SLAU927B June   2024  – November 2024 MSPM0G3507

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Hardware Setup
    1. 2.1  EVM Hardware Setup
      1. 2.1.1 EVM Hardware Support
    2. 2.2  Pin Configurations for IPD Usage
    3. 2.3  Pin Configurations for PWM Outputs
    4. 2.4  Pin Configurations for ADC Currents
    5. 2.5  Pin Configurations for ADC Voltages
    6. 2.6  Pin Configurations for Faults
    7. 2.7  Pin Configurations for GPIO Output Functions
    8. 2.8  Pin Configurations for SPI Communication
    9. 2.9  Pin Configurations for UART Communication
    10. 2.10 External Connections for Evaluation Boards
  6. 3Software Setup
  7. 4GUI Setup
    1. 4.1 Serial Port Configuration
    2. 4.2 GUI Home Page
    3. 4.3 System Configurations
    4. 4.4 Register Map
    5. 4.5 Motor Tuning Page
    6. 4.6 Collateral Page
  8. 5Register Map
    1. 5.1 Register Map Page in GUI
    2. 5.2 User Control Registers (Base Address = 0x20200400h)
      1. 5.2.1 Speed Control Register (Offset = 0h) [Reset = 00000000h]
      2. 5.2.2 Algo Debug Control 1 Register (Offset = 4h) [Reset = 00000000h]
      3. 5.2.3 Algo Debug Control 2 Register (Offset = 8h) [Reset = 00000000h]
      4. 5.2.4 Algo Debug Control 3 Register (Offset = Ch) [Reset = 00000000h]
      5. 5.2.5 DAC Configuration Register (Offset = 10h) [Reset = 00000000h]
    3. 5.3 User Input Registers (Base Address = 0x20200000h)
      1. 5.3.1  SYSTEM_PARAMETERS (Offset = 0h)
      2. 5.3.2  ISD_CONFIG Register (Offset = 38h) [Reset = 00000000h]
      3. 5.3.3  RVS_DRV_CONFIG Register (Offset = 3Ch) [Reset = 00000000h]
      4. 5.3.4  MOTOR_STARTUP1 Register (Offset = 40h) [Reset = 00000000h]
      5. 5.3.5  MOTOR_STARTUP2 Register (Offset = 44h) [Reset = 00000000h]
      6. 5.3.6  CLOSED_LOOP1 Register (Offset = 48h) [Reset = 00000000h]
      7. 5.3.7  CLOSED_LOOP2 Register (Offset = 4Ch) [Reset = 00000000h]
      8. 5.3.8  FIELD_CTRL Register (Offset = 50h) [Reset = 00000000h]
      9. 5.3.9  FAULT_CONFIG1 Register (Offset = 54h) [Reset = 00000000h]
      10. 5.3.10 FAULT_CONFIG2 Register (Offset = 58h) [Reset = 00000000h]
      11. 5.3.11 MISC_ALGO Register (Offset = 5Ch) [Reset = 00000000h]
      12. 5.3.12 PIN_CONFIG Register (Offset = 60h) [Reset = 00000000h]
      13. 5.3.13 PERI_CONFIG Register (Offset = 64h) [Reset = 00000000h]
    4. 5.4 User Status Registers (Base Address = 0x20200430h)
  9. 6Basic Tuning
    1. 6.1 System Configuration Parameters
      1. 6.1.1 Configuring System Parameters from GUI
      2. 6.1.2 Motor Resistance in Milliohms (mΩ)
      3. 6.1.3 Motor Inductance in Microhenries (μH)
      4. 6.1.4 Saliency of IPMSM Motor
      5. 6.1.5 Motor BEMF Constant
      6. 6.1.6 Base Voltage (V)
      7. 6.1.7 Base Current (A)
      8. 6.1.8 Maximum Motor Electrical Speed (Hz)
    2. 6.2 Control Configurations for Basic Motor Spinning
      1. 6.2.1 Basic Motor Startup
        1. 6.2.1.1 Disable ISD
        2. 6.2.1.2 Motor Start Option - Align
        3. 6.2.1.3 Motor Open Loop Ramp
