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Selecting the energy storage
WARNING!
ABB is not responsible for the energy storage selection or protection of the energy
storage.
The energy storage does not belong to the converter unit delivery. The customer (or the
system integrator) must equip the DC/DC converter with a suitable energy storage system.
The customer (or the system integrator) must also connect parallel modules (if any) to the
same energy storage. Additional guidelines:
•
Dimension the energy storage so that it withstands the required current cycles and the
stored energy is sufficient. Take the depth of discharge into account in energy storage
lifetime calculations.
•
Make sure that the energy storage withstands the current ripple of the converter. See
the technical data.
•
The output voltage (energy storage voltage) is not allowed to exceed the DC/DC
converter DC bus voltage. Add sufficient voltage margin in the design to prevent this in
case of voltage dips or grid faults.
•
The recommended energy storage operating voltage is:
U
storage
= 150 V … 80% of
U
DC
•
Typical DC voltage values:
•
with diode supply units with modules (ACS880-304 +A003, ACS880-304 +A018):
U
DC
= 1.35 ×
U
AC
•
with IGBT supply units with modules (ACS880-204):
U
DC
= 1.41 ×
U
AC
(can be changed with supply unit parameter group
123 DC volt
ref
.
•
where
U
DC
= Drive DC voltage (in the DC bus)
U
AC
= Drive input voltage (AC)
•
We recommend to measure the energy storage voltage. If the energy storage is a super
capacitor, voltage measurement is obligatory unless the capacitor withstands the
maximum DC voltage of the drive or contains internal overvoltage protection.
If the converter is equipped with the optional BAMU voltage/current measurement unit,
the converter measures its output voltage (and thus also the energy storage voltage)
automatically.
If there is no BAMU, you must arrange the voltage measurement separately, and send
the measured value to the converter control program, eg, via a fieldbus communication
(if in use), or by some other means.
For more information, see section
Energy storage voltage measurement and estimation
and parameter description in
ACS880 DC/DC converter control program firmware manual
(3AXD50000024671 [English]).
•
Equip the energy storage with a circuit breaker capable of opening the circuit if there is
a failure in the energy storage or cable. See
Selecting the protective circuit breaker of
and
Energy storage disconnecting device
.
54 Guidelines for planning electrical installation
Summary of Contents for ACS880-1604LC
Page 1: ... ABB INDUSTRIAL DRIVES ACS880 1604LC DC DC converter modules Hardware manual ...
Page 2: ......
Page 4: ......
Page 12: ...12 ...
Page 16: ...16 ...
Page 34: ...34 ...
Page 42: ...Kits for ACS880 1604LC R8i unit in Rittal VX25 cabinets 42 Cabinet construction ...
Page 43: ...Stage 1 Installation of common parts Cabinet construction 43 10 ...
Page 45: ...Stage 3 Module installation parts Cabinet construction 45 10 ...
Page 46: ...Stage 4 DDC and energy storage connection 46 Cabinet construction ...
Page 47: ...Stage 5A DC connection with charging Cabinet construction 47 10 ...
Page 48: ...Stage 5B DC connection without charging 48 Cabinet construction ...
Page 49: ...Stage 6 Cooling components Cabinet construction 49 10 ...
Page 50: ...Stage 7 DDC module and filter installation 50 Cabinet construction ...
Page 51: ...Stage 8 Swing frame and shroud installation Cabinet construction 51 10 ...
Page 58: ...58 ...
Page 72: ...72 ...
Page 124: ...124 ...
Page 138: ...138 ...
Page 148: ...148 ...
Page 150: ...R8i DC DC converter module 150 Dimension drawings ...
Page 151: ...BDCL filter module Dimension drawings 151 ...
Page 152: ...Quick connector 152 Dimension drawings ...
Page 153: ...BCU control unit Dimension drawings 153 ...
Page 154: ...BAMU voltage current measurement unit Dimensions in mm 1 mm 0 0394 in 154 Dimension drawings ...