Filter
Top Products
8
2.2 System Description
The UPS is connected between the public utility mains and
the loads to be protected.
The power section of the rectifier converts the mains voltage to
DC voltage for supplying the inverter. The circuit technology
used (PFC) enables sinusoidal current consumption and
therefore operation with little system disturbance. A separate,
second rectifier (charging REC set up using switch mode power
supply technology) is responsible for charging or trickle-charging
the battery connected in the intermediate circuit. The
configuration of this charging REC means the harmonic content
of the charging current for the battery is almost zero, which
increases the service life of the battery even more. The inverter
is responsible for converting the DC voltage into a sinusoidal
output voltage. A microprocessor-driven control based on a
pulse-width modulation (PWM) guarantees, in conjunction with
digital signal processor technology and extremely fast pulsating