Selecting A DSP Controller For Brushless Permanent Magnet Motor Drives

by Mala D. M., Varun Kumar H., Sudharshana, and Rakesh K. Dhawan, Strategic Technology Group, Ashburn, Va, U.S.A. and Pune, Maharashtra, India, How2Power Today, Apr 30 2012

Focus:
This article explains the many criteria that must be considered when choosing a controller IC for a motor drive, specifically for applications employing brushless permanent magnet (PM) motors. Following a brief review of the operating principles of these motors and an overview of motor control requirements under digital control, the authors discuss controller selection criteria in depth while comparing the ability of MCUs and DSPs to meet these criteria. Ultimately, the authors make the case that DSP-based control is preferable to MCU-based control in brushless PM motor applications because of the special capabilities offered by digital signal controllers (DSCs.) Article includes a table comparing specs and features of various DSCs from different vendors.

What you’ll learn:

• How to select a microcontroller or digital signal controller IC for brushless PM motor drive designs
• How to understand the benefits of using digital signal controllers in brushless PM motor drives

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