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10
3.2
SYSTEM DESCRIPTION
3.2.1
RECTIFIER
It converts the three-phase voltage of the AC mains into continuous
DC voltage. It uses a three-phase fully-controlled IGBT bridge with a low
harmonic absorption.
The control electronics use a 32 bit µP of latest generation that allows
reduction of the distortion of the current absorbed by mains (THDi) to
less than 5 %. This ensures that the rectifier does not distort the supply
mains, with regard to the other loads. It also avoids cable overheating
due to the harmonics circulation.
The rectifier is so sized as to supply the inverter at full load and the
battery at the maximum charging current.
3.2.2
INVERTER
It converts the direct voltage coming from the rectifier or from the DC
battery into alternating AC voltage stabilized in amplitude and frequency.
The inverter uses IGBT technology with a high changeover frequency of
approximately 15 KHz.
The control electronics use a 32 Bit µP of latest generation that, thanks
to its processing capability, generates an excellent output sine-wave.
Moreover, the fully digital control of the output sine-wave allows you to
achieve high performance, alongside a very low voltage distortion even
in the presence of high-distorting loads.
OMD94016 REV. C
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