Fig. 5. Switching Levels; Fig. 6. Principle Of 9-Level Topology; Fig. 7. Igct - ABB ACS5000 User Manual

VSI-MF
The VSI design employs DC-link capacitors and provides a switched voltage waveform. As a
result of the multilevel topology, the drive produces an optimum number of switching levels, ie,
9 levels, phase to phase. The resulting output waveform permits the application of standard
motors without decreasing the reliability and efficiency of the motor.
5
10000 V
4
3
5000 V
2
1
- 5000 V
- 10000 V

Fig. 5. Switching levels

15000
4
5
10000
5000
1
0
-5000
-10000
3
-15000
Key:
(1) Volts
(2) Amps
(3) 50 Hz operation point
(4) Voltage
(5) Current

Fig. 6. Principle of 9-level topology

IGCT
Integrated gate-commutated thyristors (IGCT) are used as switching devices in the inverter
section of the phase converter units. IGCTs combine fast switching capabilities with low losses
and enable a drive design with a low parts count.

Fig. 7. IGCT

PRODUCT
ACS5000W gen. 2
6
7
8
9
2
DOCUMENT KIND
User manual
POWER ELECTRONICS AND CABINET FEATURES
2000
1500
1000
500
0
-500
-1000
-1500
-2000
DOCUMENT ID.
3BHS799208 E01
REV. LANG. PAGE
J en 31/186