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14 Operation principle and hardware description
Single-line diagram of the drive system
The diagram below shows a typical common DC link drive system.
3
2
1
1
AC supply
2
Input (AC) fuses
3
Supply unit. In this example, the supply unit consists of one supply module.
4
DC link
5
Inverter DC fuses
6
Inverter units. In this example, one of the units consists of two inverter modules connected in
parallel.
7
Brake chopper DC fuses
8
Attenuator
9
Brake chopper
10
Brake resistors
11
Motors
4
5
6
M
11
7
6
M
8
9
10
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