Dc Voltages And Maximum Power Point Tracking - ABB PRO-33.0-TL Service Manual

5 Available power is less than the inverter's power limit
P < P
act lim
6 Inverter disabled (parameter
OR fault
OR grid unstable
OR VDC low
OR VDC > VDC
OR FRT overshoot
7 No monitoring mode (parameter
AND VDC < VDC
AND Control unit screensaver active
AND No events active
8 Inverter disabled (parameter
OR fault
OR grid unstable
OR VDC < VDC

DC voltages and maximum power point tracking

The following picture visualizes the operational voltage ranges of the PRO-33.0.-TL
inverter. The input operation voltage range depends on the AC voltage and it is between
580 and 950 volts when the AC voltage is nominal 400 V
P
max
Derating
range
550 V
580 V
•
MPPT range @ P
•
MPPT range = maximum power tracking range, power may be derated.
•
Start range = Input voltage range where inverter may start
Start range
The inverter starting range is between 610 V and 1000 V. The minimum startup voltage
depends linearly on AC voltage. 610 V is valid at nominal AC voltage 400 V
voltage at start is greater than 950 V, it is regulated down to 950 V where tracking is
started.
189.01 Inverter
max
189.07 Night
sleep
189.01 Inverter
start
MPPT range @ P
AC, rated
MPPT range
Start range
610 V
VDC start@ VAC= 400 V
Vmppt min@ VAC > 400 V
Vmppt min@ VAC = 400 V
Vmppt min@ VAC < 400 V
Par 178.3 MPPT Voltage Min
= maximum power available with tracking, no derating
AC, rated
operation)
mode)
operation)
.
AC
Vmppt,max Vmax,operating
850 V 1000 V
Vdc,ref,max
950 V
Par 178.4 MPPT Voltage max
Program features 15
Fault "DC
Warning "DC
overvoltage"
overvoltage"
Inverter may be
Grid
damaged.
connection is
not allowed.
Non-operating
Forbidden area
range
Vmax = 1100 V
. If the
AC
U