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.
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①
Measuring resistors
②
AVT combination module
③
Transformer for protective separation
④
Voltage limitation
⑤
80 kHz power supply
Figure 3-6
Overview of the voltage sensing circuit
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).
Description
3.4 Closed-loop control
SINAMICS SL150 6SL38655UM427AA02
Operating Instructions Rev.201910281507 EXAMPLE
31
Содержание SINAMICS SL150 6SL38655UM427AA02
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