Table of Contents
Advertisement
With the "Thyristor in command window" status checkback signal and the synchronizing
voltage, the offset angle can be determined in a test operation.
The information that can be derived from the correlation between the command and the
generated signals includes:
1. Commutation errors
2. Bridge short-circuit
3. Inverter shoot-through
4. Misfiring
3.3.3.2
Voltage actual value sensing
The voltage actual values are measured using AVT combination modules, whose measuring
resistors are connected in series. This ensures a high degree of measuring accuracy.
①
②
③
④
⑤
Figure 3-6
3.4
Closed-loop control
3.4.1
Description of the components
3.4.1.1
DC/DC converter
DC/DC converters are used to provide a stable and reliable 24 V power supply for the TM15/
TM31 terminal module, the circuit breaker, and the SIMATIC S7 (optional).
SINAMICS SL150 6SL38655UM427AA02
Operating Instructions Rev.201910281507 EXAMPLE
Measuring resistors
AVT combination module
Transformer for protective separation
Voltage limitation
80 kHz power supply
Overview of the voltage sensing circuit
3.4 Closed-loop control
#
Description
31
Advertisement
Table of Contents
