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
