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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
  • 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
    energy consumption may come not only from more efficient motor control techniques, but also from increased functionality. An example is the ability to reverse the direction of an AC induction motor used to drive a washing machine. Adding this capability allows the load to be automatically balanced
  • 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
  • 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
  • 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
  • Drive Helps Gear Dyno Keep its Cool
    ). A separate Yaskawa F7 adjustable-frequency, flux-vector drive controls each motor. A technique called common busing joins the drive's dc buses. Power from the absorber motor goes to the input-drive motor with little waste heat, thereby eliminating the need for cooling towers. About 92% of absorber motor

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