TIDUF31B May   2023  – September 2024

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Key System Specifications
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
    3. 2.3 Highlighted Products
      1. 2.3.1 MSPM0G1507
      2. 2.3.2 UCC28881
      3. 2.3.3 UCC27712
      4. 2.3.4 TLV9064
      5. 2.3.5 TPS54202
  9. 3System Design Theory
    1. 3.1  High-Voltage Buck Auxiliary Power Supply
    2. 3.2  DC Bus Voltage Sensing
    3. 3.3  Motor Drive Stage
    4. 3.4  Bypass Capacitors
    5. 3.5  Phase Current Sensing With Two or Three Shunt Resistors
    6. 3.6  Phase Current Sensing With a Single Shunt Resistor
    7. 3.7  Hall-Effect Sensor or QEI Interface for Sensored Motor Control
    8. 3.8  DAC for Software Debug
    9. 3.9  Overcurrent Protection
    10. 3.10 Overtemperature Protection
    11. 3.11 Isolated UART port
    12. 3.12 Inverter Peak Power Capability
  10. 4Hardware, Software, Testing Requirements, and Test Results
    1. 4.1 Hardware Requirements
      1. 4.1.1 Hardware Board Overview
      2. 4.1.2 Test Equipment for Board Validation
    2. 4.2 Software Requirements
      1. 4.2.1 Getting Started MSPM0 Firmware
        1. 4.2.1.1 Download and Install Software Required for Board Test
        2. 4.2.1.2 Import the Project Into CCS
        3. 4.2.1.3 Compile the Project
        4. 4.2.1.4 Download Image and Spin Motor
    3. 4.3 Test Results
      1. 4.3.1 Test Setup
      2. 4.3.2 Auxiliary Power Supply Test
      3. 4.3.3 Current Open Loop Test
      4. 4.3.4 Overcurrent Protection Test
      5. 4.3.5 Motor Start-Up Sequence
      6. 4.3.6 Load Test
    4. 4.4 Migrate Firmware to a New Hardware Board
      1. 4.4.1 Configure the PWM, CMPSS, and ADC Modules
      2. 4.4.2 Motor and Control Parameters Tuning
  11. 5Design and Documentation Support
    1. 5.1 Design Files
      1. 5.1.1 Schematics
      2. 5.1.2 BOM
    2. 5.2 Tools
    3. 5.3 Documentation Support
    4. 5.4 Support Resources
    5. 5.5 Trademarks
  12. 6About the Author
  13. 7Revision History

4.2.1.3 Compile the Project

The Sensorless-foc project for TIDA-010250 is now active. Click the Build button or select the Project → Build Project menu, the .out file is now generated after the compilation is finished. Figure 4-5 shows the resulting project build.

TIDA-010250 Build Project Figure 4-5 Build Project

Now open the ISR.c file to check motor parameters, see the register map section in the Sensorless FOC Motor Control User Guide, this guide is found in the MSPM0 SDK folder:

<install_location>\ti\mspm0_sdk_2_01_00_03\docs\english\middleware\motor_control_bldc_sensorless_foc

Figure 4-6 shows file location.

TIDA-010250 Folder for Sensorless FOC Motor Control User Guide Figure 4-6 Folder for Sensorless FOC Motor Control User Guide

This design guide introduces all the registers for the FOC algorithm, the designer can also add or remove some special functions of FOC using those registers. Figure 4-7 shows the register map.

TIDA-010250 Register Map Figure 4-7 Register Map

Motor and control parameters are found in ISR.c, which can be updated per the motor and system of the user. The parameters for motor EMJ_04APB22, unit of each parameter are shown below. For more information, see the MSPM0 Sensorless FOC Tuning Guide application note.

pUserInputRegs->systemParams.mtrResist = 2627; // Rs(mR)
pUserInputRegs->systemParams.mtrInductance = 8608; // Ls(uH)
pUserInputRegs->systemParams.mtrBemfConst = 3779; // 10*BEMP, BEMF(mVpHz)
pUserInputRegs->systemParams.voltageBase = 258.6; // Vbase(V)/sqrt(3)
pUserInputRegs->systemParams.currentBase = 8.25; // Ibase(A)
pUserInputRegs->systemParams.maxMotorSpeed = 200; // Maximum Speed(Hz)
pUserInputRegs->systemParams.speedLoopKp = 0.0539; // Speed Loop Kp
pUserInputRegs->systemParams.speedLoopKi = 0.036; // Speed Loop Ki
pUserInputRegs->systemParams.currLoopKp = 3.42; // Current Loop Kp
pUserInputRegs->systemParams.currLoopKi = 3678; // Current Loop Ki

After update motor and control parameters, click the Compile button, no error information and the .out file are created in the Console window, see Figure 4-8.

TIDA-010250 EMJ_04APB22 Motor Parameters and Compile Results Figure 4-8 EMJ_04APB22 Motor Parameters and Compile Results