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Brushless DC (BLDC) Motor Fundamentals

From Microchip Technology, Inc.
 

 
Brushless Direct Current (BLDC) motors are one of the motor types rapidly gaining popularity. BLDC motors are used in industries such as Appliances, Automotive, Aerospace, Consumer, Medical, Industrial Automation Equipment and Instrumentation. As the name implies, BLDC motors do not use brushes for commutation; instead, they are electronically commutated. BLDC motors have many advantages over brushed DC motors and induction motors. In addition, the ratio of torque delivered to the size of the motor is higher, making it useful in applications where space and weight are critical factors. In this application note, we will discuss in detail the construction, working principle, characteristics and typical applications of BLDC motors.
Product Announcements
BEI Kimco Magnetics - Typical "inside-out" brushless DC (BLDC) motor
BEI Kimco Magnetics The typical "inside-out" brushless DC (BLDC) motor provides greater output power, higher operating speeds and cleaner, quieter operation than its brush-type counterparts. BLDC... (read more)
Crouzet - Kimco application guide for brushless dc motors
Kimco application guide for brushless dc motors. Download this useful pdf to learn more about our brushless dc motors and which applications they work in. (read more)
BEI Kimco Magnetics - Kimco application guide for brushless dc motors
Kimco application guide for brushless dc motors. Download this useful pdf to learn more about our brushless dc motors and which applications they work in. (read more)
KNF Neuberger, Inc. - Vacuum Pump/Piston Compressor Combination
Where independent functions are needed, KNF will match a variety of pumps together on a common motor to save cost and size. Driven by an electronically commutated DC (BLDC) motor, this custom pump... (read more)
BEI Kimco Magnetics - Performance, Precision & Technology of CST Motors
Performance, Precision & Technology. BEI Kimco Magnetics was founded in 1974 and specializes in rotary and linear motion control products. The company's precision control products include... (read more)
Crouzet - Performance, Precision & Technology of CST Motors
Performance, Precision & Technology. Crouzet (pronounced cruise-A) started operations in the US in 1978. A global company of about $180 M, Crouzet is headquartered in France, with about 2000... (read more)
Topics of Interest
Brushless Direct Current (BLDC) motors are gaining popularity and larger market acceptance. BLDC motors are used in industries such as Industrial Automation Equipments, Consumer, Medical, Automotive,... (Read More)
Brushless Direct Current (BLDC) motors have many advantages over other types of motors available in the industry. Previously, we have discussed the working principles of BLDC motors and the basics of... (Read More)
The dsPIC30F2010 is a 28-pin 16-bit MCU specifically designed for embedded motor control applications. AC Induction Motors (ACIM), Brushless DC (BLDC) and DC are some typical motor types for which the... (Read More)
AN1175 Sensorless Brushless DC Motor Control with PIC16 MOTOR CONTROL Author: Joseph Julicher Dieter Peter BLDC motor control consists of two parts. Part 1 is Microchip Technology Inc. commutating the... (Read More)
AN901 Using the dsPIC30F for Sensorless BLDC Control Known Limitations Author: Charlie Elliott Smart Power Solutions, LLP As delivered, the maximum output frequency at Co-author: Steve Bowling which... (Read More)