Description of the Software Modules and Parameters
Parameter manual b maXX BM5800
Document No.: 5.16029.03
471
of 814
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47.23 Integral term Usd
Displays the integration terms of the control variable for the id controller.
47.24 Usq control output
Output value of the PI current controller.
47.25 Usd Control Output
Output value of the PI current controller.
47.26 Back-EMF feedforward
Displays the voltage set value from the BACK-EMF feedforward.
This results from the speed actual value (Z18.22–), the motor voltage constant ("Ke fac-
tor" Z107.20–) and the flux set value Z146.13–.
The exact correlation between the speed actual value and the EMF feed forward is shown
in adaption EMF feed forward (
ZFig. 132– on page 504)
At the stator flux-oriented encoderless control of the asynchronous motor this parameter
has no effect on the EMC-feedforward and has an informative purpose, only.
47.27 U Alpha set value
Real part of the control variable for the current controller in stator frame coordinates be-
fore dead time compensation.
The unit of the parameter is [V], phase-to-phase voltage effective.
47.28 U Beta set value
Imaginary part of the control variable for the current controller in stator frame coordinates
before dead time compensation.
The unit of the parameter is [V], phase-to-phase voltage effective.
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