Page 29 - Parker - AC890/AC890PX series

High Power Modular AC Drive

AC890PX Series
150 - 600 HP/110 - 400kW

Alternative Input Power Configurations

Active Front-End (AFE) Version - Energy regeneration with low harmonic distortion

• Fully line regenerative drive
• Continuous duty at full torque - motoring
Input or braking
Power • Negligible power line harmonics - meets
Entry AC890 control IEEE519
modules • Unity power factor
• Compact 3 bay (1600 mm) enclosure
Motor
AFE Inverter • Grid Tie models also available
Power Power
Frame Active
LCL Frame Bridge Inverter
Harmonic LCL Filter
Line
Filter Motor Power M
Connections

POWER FLOW

The modular design of the AC890PX makes it easy to configure parallel input modules and multi-phase configurations. By using 12-pulse
or 18-pulse configurations, harmful line harmonics can be greatly reduced. Or, for the ultimate in harmonic abatement, an Active Front
End (AFE) may be selected. The typical AC drive has six rectifiers in a three phase bridge configuration, and is commonly referred to as a
“6-pulse” configuration. A 12-pulse drive contains two sets of six rectifiers, an 18-pulse drive, three sets of six rectifiers and so on. If the AC
power connected to each set of rectifiers is “phase shifted”, then some of the harmonics produced by one set of rectifiers will be opposite
in polarity from the harmonics produced by the other set of rectifiers. The two (or three) wave forms effectively cancel each other out. To
provide the phase shifted AC power, a transformer with multiple secondary windings is used.

Alternative Input Supplies Active Front End (AFE)

4-Quadrant Regenerative
12-Pulse Input 18-Pulse Input Drive with AFE
(Customer supplied transformer) (Customer supplied transformer) (LCL filter included)

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