System description 29
Fieldbus control
Fieldbus control of the grid-side converter is performed via the rotor-side converter NDCU
control unit. The principle of reference and actual value chains in the control are shown in
the diagram below. For details, see
ACS800-67(LC) doubly-fed induction generator control
program firmware manual
[3AUA0000071689 (English)].
WTC
Converter controllers
Rotor-side converter
Reactive power reference/
Power reference
Torque reference
Grid-side converter
Reactive power reference
DC voltage reference
Reactive power actual value
Power actual value
Torque actual value
Reactive power actual value
Actual power
Speed actual value
CW
SW
CW
SW
Faults
Alarms
voltage reference
Summary of Contents for ACS800-67
Page 4: ......
Page 76: ...76 Start up with medium voltage stator ...
Page 99: ...Practical examples 99 1 4 4 3 2 5 6 7 ...
Page 106: ...106 Practical examples Counterclockwise rotation at drive end D end Power cabinet Encoder ...
Page 118: ...118 Tracing the source of warnings limits and faults ...
Page 120: ...Contact us www abb com windconverters 3AUA0000095094 Rev B EN 2017 12 31 ...