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Improving Brushless DC Motor Control for Better Efficiency and Performance in Industrial, White and Brown Goods

Authored on: Feb 16, 2010

Technical Paper

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To compete in a market increasingly driven by efficiency concerns, vendors of industrial machines and household appliances must make best use of high-efficiency brushless DC (BLDC) motors. Today's microcontrollers offer the compute power and specialized features needed to leverage BLDC motors while minimizing implementation costs. The most useful microcontroller features are specialized timers and on-chip CPU accelerators that eliminate the need for an external digital signal processor (DSP)—even in sensorless control applications. Taking advantage of these features with BLDC motors helps meet government regulations for power efficiency and qualify for ratings (such as Energy Star) that boost sales.

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prabhakar_deosthali Posted Sep 11, 2010

This is a very useful paper which gives enough information for the first-timers in BLDC motor application field to give it a try. BLDC sensor based control is much simple as it only requires a small look up table to control the direction and spped of BLDC motor. The sensor less control however simplied it has been shown in this paper is software intensive solution. The first timers in BLDC should first try to build the sensor based controller and then venture for sensorless controller

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