Infineon iMotion EVAL-M1-IM523 User Manual page 12

EVAL-M1-IM523 user guide
iMotionTM modular application design kit
System and functional description
The VF Diagnostic sub-function can verify whether the:
o Motor is correctly connected
o IGBT/MOS and gate driver work as expected
o Parameters related to current-sensing are correctly configured
o PCB layout and DC bus decoupling have been done correctly
After the VF Diagnostic is complete, click STOP (the red traffic light button) to stop the PWM (Pulse Width
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Modulation).
Figure 9 Trace waveform for I
Click the green traffic light button in the control bar to start the motor or double-click Start Motor sub-
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function in the Motor1 page "group of User Application Function Definitions." The motor runs when this
step functions properly.
Check the motor-spin direction, adjust the UVW connection order, or set negative target speed in the
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MCEDesigner if the direction is wrong.
Set the target speed to about 50% of the maximum speed and start the I
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Level Mode (see Figure 10.) Flx_M is better within the range of 2000 to 2500 (rated value is 2048), and must
be steady and DC-like.
Some key tips for better motor-performance tuning are:
If Flx_M is not steady (i.e. swinging or oscillating), double-check the motor parameters, speed loop
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Propotional-Intergra (PI) gain, flux estimator time constant, and the setup related to the PLL PI
bandwidth (parameters PLLKp and PLLKi).
If Flx_M is noisy, double-check the current feedback, and the hardware and parameters related to V
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If Flx_M is far from 2048, adjust the Motor Back EMF Constant (Ke) in the MCEWizard.
•
& I open loop diagnostic
u v
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& Flx_M trace with Auto Repeat on
u
.
DC
Revision 1.00
2023-01-16