Other Parts Discussed in Thread: MOTORWARE
We use TMS320F28069F-Q1 control board to control a new delta connected permanent magnet synchronous motor. The motor parameters are as follows
Stator Resistance(phase to phase):1.017mΩ;Stator Inductance (phase to phase)5.7uH
Maxspeed:5000rpm;Number of Pole Pairs:7;Rated current:350A;The open circuit back EMF@5000rpm:21V, DC Bus Voltage:28V
We running full identification of PMSM motors。The parameters related to the identification process are set as follows;
MotorType:1
MotPolePairs:7
MotMagnetizingCurrent:0
MotResEstCurrent:40
MotIndEstCurrent:10
MotorMaxCurrent:200
MotorFluxEstFreqHz:90
Overcurrent value of motor phase:240
When the identification of the state resistance is executed, The motor phase current exceeds “Overcurrent value of motor phase” threshold(The actual phase line current reaches 400A). Identification process stop. We reduce "motresestcurrent", The same overcurrent fault occurs in EST_ State_ RampUp.
We want to know the cause of the failure and what improvements should be made
Thank you very much!!