RDDSCACIMVC: 3-Phase AC Induction Vector Control Drive Current Sensing Reference Design

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RDDSCACIMVC: 3-Phase AC Induction Vector Control Drive Current Sensing Reference Design

RDDSCACIMVC: 3-Phase AC Induction Vector Control Drive Current Sensing Reference Design

Overview

This reference design enables development of a vector control algorithm for a three-phase AC induction motor implemented on NXP® digital signal controllers MC56F8013/MC56F8023.

  • Targeted mainly at consumer and industrial applications
  • Cost-effective and highly reliable, the algorithm implements a single shunt current sensing, eliminating the need for more than one sensor
  • High range of motor operating speeds up to 18000RPM
  • An adaptive closed loop rotor flux estimator enhances control performance and increases the overall robustness of the system
  • A reference manual provides a detailed description of the application, including a design of hardware and software

Features

  • 3-phase AC induction motor drive
  • Designed to fit into consumer and industrial applications
  • Uses 56F8013 or 56F8023 32 MIPS Digital Signal Controller
  • Running on a 3-phase High Voltage Power Stage
  • Control technique incorporating:
    • Vector control of three-phase AC induction motor with position encoder
    • Closed-loop speed control
    • Both directions of rotation
    • Both motor and generator modes
    • Reconstruction of three-phase motor currents from DC-Bus shunt resistor
    • Closed loop current control
    • Flux and torque independent control
    • Adaptive rotor flux space-vector estimator
    • Field-weakening for high speeds
    • High-speed range, max speed – 18000 RPM (2-pole motor)
  • FreeMASTER software control interface (motor start/stop, speed setup)
  • FreeMASTER software monitor
  • FreeMASTER software graphical control page (required speed, actual motor speed, start/stop status, DC-Bus voltage level, motor current, system status)
  • FreeMASTER software speed scope (observes actual and desired speeds, DC-Bus voltage and motor current)
  • FreeMASTER software high-speed recorder (reconstructed motor currents, vector control algorithm quantities)
  • DC-Bus overvoltage and undervoltage, overcurrent protection

Block Diagram

1103_3_PHASE_AC1.gif

Board

ACIMVCDEMO.jpg

Design Resources

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Revision #:
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Last update:
‎08-11-2020 11:48 AM
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