Motor-Side Power Components; Sinusoidal Filter; Description - Siemens SINAMICS S120 Equipment Manual

Motor-Side Power Components

6.1

Sinusoidal Filter

6.1.1

Description

If a sinusoidal filter is connected to the output of the Power Modules or Motor Modules, the
voltage between the motor terminals is virtually sinusoidal. This reduces the voltage load on
the motor windings and prevents motor noise that would be induced by the pulse frequency.
Sinusoidal filters with an output of up to 200 kW are available.
The pulse frequency of the Power Modules or Motor Modules must be set to 4 kHz for the
sinusoidal filters. This reduces the output current of the Power Modules or Motor Modules
(see section 3.7.2.4 or 5.6.2.4)
When a sinusoidal filter is used, the available output voltage decreases by 15%.
Fig. 6-1
Chassis Power Units Liquid Cooled
SINAMICS S120 Equipment Manual, Edition 12/2007, 6SL3097-2AM00-0BP4
Sinusoidal filter
6
6-1