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SINE SAVER User's Manual
Introduction
SINE SAVER is a regenerative converter (active rectifier). Sine Saver may be used alone as a high
quality reactive power compensator or in conjunction with other equipment to transfer power between AC
and DC systems in both directions, at any desired power factor on the AC side. The AC side line currents
are near perfect sine waves.
Applications
Typical Sine Saver applications include:
Ultra low harmonic rectifier for AC motor inverters or similar equipment
Line side converter for 4Q AC motor inverters
Alternative energy systems
Energy recovery from DC systems (eg railways)
Reactive power compensation - power factor COS(Ø) correction
Line voltage stabilization for weak distribution lines (eg rural areas)
Operating modes
In order to accommodate a wide range of applications, Sine Saver can be programmed to achieve the
following :
DC link voltage regulator (AC line ç , è DC link)
Ultra low harmonic rectifier for AC motor inverters or similar equipment
4Q AC motor control inverters for elevators, hoists, high inertia industrial applications (centrifuge
etc)
Reactive power compensator (AC line)
Reactive power compensator - power factor COS(Ø) correction
AC line voltage regulation - can be used to stabilise the voltage of weak electricity distribution
lines in rural areas at a much lower cost and better performance than re-building the distribution
line.
Energy recovery converter (DC link è AC line)
Alternative energy systems
Energy recovery from DC systems (railways)
Applications with multiple AC motor drives on a common DC link
Surplus capacity can be used for power factor correction in any mode
Note: Regulation of the DC link voltage is an essential part of all operating modes and is always active.
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