Huawei iSitePower-M MAP05A1 - Page 74

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When the ESSs are powered on for the rst time and the lithium battery SOC is
greater than the value of Backup Power SOC(%), the PV system and ESSs
supply power to loads, and the ESSs discharge to the value of Backup Power
SOC(%).
i. The mains supplies power to loads. The PV system charges the ESSs
(the ESSs do not supply power to the loads in this case). After the
ESSs are fully charged, the mode switches to ii.
ii. The PV system and the ESSs supply power to the loads. When the
ESSs discharge to the value of Backup Power SOC(%), the mode
switches to i.
b. When the mains is unavailable:
i. The PV system and 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 ii. If the genset
fails to start, after the ESSs discharge to the value of End-of-
Discharge SOC for Lithium Batteries(%), the loads power
o and
the mode switches to iii.
ii. The genset supplies power to loads. At the same time, the genset
and PV system charge the ESSs until the value of Genset Shutdown
SOC(%) is reached. The mode switches to i.
iii. The PV system charges the ESSs (the PV system and the ESSs do not
supply power to the loads) until the value of Available SOC for
Lithium Batteries(%) is reached, and the mode switches to i.
2. Maximize Power Backup:
a. When the mains is available, the mains supplies power to loads, and the
mains and PV system charge the ESSs until the ESSs are fully charged.
b. When the mains is unavailable:
i. The PV system and 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 ii. If the genset
fails to start, after the ESSs discharge to the value of End-of-
Discharge SOC for Lithium Batteries(%), the loads power
o and
the mode switches to iii.
ii. The genset supplies power to loads. At the same time, the genset
and PV system charge the ESSs until the value of Genset Shutdown
SOC(%) is reached. The mode switches to i.
iii. The PV system charges the ESSs until the value of Available SOC for
Lithium Batteries(%) is reached, and the mode switches to i.
iSitePower-M (MAP05A1, MAB05B1)
User Manual 6 Application Scenarios
Issue 06 (2023-04-24) Copyright © Huawei Digital Power Technologies Co., Ltd. 65