Component Identification - gefran SIEIDrive AVy Series Quick Start Up Manual

3.2. 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.
1 AC Input supply voltage
2 AC Mains choke
3 Three-phase rectifier bridge
4 DC intermediate circuit
5 IGBT inverter
6 Configurable control section
7 Output voltage:
8 Encoder
——— Inspection procedure, component identification and standard specification ———
Figure 3.2.1: Basic Setup of Frequency Inverter
(see section 5.7.1)
Converts the alternating current into direct current using a
three phase full wave bridge.
With charging resistor and smoothing capacitor.
Direct voltage (U
Converts direct voltage to a variable three-phase alternating
voltage with variable frequency.
Modules for open-loop and closed-loop control of the
power section. This is used for processing control
commands, reference values and actual values.
Three-phase, variable alternating voltage.
For speed feedback (see section 4.4.2).
) = √2 x Mains voltage (U
DC
)
LN
41 Ch.3