20
"The design of the
motor should be viable
in terms of ease of
manufacturing, long-
term sustainability for
maximum profit, and
long-term benefit to the
organization/industry."
Dr. Naveed-ur-Rehman Malik
Motor Drives Engineer,
Dyson
First, can you use one controller to control multiple BLDC motors? This option can reduce
development costs. Other factors in choosing the right controllers and drivers include
evaluating
• BLDC power and processing requirements: The more power and processing you
require, the higher the controller and driver costs.
• Rotor position detection method: Position sensors adds cost, but measuring BEMF
can add development time.
• Driver type: Trapezoidal is the easiest and least expensive type, but sinusoidal and
FOC driver types, although more time intensive, have performance benefits.
Chapter Four: Cost Considerations
