99
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Chapter 1 - Welcome
9.5.4 - Battery Pack Round-Trip (Charging & Discharging)
Efficiency
The battery pack manufacturer provides the round-trip efficiency related to battery pack
output; however, the SolarCity H6 inverter includes electronics that contribute to RF
efficiency, as shown in
Figure 9-4
and
Figure 9-5
.
Figure 9-4: Battery pack charging efficiency
Figure 9-5: Battery pack discharging efficiency
90.00
90.25
90.50
90.75
91.00
91.25
91.50
91.75
92.00
92.25
92.50
92.75
93.00
93.25
93.50
93.75
94.00
94.25
94.50
94.75
95.00
95.25
95.50
95.75
96.00
96.25
96.50
96.75
97.00
97.25
97.50
97.75
98.00
98.25
98.50
98.75
99.00
99.25
99.50
99.75
100.00
200 500 800 1100 1400 1700 2000 2300 2600 2900 3200 3500 3800 4100 4400 4700 5000
Eĸciency [%]
Pout [W]
Eĸciency - 200V PV to DC Charge Direc on
90.00
90.25
90.50
90.75
91.00
91.25
91.50
91.75
92.00
92.25
92.50
92.75
93.00
93.25
93.50
93.75
94.00
94.25
94.50
94.75
95.00
95.25
95.50
95.75
96.00
96.25
96.50
96.75
97.00
97.25
97.50
97.75
98.00
200 500 800 1100 1400 1700 2000 2300 2600 2900 3200 3500 3800 4100 4400 4700 5000
Eĸciency [%]
Pout [W]
Eĸciency - DC to AC Discharge DirecƟon
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