Identification IGBT parameters
Difference of the model parameters identified by the inverter,
compared to the values from the power unit data (de80[7...9])
If an error occurs during the identification of the IGBT model parameters, this error
is displayed in dr57 ident error info.
9: searching reached limit (Dt, Rs)
The parameter search of the IGBT model for the dead time compen-
sation has reached a value range limit.
6.2.19.4 Dead time compensation - options
6.2.19.4.1 Weakening
"Undercompensation" of the dead time is sometimes reasonable for open-loop op-
eration (v/f). This is caused by coupling effects, which may result from a current off-
set of the measurement, for example.
In this case, the compensation can be optimized with the safety factor.
The factor is effective only in combination with the use of the IGBT model (factory
setting or identified).
Identification IGBT parameters
The compensation can be weakened with this factor.
100% corresponds to full compensation.
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