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3-Phase AC Induction Motor  Favorite

The AC induction motor is a rotating electric machine designed to operate from a three-phase source of alternating voltage. The stator is a classic three-phase stator with the winding displaced by 120°.
  • Medium construction complexity, multiple fields on stator, cage on rotor
  • High reliability (no brush wear), even at very high achievable speeds
  • Medium efficiency at low speed, high efficiency at high speed
  • Driven by multi-phase Inverter controllers
  • Motor EMI good but... terrible EMI from inverter
  • Sensorless speed control possible
  • Low cost per horsepower, though higher than for 1-phase AC induction motor
  • Higher start torque than for 1-phase, easy to reverse motor
  • Inverter shoot-through' possible, requires dead-time' circuits and compensation

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Featured Reference Designs

Freescale 3-Phase AC Induction Motor application block diagram

Recommended Solutions

Products Features
Controllers (MCU and DSC)
MC56F84xxx: Digital Signal Controllers 100 MHz/100 MIPS, 256 KB flash, 320ps PWM, 2x12-bit ADCs
56F8335_8135: Digital Signal Controllers 60 MHz DSC, 64 K flash, 8 KB RAM for industrial drives/digital control
56F824X_825X: Digital Signal Controller 60 MHz operation frequency
56F801X: Digital Signal Controller with LIN 32 MHz DSC, 16 K flash, 4 KB RAM for appliance drives
56F802X: Digital Signal Controller 32 MHz DSC, 16K flash, 4KB RAM for appliance drives
56F803X: Digital Signal Controller with CAN 32 Mhz DSC, 64 K flash, 8 KB RAM for industrial drives
K10_100: Kinetis K10 Baseline 100 MHz MCUs 128 KB-512 KB flash, fast access, high reliability with four-level security protection
S08P: 8-bit 5V EEPROM with TSI MCUs Scalable from .5K-4 KB of RAM and 2K-60 KB flash
S08MP: 8-bit General Purpose MP MCUs 8-bit MCU, 16 K flash, low-cost, dedicated motor control peripherals
MC56F800x: MC56F8006 and MCF56F8002 Digital Signal Controllers 32 MHz DSC, 16K flash, 2 KB RAM for appliance drives
VF3xx: Vybrid VF3xx Single-chip Solution with Dual XiP Quad SPI, Dual Ethernet and L2 Switch ARM Cortex-A5 266MHz, 1.5M SRAM, Display, dual 10/100 ETH, dual CAN, PMU, <1W
VF5xx: Vybrid VF5xx Single-core Solution with Dual Ethernet and L2 Switch ARM Cortex-A5 500MHz, 1.5M SRAM, Display, dual 10/100 ETH, dual CAN, PMU, <1W
VF6xx: Vybrid VF6xx Dual Heterogeneous Core Solution with XGA Display, Dual USB, Dual Ethernet and L2 Switch ARM Cortex-A5 500MHz, Cortex-M4 167MHz, 1.5M SRAM, Display, dual 10/100 ETH, dual CAN, PMU, <1W
Software and Tools
FreeMASTER Run-Time Debugging Tool Real-time control and debugging tool
USB
USB2SER: USB to Serial Bridge - a Ready Play Solution Communication bridge, full-speed USB 2.0 to UART RS232/485, optional hardware/software flow control, even/odd parity, stop bits config and driver support
Advantages
  • Dedicated motor control peripherals, high energy efficiency and extensive motor control library
  • FreeMASTER real-time control and debugging tool for 8-, 16- and 32- bit MCUs
  • MC56F80xx offers eight-channel pulse-width modulation (PWM) for micro-stepping functionality
  • MC56F8025 includes a high-performance PWM (up to 96 MHz) and highly accurate ADC (12-bit, 750 ns conversion rate)
  • MC56F8006 DSC offers the highest BLDC, ACIM and PMSM motor control performance for lowest cost
  • MC56F82xx integrated PGA, DAC and HSCMP reduces the need for external components and simplifies system complexity and cost
  • MCF51ACxx Flexis MCUs have math, filters and motor control software library
  • QuickStart initialization and development tool
  • Processor Expert™ tool included with MC56F800MC for MC56F8xxx DSCs
  • Most products shown are available for a minimum of 10 years after launch

Featured Products

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