changing current and voltage rating along with current protection in B-G431B-ESC1 firmware

[madhavP]

Hi,

 

[PN]: B-G431B-ESC1
[VERSION]: MCSDK 6.3.0
[TOOL]: STM32CubeIDE 1.16.1, MotorControl Workbench 6.3.0

[DETAILS]:
I am designing a custom motor controller based on the B-G431B-ESC1 board. I have modified the power stage and current sensing hardware to support higher current and voltage ratings (targeting 100A and 100V). I am using MCSDK-generated firmware with FOC (Field-Oriented Control). However, I am having difficulty identifying which sections of the firmware or configuration files handle the over-current and over-voltage protection thresholds.

[EXPECTED BEHAVIOUR]:
Update the firmware so that the current, voltage, and protection ratings match my modified hardware specifications (100A current rating and 100V voltage rating).

[HOW TO REPRODUCE]:

1. Create a new project using Motor Control Workbench targeting B-G431B-ESC1.

2. Replace the power stage and current sensing components to support 100A and 100V.

3. Attempt to locate and modify the firmware-level protection thresholds.

I am looking for guidance on:

• Which firmware files or parameters should be modified for over-current and over-voltage protection?

• Whether any Motor Control Workbench configuration or regeneration is needed.

• How to ensure the protection settings align with the new hardware design.

I would really appreciate your insights or any documentation references that can help with this.

 

Regards

Madhav

[GMA]

Hello @madhavP,

You can use STMC Board Designer tool (embedded on MSCK delivery) to create your custom board. 
Clone the B-G431B-ESC1 as starting point and update the parameters max current/voltage, Hardware Variant for Current Sensing (gain, shunt resistor, etc...). 
Your customer board will be then available on MC Workbench tool.

[madhavP]

Hi,

Thank you for your reply. Can you please provide me steps to do so?

Regards,

Madhav

[GMA]

Hello @madhavP,

You can refer on ST provided Power boards or Inverter boards what components have been used for Voltage/Current/Power targets close to yours.