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Over Current SW Fault with HSO [High Sensitivity Observer (Sensorless)]

riteshEDC
Associate

Hi,

Currently I am evaluating HSO [High Sensitivity Observer (Sensorless)] in our custom Inverter board () with B-MOTOR-PMSMA1 motor. But when I start the motor it jerks and giving Over Current SW Fault

Our custom board has following key components.

  1. Infineon 6ED2230S12TXUMA1 gate driver
  2. MCS1806GS-3-30-Z Current sensor 

riteshEDC_0-1768546496629.png

riteshEDC_1-1768546641841.png

riteshEDC_2-1768546697966.pngriteshEDC_3-1768546745168.pngriteshEDC_4-1768546771016.png

 

The same inverter board with B-MOTOR-PMSMA1 motor is working for Observer + PLL configuration. 

I suspect that this board is having current sensor with ± 37.5 A measurement range designed for higher wattage motor giving fluctuation/slow response for  B-MOTOR-PMSMA1 motor with 2.8A current rating.

Please help me to identify root cause of update project configuration to make it run with B-MOTOR-PMSMA1.

Attached following items for your reference.

  1. W30_SLIM_EVKMotor_HSO.stwb6 [MC Workbench config file]
  2. W30_SLIM_305_3IC_v4.json [HSO Inverter Board Designed File]
  3. W30_SLIM_305_3IC_v2.json [PLL Inverter Board Designer File]
  4. W30_SLIM_EVKMotor_PLL.stwb6 [PLL MC Workbench Config File]

Our end goal is to run Higher watt motor with our custom board. But first we need to understand HSO before and its tuning with smaller motor. 

 

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