Hair Dryer Motor 110-220V 90W Brushless DC Motor For Home Appliance

Hair Dryer Motor 110-220V 90W Brushless DC Motor For Home Appliance

Essential Details

Efficiency: IE 4

Warranty: 3 Years

Model Number: KG-2929DC22

Rated Voltage: 110-220V

Rated Speed: 100000RPM

Rated Power: 90W

Continuous Current: Customizable

Place of Origin: Guangdong, China

Type: Brushless DC Motor

Application: Hair dryer

Air Pressue: 120g

Rated Torque: Customizable

Lead Time

Product Description
 

Drawing

Sample

Application

Brushless DC motors use electric switches to realize current commutation, and thus continuously rotate the motor. These electric switches are usually connected in an H-bridge structure for a single-phase BLDC motor, and a three-phase bridge structure for a three-phase BLDC motor. Usually the high-side switches are controlled using pulse-width modulation (PWM), which converts a DC voltage into a modulated voltage, which easily and efficiently limits the startup current, control speed and torque. Generally, raising the switching frequency increases PWM losses, though lowering the switching frequency limits the system’s bandwidth and can raise the ripple current pulses to the points where they become destructive or shut down the BLDC motor driver.

Construction Of BLDC Motors

Brushless DC Motor can be constructed in several different physical configurations. In the conventional (also known as inrunner) configuration, the permanent magnets are part of the radially center core. In the outrunner (or external-rotor) configuration, the radial-relationship between the coils and magnets is reversed.

The stator coils in the outrunner configuration form the center core of the motor, while the permanent magnets spin within an overhanging rotor which surrounds the core. For this application, the inrunner configuration was selected. The rotor is in the center with the permanent magnets and that the stator contains the windings.

Working Of The BLDC Motor

The starting-current setup in the circuit through the stator windings sets up a magnetomotive force (mmf) which is perpendicular to the main mmf set up by the permanent magnet. According to Fleming’s left-hand rule, a force is experienced by the armature conductors. As the armature conductors are in the stator, a reactive force develops a torque in the rotor. When this torque is more than the load torque and frictional torque, the motor begins rotating.

The process of removing current from one circuit and giving it to another circuit is known as commutation.

The phase current and developed torque in the Brushless DC Motor. In every case there are two phases that are contributing to positive torque and one phase contributing to zero torque. If the torque of each commutation interval is combined, the total torque is a contribution of two torques from two phases that are perfectly flat.