Shenzhen Go-Gold Motor Co., Ltd.
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Lead time:
| Quantity | 1-1000 | 1001-10000 | ≥10000 |
| Lead days | 15 | 30 | To be negotation |
Product Description
| Rated Voltage | 12V | Rated Speed | 120000RPM |
| Rated Power | 103W | Torque | Customizable |
Essential details
Commutation: Brushless
Application:Vacuum Cleaner
Rated Voltage:12V
Rated Speed:120000RPM
Rated Power:103W
Vacuum degree:12 Kpa Max
Torque:Customizable
Diameter: 45MM
Key Word: BLDC Motor
Efficiency: 75%
Model Number: KG-4560DC12
Warranty: 3 Years
Place of Origin: Guangdong, China
Drawing
Sample
Application
The Brushless DC Motor is configured like a DC motor turned inside out with the permanent magnets on the rotor and the windings are on the stator. Because of the absence of brushes the disadvantages are eliminated such as sparking, noise, efficiency, and also enable very high speed compared to universal motors. These motors are also known as electronically commutated motors (ECMs or EC motors) and are synchronous motors that are powered by a DC electric source through an integrated inverter, which produces an AC electric signal to drive the motor. Additional sensors and electronics control the inverter output.
The commutation is electronically controlled. Commutation sequence and commutation time is provided by position sensor feedback or by any sensorless methods like back electromotive force (EMF) sensing. The BLDC motor is the ideal choice for applications that require high reliability, high efficiency, and high power-to-volume ratio. A Brushless DC Motor is highly reliable because it does not have any brushes that wear out and require replacement. When operated in rated conditions, the life expectancy of a Brushless DC Motor is over 10 000 hours.
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.