IHM023V2: FOC duration fault

[tomtom9197]

Posted on February 07, 2013 at 14:11

Hardware: STEVAL-IHM023V2 + STM32100B-EVAL + custom motor

Configuration: High-voltage 3-phase PMSM, IAR 6.50.2.4585, STM32 PMSM FOC Firmware Library v3.2 - WEB distribution I'm trying to get started with the example IAR project from the FOC firmware STM32F10x_Workspace.eww. Serial connection via Motor Control Workbench is running, I can see valid bus voltage and temperature. If I click the ''Start Motor'' button I can hear a soft click noise (it's not the relay of the inrush cuurent limit relay) and get the error status FOC duration fault. I use single shunt configuration because Motor Control Workbench says: ''Current sensing three shunt technique is not supported  by STM32F100 medium density.'' What's going wrong here? Thank you for any hints. #foc-stm32100b-ihm023v2-sdk3.2

[Gigi]

Posted on February 25, 2013 at 09:22

Ciao Sciro,

Probably the FOC duration fault is raised because you set in the STMC workbench a FOC execution rate that exceed the STM32F100 capabilities. Usually you have to set a FOC repetition rate that is below the 11 kHz using the STM32F100 microcontroller. The FOC execution rate is the combination of two parameters: the PWM frequency and the Torque and flux regulators Execution rate present in the Drive Management - Drive Setting sections. You have to divide the PWM frequency by the Execution rate to know the actual FOC execution rate. So I think that lowering the PWM frequency or increasing the Execution rate you can get an admissible value for the STM32F100. Ciao Gigi 

[Laurent Ca...]

The question has been moved from the section "Motor Control Hardware" to the "STM32 Motor Control" section (the question is about the STM32 MC SDK). 

Best regards