Huawei PV+ESS+Charger Solution - Page 32

Table 2-5 E
xample of single-phase charging power (Max Charging Power
from Grid ≥ 1.38 kW)
Surplus PV Power (a) Max Charging Power
fr
om Grid (b)
Actual Charging
Power (a or b,
Whichever is Larger)
3 2 3 (PV)
1.5 2 1.5 (PV) + 0.5 (grid)
0.5 2 0.5 (PV) + 1.5 (grid)
0 2 2 (grid)
T
able 2-6 Example of single-phase charging power (Max Charging Power
from Grid < 1.38 kW)
Surplus PV Power (a) Max Charging Power
fr
om Grid (b)
Actual Charging
Power (a or b,
Whichever is Larger)
3 0–1.38 3 (PV)
1.5 0–1.38 1.5 (PV)
1.4 0–1.38 1.4 (PV)
1.3 0–1.38 Charging stops (if a or
b, whichever is larger, is
less than 1.38 kW).
●
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 char
ging 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.
PV+ESS+Charger Solution
User Manual 2 Solution Overview
Issue 02 (2023-01-13) Copyright © Huawei Technologies Co., Ltd. 26