650W Robot Vacuum Cleaner Motor 45000RPM , 48V Brushless DC Motor For Cleaner

Vacuum Cleaner Motor 650W 48V 45000RPM Brushless DC Motor For Cleaner

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Product Description

Essential details

Rated Voltage: 48V

Rated Speed: 45000RPM

Rated Power: 650W

Commutation: Brushless

Application: Vacuum Cleaner

Weight: 0.75kg

Torque: Customizable

Max. vacuum eyapressure: 20.2kPa

Max. air flow: 2.53m3/min

Efficiency: 43%

Key Word: BLDC Motor

Warranty: 3 Years

Model Number: KG-6586DC48

Place of Origin: Guangdong, China

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.

Torque or Commutation Loop The torque loop is used for sensorless applications to control the current through the motor. The torque is related to the current and therefore this feedback measures the current. A sense resistor measures the voltage and current sense amplifier senses the current and sends the signal to the ADC which digitizes the current and sends it to the controller. Measuring the motor current is often used as a safety feature. In case the motor is in a stalled position, the current increases dramatically. Because of this exceptional increase in current, the ADC values reach a current-limit level that causes the system to shut down.

Motor Advantages

1. Linear speed-torque characteristics, bettercontrollability: nternal feedback. Pemanent magnet design with feedback gives Brushless DC Motor slinear characteristics when compared to open-loop AC-induction motors or brush DCmotors. Series DC motors have exponentially decreasing characteristics
2. High starting torque: nternal feedback gives higher starting torque. The torque produced at any instant ina BLDC is twice the torque produced in brush DC motor of the same rating, as twophases are on in every commutation step.
3. Adjustable speed: Smooth speed control ispossible.
4. Higher efficiency: A permanent magnet in the rotor reduces efficiency loss and increases theefficiency.
5. Better heat removal: The heat generated in the stator is dissipated easily as it is outside of the rotorunlike the brush DC motor.
6. Noiseless: Because of the absence of brushes the operation is noiseless.