GEFRAN-SIEI ARTDrive Vector V2 Series - Component Identification

18 • Chapter 2 Inspection Procedure,... ARTDrive V2 series - Instruction Manual
2.2 Component Identification
An AVy Drive converts the constant voltage and frequency of a three-phase
power supply into a direct voltage and then converts this direct voltage into a
new three-phase power supply with a variable voltage and frequency. This variable
three-phase power supply can be used for the infinitely variable adjustment of
the speed of three-phase asynchronous motors.
Figure 2.2.1: Basic Setup of Frequency Inverter
1
2
3
4
5
6
7
8
1 AC Input supply voltage
2 AC Mains choke (see section 4.7.1)
3 Three-phase rectifier bridge Converts the alternating current into
direct current using a three phase full
wave bridge.
4 DC intermediate circuit With charging resistor and smoothing
capacitor.
Direct voltage (U
DC
) = √2 x Mains
voltage (U
LN
)
5 IGBT inverter Converts direct voltage to a variable
three-phase alternating voltage with
variable frequency.
6 Configurable control section Modules for open-loop and closed-loop
control of the power section. This is
used for processing control commands,
reference values and actual values.
7 Output voltage: Three-phase, variable alternating
voltage.
8 Encoder For speed feedback (see section 3.4.2)