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9.3.2.3
Advanced efficiency optimization (method 2)
The advanced efficiency optimization generally achieves a better efficiency than the basic
efficiency optimization. With this technique, the actual motor operating point is determined as
a function of the efficiency and flux - and the flux is set to achieve the optimum efficiency.
Depending on the motor operating point, the inverter either decreases or increases the flux
in partial load operation of the motor.
Advanced efficiency optimization with flux
The advanced efficiency optimization is deactivated in the factory setting.
To activate advanced efficiency optimization, set p1401.14 = 1.
9.3.2.4
Function diagrams, parameters
Function diagrams
FP 6722
FP 6723
Parameters
• r0077
• r0331
• p1401
• p1570
• p1580
• p1582
Enclosed Drives
Operating Instructions, 12/2018, A5E36652151A
reduction
Field weakening characteristic, Id setpoint (ASM, p0300 = 1)
Field weakening controller, flux controller for induction motor (p0300 = 1)
Current setpoints, torque-generating
Motor magnetizing current/short-circuit current (actual)
Flux control configuration
Flux setpoint
Efficiency optimization
Flux setpoint smoothing time
Functions, monitoring and protective functions
Advanced efficiency optimization with flux
reduction
9.3 Drive functions
515
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