Genset+Ess

(A) PV string (B) DC switch (C) AC parallel box
(D) PDB (E) Load (F) Genset
(I) AC PDC (J) Router (K) 4G wireless backhaul
module
(L) FusionSolar Smart PV
Management System
(M) FusionSolar app (Q) AC switch
6.5 Mains+Genset+ESS
Working Logic
1. When the mains is available, the genset shuts down. The mains supplies
power to loads and charges the ESSs.
2. When the mains is unavailable:
a. The ESSs supply power to loads. When the lithium battery SOC is less
than or equal to the value of Genset Startup SOC(%), the genset starts
and the mode switches to b. If the genset fails to start, the ESSs discharge
to the value of End-of-Discharge SOC for Lithium Batteries(%), and
the loads power
o.
b. The genset supplies power to loads and charges the ESSs until the value
of Genset Shutdown SOC(%) is reached. The mode switches to a.
Table 6-7 Lithium battery parameters
Genset Startup SOC(%)
End-of-Discharge SOC for
Lithium Batteries(%)
Genset Shutdown SOC(%)
Value Range Default Value Value Range Default Value Value Range Default Value
15–30 15 5–15 5 85–100 90
NO TE
● Lithium battery SOC: lithium battery real-time capacity percentage.
● End-of-Discharge SOC for Lithium Batteries(%): In any mode, the ESSs discharge to
the value of End-of-Discharge SOC for Lithium Batteries(%), protecting the batteries.
● Genset Startup SOC(%): The ESSs discharge until the lithium battery SOC is less than
or equal to the value of Genset Startup SOC(%). Then the genset is started to prevent
load
power-o.
● Genset Shutdown SOC(%): The ESSs are charged until the value of Available SOC for
Lithium Batteries(%) is reached. Then the genset is shut down. This reduces the genset
runtime.
iSitePower-M (MAP05A1, MAB05B1)
User Manual 6 Application Scenarios
Issue 06 (2023-04-24) Copyright © Huawei Digital Power Technologies Co., Ltd. 61