        4. 6.2.1.4 Motor Open Loop Debug
      2. 6.2.2 Controller Configuration for spinning the Motor in Closed Loop
        1. 6.2.2.1 PI Controller Tuning for Closed Loop Speed Control
          1. 6.2.2.1.1 Reference
          2. 6.2.2.1.2 Speed Controller Tuning
        2. 6.2.2.2 Testing for Successful Startup Into Closed Loop
    3. 6.3 Fault Handling
      1. 6.3.1 Abnormal BEMF Fault [ABN_BEMF]
      2. 6.3.2 Monitoring Power Supply Voltage Fluctuations for Voltage Out of Bound Faults
      3. 6.3.3 No Motor Fault [NO_MTR]
  10. 7Advanced Tuning
    1. 7.1 Control Configurations Tuning
      1. 7.1.1  Control Mode of Operation
        1. 7.1.1.1 Closed Loop Speed Control Mode
        2. 7.1.1.2 Closed Loop Power Control Mode
        3. 7.1.1.3 Closed Loop Torque Control Mode
        4. 7.1.1.4 Voltage Control Mode
      2. 7.1.2  Initial Speed Detection of the Motor for Reliable Motor Resynchronization
      3. 7.1.3  Unidirectional Motor Drive Detecting Backward Spin
      4. 7.1.4  Preventing Back Spin of Rotor During Startup
        1. 7.1.4.1 Option 1: IPD
        2. 7.1.4.2 Option 2: Slow First Cycle
      5. 7.1.5  Gradual and Smooth Start up Motion
      6. 7.1.6  Faster Startup Timing
        1. 7.1.6.1 Option 1: Initial Position Detection (IPD)
        2. 7.1.6.2 Option 2: Slow First Cycle
      7. 7.1.7  Stopping Motor Quickly
      8. 7.1.8  Flux Weakening: Operating Motor at Speeds Higher than Rated Speed
      9. 7.1.9  Maximum Torque Per Ampere : Improve Efficiency of IPMSM Motors
      10. 7.1.10 Preventing Supply Voltage Overshoot During Motor Stop.
      11. 7.1.11 Protecting the Power Supply
      12. 7.1.12 FOC Bandwidth Selection
  11. 8Hardware Configurations
    1. 8.1 Direction Configuration
    2. 8.2 Brake Configuration
    3. 8.3 Main.h Definitions
      1. 8.3.1 Sense Amplifier Configuration
      2. 8.3.2 Driver Propagation Delay
      3. 8.3.3 Driver Min On Time
      4. 8.3.4 Current Shunt Configuration Selection
        1. 8.3.4.1 Three Shunt Configurations
        2. 8.3.4.2 Dual Shunt Configuration
        3. 8.3.4.3 Single Shunt Configuration
      5. 8.3.5 CSA Offset Scaling Factor Selection
    4. 8.4 Real Time Variable Tracking
  12. 9Revision History

7.1.12 FOC Bandwidth Selection

The FOC algorithm is periodically executed in the interrupt routine to update the rotor angle to extract the maximum efficiency from the motor. This FOC rate can be configured by user based on the application bandwidth requirements.

HIGH_FREQ_FOC_EN bit configuration in the Section 5.3.6 can be set to 1b to get the maximum FOC execution rate of 10kHz. Setting this bit to 0b reduces the maximum FOC execution rate by 2.

Note: FOC routine can only be executed at a multiple of PWM frequency, Hence, the maximum achievable FOC rate of 10kHz is applicable for PWM frequencies with multiple of 10 (for example, 10kHz, 20kHz, 30kHz). For PWM frequencies of 15kHz, 45kHz, and so on, the maximum FOC rate is 7.5kHz (15kHz/2, 45kHz/6, and so on).