Huawei PV+ESS+Charger Solution User Manual page 32

PV+ESS+Charger Solution
User Manual
●
Issue 02 (2023-01-13)
Table 2-5 Example of single-phase charging power (Max Charging Power
from Grid ≥ 1.38 kW)
Surplus PV Power (a)
3
1.5
0.5
0
Table 2-6 Example of single-phase charging power (Max Charging Power
from Grid < 1.38 kW)
Surplus PV Power (a)
3
1.5
1.4
1.3
The minimum charging power of a three-phase charger is about 4.14 kW*.
– To improve PV energy utilization rate, if a vehicle has both three-phase
and single-phase charging capabilities, the three-phase charger can use
the single-phase and three-phase switching function. When the charging
power of the three-phase charger decreases to less than 4.14 kW, the
charger automatically switches to single-phase charging.
– You are advised to set Max Charging Power from Grid of the three-
phase charger to a value greater than 1.38 kW when the single-or three-
phase switching is enabled and to a value greater than 4.14 kW when the
single-or three-phase switching is disabled. Otherwise, charging will be
interrupted when the PV power is low.
NO TE
● Note*: The minimum operating current of a charger is 6 A. When the voltage is 230 V,
the charging power of a single-phase charger is 1.38 kW, and that of a three-phase
charger is 4.14 kW.
● The following uses a single-phase charger as an example: The default values of Surplus
Power to Start Charging and Max Charging Power from Grid are 1.4 kW. If the
voltage is high, increase the values based on the actual voltage. Otherwise, if the actual
voltage is greater than 230 V, the operating current of the charger is less than 6 A at the
default values and charging will stop.
Copyright © Huawei Technologies Co., Ltd.
Max Charging Power
from Grid (b)
2
2
2
2
Max Charging Power
from Grid (b)
0–1.38
0–1.38
0–1.38
0–1.38
2 Solution Overview
Actual Charging
Power (a or b,
Whichever is Larger)
3 (PV)
1.5 (PV) + 0.5 (grid)
0.5 (PV) + 1.5 (grid)
2 (grid)
Actual Charging
Power (a or b,
Whichever is Larger)
3 (PV)
1.5 (PV)
1.4 (PV)
Charging stops (if a or
b, whichever is larger, is
less than 1.38 kW).
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