High power systems operating from 3-phase alternating current source increasingly require low
input current harmonic distortion. Limits on total input current harmonic
distortion and or individual harmonics are specified in later versions of DO-160
for commercial aerospace and military standards for shipboard power; power
factor limits are imposed by additional military and commercial specifications.
For systems or applications where the load approaches the source capacity, it is
often required to impose strict harmonic limits, even when not required by
regulation, to allow the source to maintain sufficient voltage waveform quality
for other systems to operate.
Crane Aerospace & Electronics provides superior products for applications
demanding high power quality based on both passive and active solutions. Active
(switching conversion) approaches are preferred, either where regulation is
required or source frequency is 50/60 Hz, or both. Passive solutions, ATRU’s,
can achieve similar weight and volume to active solutions where the source
frequency is higher, e.g., 400 Hz, and are generally preferred in these
applications due to their simplicity and robustness.
Our 3-phase active power factor correction products are available in power
levels ranging from 1 to 15 kW as individual converters and > 60 kW when
paralleled as a sub-system.
115 or 230 V ac line-neutral (Y), 230 or 460
V ac line to line (D) 3-phase input
Boost or buck configurations; outputs higher or lower than would result from
Power levels from 1 to 15 kW for a single module
Parallel capability to > 90 kW
Efficiency > 96%
Conduction cooled and flow through liquid cooled versions
Front-end stage for regulated dc power distribution in racks or platforms
AC-DC interface for motors / actuators
Powering EW and radar systems