The Pqf Current Generator Hardware - ABB PQFS Installation, Operation And Maintenance Instructions

Up to 4 PQFS master panels can be connected in parallel providing full redundancy to
the customer.
In addition to using master panels only, PQFS units can be connected in a master-slave
arrangement.
4.3

The PQF current generator hardware

The power circuit of a PQFS unit is represented hereafter.
The description of the main components is given in
L
N
8
Output filter
Figure 14: Power circuit diagram of a PQFS active filter
Table 5: Main components of a PQFS active filter
Item Main components
1 IGBT inverter
2 DC bus capacitors
3 PWM reactor
4 Output filter
5 Preload resistor
6 Main contactor
7 Auxiliary fuses
8 Neutral cable connection (not mandatory)
AC power supply
7
4
Preload
resistor
6
3
2
IGBT
1
Inverter
Master Unit
Table
Manual Power Quality Filter PQFS ç Hardware description 17
L
N
5
5.