ABB ACS880-77CC, Hardware Manual

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Operation principle and hardware
description
Contents of this chapter
This chapter describes the operation principle and the construction of the wind turbine
converter.
Operation principle
The ACS880-77CC is a four-quadrant, cabinet-mounted combined-cooled converter intended
for full power conversion turbines with an induction generator or a permanent magnet
generator. The converter is connected between the generator stator and the grid. The
converter can be installed up in the nacelle or down on the ground level.
The converter consists of cubicles that contain the grid-side converter modules,
generator-side converter modules, LCL filter, terminals or grid busbars for grid cables and
terminals for generator cables, internal control circuits, external control cable terminals,
auxiliary circuits and external auxiliary power supply terminals.
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