TIDUF56 January   2024

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Terminology
    2. 1.2 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 TMS320F28P65x-Q1
      2. 2.3.2 DRV3255-Q1
      3. 2.3.3 LM25184-Q1
      4. 2.3.4 TCAN1044A-Q1
  9. 3System Design Theory
    1. 3.1 Three-Phase PMSM Drive
      1. 3.1.1 Field-Oriented Control of PM Synchronous Motor
        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. 3.2 Field Weakening (FW) Control
  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 Conditions
      3. 4.1.3 Test Equipment Required for Board Validation
    2. 4.2 Test Setup
      1. 4.2.1 Hardware Setup
      2. 4.2.2 Software Setup
        1. 4.2.2.1 Code Composer Studio™ Project
        2. 4.2.2.2 Software Structure
    3. 4.3 Test Procedure
      1. 4.3.1 Project Setup
      2. 4.3.2 Running the Application
    4. 4.4 Test Results
  11. 5Design and Documentation Support
    1. 5.1 Design Files
      1. 5.1.1 Schematics
      2. 5.1.2 BOM
      3. 5.1.3 PCB Layout Recommendations
        1. 5.1.3.1 Layout Prints
    2. 5.2 Tools and Software
    3. 5.3 Documentation Support
    4. 5.4 Support Resources
    5. 5.5 Trademarks

4.1.1 Hardware Board Overview

Figure 4-1 shows an overview of a typical two-wheeler traction inverter system.

GUID-20231206-SS0I-5K03-F0WC-HVLNL1RM2RSR-low.svg Figure 4-1 TIDM-02017 Hardware Board Block Diagram

The motor control board has functional groups that enable a complete motor drive system. The following is a list of the blocks on the board and their functions, Figure 4-2 shows the top view of the board and different blocks of the TIDM-02017 PCB:

  • DC bus input
    • DC bus input connector
    • 33.6-μF film capacitor
  • 3-phase inverter
    • Up to 5-kW three-phase inverter supports PMSM or IPM
    • 20-kHz switching frequency
    • In-phase Hall-effect current sensing
  • Control
    • TMDSCNCD28P65X MCU controlCARD™
    • 200-MHz, 32-bit CPU with FPU, CLA, and TMU
  • Auxiliary power supply
    • An external 12-V power supply is required for the board. Power can be provided by connecting a AC-12-V adapter.
GUID-20231211-SS0I-BRFK-P76M-KK2JWT8WGGPJ-low.svg Figure 4-2 Layout of Two-Wheeler Traction Inverter Reference Design Board

TI recommends taking the following precautions when using the board:

  • Do not touch any part of the board or components connected to the board when the board is energized.
  • Do not touch any part of the board, the kit or the assembly when energized.
  • Power components can be hot especially at high loads.

The connectors J16 and J17 are the external interfaces for the control board. The pinouts of each of the connectors are provided in Table 4-1 and Table 4-2, respectively.

Table 4-1 Pinout for Connector J16
PIN SIGNAL PIN SIGNAL
1 CAN_L 2 CAN_H
3 GND_Bat 4 GND_Bat
5 +12V_Bat 6 +12V Bat
7 +5_Pos 8 GND
9 QEP_I 10 GND
11 PWM/GPI 12 GND
13 QEP_B 14 GND
15 QEP_A 16 GND
Table 4-2 Pinout for Connector J17
PIN SIGNAL PIN SIGNAL
1 GND 2 GND
3 +5_Throttle 4 +5_Throttle
5 AMR_SINP 6 AMR_SINN
7 AMR_COSP 8 AMR_COSN
9 Inv_Temp 10 GND
11 Motor_Temp 12 GND
13 Throttle_2 14 GND
15 Throttle_1 16 GND