SPRUJF4 October   2024

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
    5.     General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
  7. 2Hardware
    1. 2.1 Hardware Description
      1. 2.1.1 Auxiliary Power Supply
      2. 2.1.2 DC Link Voltage Sensing
      3. 2.1.3 Motor Phase Voltage Sensing
      4. 2.1.4 Motor Phase Current Sensing
        1. 2.1.4.1 Three-Shunt Current Sensing
        2. 2.1.4.2 Single-Shunt Current Sensing
      5. 2.1.5 External Overcurrent Protection
      6. 2.1.6 Internal Overcurrent Protection for TMS320F2800F137
    2. 2.2 Getting Started Hardware
      1. 2.2.1 Test Conditions and Equipment
      2. 2.2.2 Test Setup
  8. 3Motor Control Software
    1. 3.1 Three-Phase PMSM Drive System Design Theory
      1. 3.1.1 Field-Oriented Control of PMSM
        1. 3.1.1.1 Space Vector Definition and Projection
          1. 3.1.1.1.1 ( a ,   b ) ⇒ ( α , β ) Clarke Transformation
          2. 3.1.1.1.2 ( α , β ) ⇒ ( d ,   q ) Park Transformation
        2. 3.1.1.2 Basic Scheme of FOC for AC Motor
        3. 3.1.1.3 Rotor Flux Position
      2. 3.1.2 Sensorless Control of PM Synchronous Motor
        1. 3.1.2.1 Enhanced Sliding Mode Observer With Phase-Locked Loop
          1. 3.1.2.1.1 Mathematical Model and FOC Structure of an IPMSM
          2. 3.1.2.1.2 Design of ESMO for the IPMS
            1. 3.1.2.1.2.1 Rotor Position and Speed Estimation With PLL
      3. 3.1.3 Field Weakening (FW) and Maximum Torque Per Ampere (MTPA) Control
    2. 3.2 Getting Started Software
      1. 3.2.1 Download and Install C2000 Software
      2. 3.2.2 Using the Software
      3. 3.2.3 Project Structure
  9. 4Test Procedure and Results
    1. 4.1 Build Level 1: CPU and Board Setup
    2. 4.2 Build Level 2: Open-Loop Check With ADC Feedback
    3. 4.3 Build Level 3: Closed Current Loop Check
    4. 4.4 Build Level 4: Full Motor Drive Control
    5. 4.5 Test Procedure
      1. 4.5.1 Startup
      2. 4.5.2 Build and Load Project
      3. 4.5.3 Setup Debug Environment Windows
      4. 4.5.4 Run the Code
        1. 4.5.4.1 Build Level 1 Test Procedure
        2. 4.5.4.2 Build Level 2 Test Procedure
        3. 4.5.4.3 Build Level 3 Test Procedure
        4. 4.5.4.4 Build Level 4 Test Procedure
          1. 4.5.4.4.1 Tuning Motor Drive FOC Parameters
          2. 4.5.4.4.2 Tuning Field Weakening and MTPA Control Parameters
          3. 4.5.4.4.3 Tuning Current Sensing Parameters
    6. 4.6 Performance Data and Results
      1. 4.6.1 Load and Thermal Test
      2. 4.6.2 Overcurrent Protection by External Comparator
      3. 4.6.3 Overcurrent Protection by Internal CMPSS
  10. 5Hardware Design Files
    1. 5.1 Schematics
    2. 5.2 PCB Layouts
    3. 5.3 Bill of Materials (BOM)
  11. 6Additional Information
    1. 6.1 Known Hardware or Software Issues
    2. 6.2 Trademarks
    3. 6.3 Terminology
  12. 7References

4.5.4.2 Build Level 2 Test Procedure

  1. Ensure initial steps listed in Section 4.5.4 have been completed.
  2. To verify the current and voltage-sensing circuit of the inverter for the motor, motor_1 needs to run with v/f open loop. Tune the v/f profile parameters in user_mtr1.h as below according to the specification of the motor if the motor does not spin smoothly. 
    #define USER_MOTOR1_FREQ_LOW_Hz             (10.0f)          // Hz
#define USER_MOTOR1_FREQ_HIGH_Hz            (200.0f)         // Hz
#define USER_MOTOR1_VOLT_MIN_V              (10.0f)          // Volt
#define USER_MOTOR1_VOLT_MAX_V              (200.0f)         // Volt
  3. The motor now spins with a setting speed in the variable motorVars_M1.speedRef_Hz, check the value of motorVars_M1.speed_Hz in the Expressions window. The value needs to be very close, as shown in Figure 4-10.
  4. Connect the oscilloscope voltage and current probes to watch the motor phase voltage and current as shown in Figure 4-11.
  5. Verify the overcurrent fault protection by decreasing the value of the variable motorVars_M1.overCurrent_A, the overcurrent protection is implemented by the CMPSS modules. The overcurrent fault is triggered if the motorVars_M1.overCurrent_A is set to a value less than the actual current, the PWM output is disabled, the motorVars_M1.flagEnableRunAndIdentify is cleared to "0", and the motorVars_M1.faultMtrUse.all is set to "0x10".

TIEVM-MTR-HVINV Build Level 2: Expressions Window at Run Time Figure 4-10 Build Level 2: Expressions Window at Run Time
TIEVM-MTR-HVINV Build Level 2: Motor Phase Voltage and Current Figure 4-11 Build Level 2: Motor Phase Voltage and Current
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