Microcontrollers (MCU)

C2000 real-time control MCUs – Motor control

Solutions

Accelerate your motor control development by starting with our most advanced solutions and application specific TI Designs.

Software

Offering fundamental software building blocks, example implementations, and high performance complete solutions for both rotor sensored and sensorless designs.

Tools & resources

Start evaluation with low cost motor control hardware. Enhance your development through use of simulation and code generation tools, education on motor control, and training on our solutions.

Motor control applications 

Electric vehicle charging
industrial drives
appliances
medical pump

Electric vehicles

  • Traction drives
  • Construction & agriculture
  • Auxiliary motors
  • Power steering
  • Drones
  • E-Mobility

Industrial drives

  • Servo drives
  • AC drives & inverters
  • CNC
  • Robotics
  • Elevators
  • Door controls
  • Textile

Appliances

  • Fans
  • Small household appliances
  • Refrigeration
  • Laundry
  • HVAC

General motor control

  • Compressors
  • Medical pumps
  • Dental tools
  • Garden & power tools
  • Fitness equipment

Market leading motor control solutions

C2000 microcontrollers have been used to control motors in a huge variety of applications for over 25 years.  These are primarily three-phase machines that have power levels from less than 100 watts to multiple megawatts. 

  • Motors typically used in applications with variable frequency and variable loads
  • Field Oriented Control (FOC) and other advanced techniques 
    • Maximize energy efficiency
    • Minimum current to produce only the torque required
    • Has greatest benefits in highly dynamic systems
  • Use of software observers whenever possible to replace mechanical rotor sensors to reduce system cost and improve reliability
  • Use of mechanical rotor sensors for highest performance systems
Field Oriented Control Simplified!
 
  • Locate the rotor flux vector through sensor or observer
  • Calculate stator flux vector orientation and magnitude to maximize efficiency of torque production and meet control system torque demand
  • Produce the stator flux vector through PWM control of the three-phase inverter
field oriented control diagram

C2000 development paths

There are two different paths for C2000 motor control.

DMC Library

The DMC Library is a broad set of motor control software building blocks created over years of helping motor control experts.  Baseline system examples are given on hardware EVMs as a starting point for experienced motor control engineers.

More recently the DMC Library was used as a baseline to build more advanced solutions specific for industrial drive applications.  These are called DesignDRIVE and components include:

  • Fast Current Loop (< 1us field oriented control processing)
  • Inverter protection techniques
  • Demonstration of multiple current sensing topologies
  • Interface to multiple rotor sensor standards
  • Industrial communications   

 

InstaSPIN™ motor control solutions

Created to give those with limited motor control design experience access to superior performing systems while easing many of the real-world challenges in developing advanced motor control solutions. InstaSPIN components include:

  • Motor parameter identification
  • Self-tuning sensorless observer
  • Pre-calculated torque controller tuning
  • Inertia identification with high-performance velocity/position controller
  • Complete trajectory generation and motion control solution

DMC Library

InstaSPIN

Building blocks for customer expertise Expertise included
Development Package controlSUITE MotorWare
Device Support Most C2000 devices Specific Piccolo devices with InstaSPIN library in on-chip ROM
Software Delivery Source code and libraries On-chip ROM library and source code
Motor Commissioning Not included Motor Parameter and system inertia identification
Sensorless Observer Multiple observers for different motor types and techniques Single unified observer (FAST)  for all motor types
Observer Tuning Challenging, user must tune Automatic, self-tuning
Current Control User tuned; Fast Current Loop option as part of DesignDRIVE Automatic initial stable tuning; User can adjust or customize
Velocity and Position Control User tuned PI or customized User tuned PI (InstaSPIN-FOC) or single variable high performance velocity & position controller (InstaSPIN-MOTION)
Motion Control Basic, user customized Built-in motion trajectory calculation and generation with state machine framework (InstaSPIN-MOTION)

Observer comparison

The sensorless observer is the most important feature for a sensorless FOC system.

Sliding Mode Observer (SMO)

The most widely used rotor flux estimator in the industry, but takes expertise to implement and has challenges with many real world system scenarios (start-up, low-speed, speed reversals, already moving rotor, etc.)

 

Enhanced Sliding Mode Observer (eSMO)

Created to improve stability, performance, and ease of tuning, but still faces many of the same challenges.

FAST™­ Observer

Offers the highest performance in the industry, requires no expertise, no tuning, and includes features and capabilities to solve the real-world system challenges. FAST is only available in on-chip ROM on select Piccolo devices as part of our InstaSPIN solutions.

SMO DMC Library

eSMO DMC Library

FAST™ InstaSPIN-FOC & InstaSPIN-MOTION

Estimator motor types

Synchronous

Non-salient

Synchronous

Non-salient

Asynchronous & Synchronous

(with saliency compensation)

Estimator features Standard

Angle compensation for

filter phase lag

Torque, Flux, Angle, and 0-phase lag

Speed signals

High speed angle compensation

Rs on-line for motor temperature sensing

Synchronize to already moving rotor

Estimator motor parameters Datasheet required Datasheet required

Off-line parameter identification

Run-time monitoring

Analog feedback  Vbus, 2-3 currents Vbus, 2-3 currents Vbus, 3 phase voltages, 2-3 currents
Estimator tuning Very challenging Challenging Self tuning
Estimator low-speed performance Average Average Excellent, <1Hz possible
Start-up Open loop, challenging Open loop, challenging

Excellent;

Converges on angle estimate in less than 1 electrical cycle

Low-speed closed loop ~20 Hz typ 10-20 Hz typ < 1 Hz possible
Dynamic performance Good, effort to tune Good, effort to tune Excellent
Performance through zero speed Not achieved Not achieved Excellent
PWM features SVPWM SVPWM with Dead-band Comp SVPWM over-modulation for 100% duty
Current control tuning Expertise required Expertise required Self-tuned & adjustable
Speed control tuning Expertise required Expertise required Expertise required or SpinTAC inertia ID + 1-variable tuning
High-speed & field weakening Challenging Challenging, but best performance for deep field weakening Excellent, but performance reduces under deepest field weakening when motor model breaks down