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ACIM Applications With DSCs and MCUs


The AC Induction Motor (ACIM) is the workhorse of the motor world. It is the most common motor type, used in everything from consumer products to heavy industry. Its simple design with no brushes makes it highly reliable and allows it to be manufactured at a low cost. However, it is less efficient than other motors like the Permanent Magnet Synchronous Motor (PMSM), which is partially related to the heat generation in the rotor windings. The open-loop Voltage/frequency (V/f) drive technique is traditionally used to control ACIMs, and it can be implemented on simple 8-bit PIC® and AVR® microcontrollers (MCUs). This drive technique is not very efficient, so for applications that need higher efficiency, an advanced control solution like Field-Oriented Control (FOC) can be applied. Implementing this advanced control requires high-performance dsPIC33 Digital Signal Controllers (DSCs) or 32-bit PIC32MK or SAM MCUs.

Applications


  • Blowers
  • Home appliances
  • Pumps
  • Air conditioner and refrigerator compressors
  • Automation/industrial applications
  • Power tools

Recommended Products for AC Induction Motor Control


Products On-Off
Control
TRIAC-Phase
Control
Variable Frequency
 (V/Hz, V/f)
Sensored FOC Sensorless FOC  
Microcontrollers (MCUs),
Digital Signal Controllers (DSCs)
and Field-Programmable
Gate Arrays (FPGAs)
8-bit PIC® and
AVR® MCUs
8-bit PIC and
AVR MCUs
8-bit PIC and
AVR MCUs
     
    dsPIC33 DSCs dsPIC33 DSCs dsPIC33 DSCs  
    32-bit PIC32MK
and SAM MCUs
32-bit PIC32MK
and SAM MCUs
32-bit PIC32MK
and SAM MCUs
 
    IGLOO®  2 FPGAs IGLOO 2 FPGAs IGLOO 2 FPGAs  
    SmartFusion® 2
SoC FPGAs
SmartFusion 2
SoC FPGAs
SmartFusion 2
SoC FPGAs
 
3-Phase Gate Drivers MIC4604
MIC4605
MIC4604
MIC4605
MIC4604
MIC4605
MIC4604
MIC4605
MIC4604
MIC4605
 
DSCs or MCUs Integrated Comparator with Induction Motor

FPGAs for Multi-Axis Motor Control


Build safe and reliable multi-axis deterministic motor control on a single System-on-Chip (SoC) FPGA. FPGAs provide many advantages for motor control applications, including:

  • Compact solution to save board space and reduce product size
  • Motor speeds exceeding 100,000 RPM for sensorless FOC
  • Low latency of 1μs for FOC loop from ADC measurement to PWM generation allows switching frequencies up to 500 kHz.
  • Design flexibility with modular IP suite
  • Advanced safety features such as rotor slip, overload detection and overcurrent protection
  • SoC integration of system functions reduces Total Cost of Ownership (TCO)

Motor Control Hardware and Software Solutions


Featured Software Tools

Motor Control Application  Algorithm and Software

Motor Control Application Algorithm and Application Software

To support the development of motor applications, we provide motor control libraries and examples for Field-Oriented Control (FOC), windmilling, DC-link compensation, field weakening and many other control algorithms.

Motor Control Library Stack

Motor Control Library

The Motor Control Library contains FOC function blocks that are optimized for the dsPIC33 families of DSCs. The library functions are designed to be used within any application framework, providing an efficient and flexible solution for implementing a motor control application.

MPLAB X IDE Logo

MPLAB® X Integrated Development Environment (IDE)

MPLAB X Integrated Development Environment (IDE) is an expandable, highly configurable software program that incorporates powerful tools to help you discover, configure, develop, debug and qualify embedded designs for Microchip’s microcontrollers and digital signal controllers.

MPLAB Code Configurator Logo

MPLAB Code Configurator (MCC)

MPLAB Code Configurator (MCC) is a free, graphical programming environment that generates seamless, easy-to-understand C code to be inserted into your project.

Featured Hardware Tools

dsPICDEM MCHV-3 High-Voltage Motor Control Dev Board

dsPICDEM MCHV-3 High-Voltage Motor Control Development Board

Products


Documentation


Title
AN1206 - Sensorless Field Oriented Control (FOC) of an AC Induction Motor (ACIM) Using Field Weakening Download
AN1292 - Dual-Shunt FOC with PLL Download
AN3049 - Sensorless Position Control of Brushed DC Motor Using Ripple Counting Technique Download
AN2584 - Integrated Power Factor Correction (PFC) and Sensorless Download
AN1162 - Sensorless Field Oriented Control (FOC) of an AC Induction Motor (ACIM) Download
AN887 - AC Induction Motor Fundamentals Download
AN955 - VF Control of 3-Phase Induction Motor Download
AN1305 - Sensorless 3-Phase Brushless Motor Control with the PIC16FXXX Download
AN900 - Controlling 3-Phase AC Induction Motors Using the PIC18F4431 Download
AN905 - Brushed DC Motor Fundamentals Download
AN2757 - Sensored (Encoder-Based) Field Oriented Control of a Three Phase Permanent Magnet Synchronous Motor (PMSM) Download
AN2520 - Sensorless Field Oriented Control (FOC) for a Permanent Magnet Synchronous Motor (PMSM) Using a PLL Estimator and Equation-based Flux Weakening (FW) Application Note Download
AN2590 - Sensorless FOC for PMSM Using Reduced Order Luenberger Observer - Sensorless FOC for PMSM Using Reduced Order Luenberger Observer Application Note Download
AN984 - An Introduction to AC Induction Motor Control Download
AN967 - Bidirectional VF Control of Single and 3-Phase Induction Motors Using the PIC16F72 Download
AN4764 - FOC of Three-Phase BLDC Motor Using Rotary Inductive Position Sensor Download
Title
Motor Control and Drive Brochure Download
Title
CE002 Configuring 10-Bit dsPIC DSC A/D Converters for 1 Msps Conversion Rate Download
CE019 - Proportional Integral Derivative (PID) controllers & closed-loop control Download
Sensorless FOC PLL Estimator MCLV Download
PFC Sensorless FOC PLL Estimator MCHV Download
CE155 - Real-Time Data Monitoring (RTDM) Example Download
Title
dsPIC33 Motor Control Library for FOC Download
Title
dsPICDEM MCLV-2 (DM330021-2) Development Board User's Guide Download
dsPICDEM MCSM Development Board Users Guide Download
Motor Control Starter Kit with mTouch User Guide Download
dsPICDEM MCHV-2 Development Board User's Guide Download
Title
WP100 - How to Turn an AC Induction Motor Into a DC Motor (A Matter of Perspective) Download

Title

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