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A type of motor with electronic speed and torque controls built in. BPM motors are used to drive fans in heating and cooling systems. They are speed controlled to ensure optimal airflow, and are quieter and more energy-efficient than conventional motors as long as the duct system is not overly restrictive. BPM motor fans are especially useful in situations that require continuous air circulation. Historically, BPM motors have often been referred to as electronically commutated motors (ECMs). However, this term is more properly used as the trade name for the BPM motor originally produced by GE/Regal Beloit. Other common variants are listed below.
Variants: Electronically Commutated Motor (ECM), Integrated Circuit Motor (ICM), Brushless Direct Current (BLDC)