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  • VF Control of 3-Phase Induction Motor Using Space Vector Modulation
    VF control using the Sine PWM algorithm is a popular algorithm for AC induction motor control; however, this algorithm has certain drawbacks which affect the overall system efficiency. A more advanced switching algorithm, like Space Vector Modulation (SVM), overcomes the drawbacks of the Sine PWM
  • Using the dsPIC30F / dsPIC33F for Vector Control of an ACIM
    This application note describes a vector control application that is written for the dsPIC30F family of devices. Except for a brief discussion on control theory, the information presented assumes you have a basic understanding of AC Induction Motor (ACIM) characteristics. References are included
  • AN1162 - Sensorless Field Oriented Control (FOC) of an AC Induction Motor (ACIM)
    AN1162 Sensorless Field Oriented Control (FOC) of an AC Induction Motor (ACIM) operate at a speed that is roughly proportional to the Author: Mihai Cheles input frequency. As you decrease the frequency of the Microchip Technology Inc. drive voltage, you also need to decrease the amplitude Co-Author
  • Mathematics of Electronic Motor Control
    control of multi-phase motors. The AC induction motor is the workhorse of most household goods because it is easy to control and is very low-cost. In its simplest configuration it plugs directly into the wall with a minimum of electronics in the motor. But to increase motor efficiency and improve
  • Motors and Drives: A Practical Technology Guide
    products: brush DC servo drives, DC drives, SCR DC drives, stepper drives / motors, AC servo drives, and brushless DC servo drives. Though in smaller percentage of use, encoderless flux vector, closed loop vector, and direct torque control type drives are gaining in popularity. It is hoped that this book
  • Drive Helps Gear Dyno Keep its Cool
    , and performance is only marginally better than that of conventional dynamometers. The G-Force gear dynamometer, in contrast, does away with liquid cooling systems. It uses two ac motors hooked to a common power supply: one motor at the differential input and another at the output (absorber
  • Eliminating sensors from closed-loopcontrol
    . Here's how encoderless systems compare with more traditional motor-control methods. To operate efficiently, a conventional flux-vector PWM drive needs to know the rotor flux angle inside an ac-induction motor. A pulse encoder typically supplies information about rotor speed and angular position
  • 'Low-surge' inverters
    New circuit topology lets ac servodrives keep a lid on surge voltages that can otherwise shorten motor life. The G7 inverter provides both open-loop and closed-loop vector control. Open-loop mode uses a flux observer algorithm to extend the speed range and provide true torque control. Closed-loop

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