SPRAD34B July   2023  – October 2023 MSPM0G1507

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Getting Started With MSPM0 Motor Control
  6. 3Brushed-DC Motor Control
    1. 3.1 Background
    2. 3.2 Software Architecture
    3. 3.3 Block Diagrams
      1. 3.3.1 H-Bridge Motor Driver
      2. 3.3.2 H-Bridge Gate Driver
    4. 3.4 Hardware Support
    5. 3.5 Software Support
    6. 3.6 Evaluating Brushed-DC with MSP Motor Control SDK
  7. 4Stepper Motor Control
    1. 4.1 Background
    2. 4.2 Software Architecture
    3. 4.3 Block Diagrams
    4. 4.4 Hardware Support
    5. 4.5 Software Support
    6. 4.6 Evaluating Stepper With MSP Motor Control SDK
  8. 5BLDC Sensored Trap Control
    1. 5.1 Background
    2. 5.2 Software Architecture
    3. 5.3 Block Diagrams
    4. 5.4 Hardware Support
    5. 5.5 Software Support
    6. 5.6 Evaluating Sensored Trap with MSP Motor Control
  9. 63-Phase Sensorless FOC Control
    1. 6.1 Background
    2. 6.2 Software Architecture
    3. 6.3 Block Diagrams
      1. 6.3.1 MSPM0Gx10x and Gate Driver with Analog/MOSFET Integration
      2. 6.3.2 MSPM0Gx50x Analog Integration and Gate Driver
    4. 6.4 Hardware Support
    5. 6.5 Software Support
    6. 6.6 Evaluating Sensorless FOC with MSP Motor Control
    7. 6.7 Sensorless FOC Performance
  10. 7References
  11.   Revision History

6.7 Sensorless FOC Performance

Table 6-3 and Table 6-4 shows the 3-phase sensorless FOC design performance with the following motors tested.

Sensorless FOC Design Specifications

  • PWM frequency = FOC = 10 kHz – Sensorless
  • Compiler - Code Composer Studio v. 12.0 (CCS)
Table 6-3 Sensorless FOC Design Specifications
MCU CPU Clock (MHz) Cortex Current sensing Total workload Total code (Kb) Total SRAM (kB)
MSPM0G 80 M0 2 Shunt 55% 12.8 1.64

Motor Performance

  • BOOSTXL-DRV8323RS, VM = 24 V
  • Math Accelerator (MATHACL) enabled
  • PWM frequency = FOC loop frequency
Table 6-4 Sensorless FOC Motor Performance
LVSERVOMTR LVBLDCMTR
Closed loop speed range (RPM) 200 – 4500 RPM 280 – 5830 RPM
Max electrical frequency range (kHz) 265 Hz 389.5 Hz
Speed accuracy error <1% <1%
PWM frequency (kHz) 15 kHz 15 kHz
Maximum power (W) approximately100-400 W approximately100-400 W