Brushless DC Motor
✒️ What is brushless DC induction motor?
✒️ Structure of brushless DC motor (BLDC)
✒️ Working principle of brushless DC motor
✒️ Brushless DC Motor For Sale
- 🔌 Brushless DC Motor in general on e-commerce sites
- 🔌 The top dealers(brands)selling Brushless DC Motor in the world Internet e-commerce marketplace
What is brushless DC induction motor?
Brushless DC induction motor (Brushless DC Motor) is a machine that uses direct current (DC) to create the communication between "electricity" and "magnetic field", rotation is achieved by electromagnetic induction phenomenon.
Basically, a brushless DC motor is similar to an alternating current (AC) induction motor, but with the difference that the current supplied to it is in the form of DC.
DC also feeds a brushless DC induction motor which is a time-varying form of current, but is referred to as DC current. That means a current rectifier by electronic circuitry is responsible for converting any input voltage signal to DC pulse form. Typically, the DC signal converted in a brushless DC induction motor is a square DC pulse, or a trapezoidal DC pulse.
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| Graph of the trapezoidal current supplied to the stator coil |
The brushless motor is an electric motor that relies on a permanent magnetic field and sensors to determine its position, completely without using brushes to help eliminate friction. From there, it helps to reduce the noise for the engine to operate smoothly, and at the same time save electricity.
Overview of induction motors for this type: 👉 DC motor (full)
Structure of brushless DC motor (BLDC)
As with conventional synchronous motors, the BLDC windings are spaced 120 degrees apart in the stator space. The magnets are firmly attached to the rotor body to excite the motor. The difference of the BLDC motor compared to other permanent magnet synchronous motors is that this device is required to sense the rotor position in order for the motor to work.
- Stator: Consists of iron core (electrical engineering steel sheets are insulated together) and winding. The winding of the BLDC is different from the winding of a conventional 3-phase AC motor, this special creates a trapezoidal reactance.
- Rotor: Basically, the rotor is no different from other permanent magnet motors.
- Hall sensor: Because of the characteristic of the trapezoidal anti-electromotive force, the typical control configuration of a brushless motor requires a sensor to determine the position of the rotor magnetic field relative to the phases of the stator windings. To do that, people often use Hall effect sensor, called Hall for short.
It is worth noting that the Hall sensor is mounted on the stator of the BLDC and not on the rotor.
.jpg "Structure of brushless DC motor (BLDC)") |
| Structure of brushless DC motor |
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| BLDC motor stator |
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| Brushless DC Motor |
Working principle of brushless DC motor
The DC pulses driving the windings on the stator will create a rotating magnetic field on the rotor with permanent magnets attached. This rotating magnetic field drives the magnets mounted on the rotor to create rotation.
As mentioned above, the operating principle of a brushless DC motor is quite similar to that of an AC induction motor. But the difference is that its rotor has five permanent magnets, and the DC current supplied to it is electronically processed to increase the efficiency of the motor.
Brushless motors do not transmit current to the rotor windings because the windings are not on the rotor at all. Instead, the main rotor is a permanent magnet, it has coils that do not rotate but are fixed in place above the stator. Since these coils do not move, neither a brush nor a commutator is needed.
In a brushless motor, the permanent magnet is rotated by changing the direction of the magnetic field generated by the coils arranged stationary around it. To control that rotation, you need to adjust the magnitude of the combined direction of the current flowing into these windings.
Brushless DC Motor For Sale
🔌 Brushless DC Motor in general on e-commerce sites:
Determining which type motor you need may not be an easy task. There are many different types available today. Before you order, there are a number of parameters that need to be addressed. So how can you properly accomplish this?
First and foremost you will need to know what voltage source is available in your application. Electric motors can be classified as either AC (Alternating Current) or DC (Direct Current). Alternating current types only run on AC Voltage and direct current types only run on DC Voltage. There is also a universal motor that can run on both AC and DC voltages.
Once you have established which power source you have you will need to determine which style will work for your application. AC motors can be sub-divided into the following: Single Phase Induction, Three Phase Induction, Two Phase Servo, and Hysteresis Synchronous. DC motors can be sub-divided into: Brushless DC, Brush DC, and Stepper types.
Next we need to understand the different characteristics of each type in order to properly match a motor to its application.
A single phase induction motor is connected to a single voltage line. An external capacitor is required to make this motor operate. The different types of single phase induction motors are distinguished by which method they are started. The four basic types are: split phase, capacitor start, permanent split capacitor, and capacitor start/capacitor run.
A brushless DC induction motor for sale can be found at a good price, right for you, at Amazon and Aliexpress. These motors are perfect for a wide range of applications, from electric vehicles to robotics. With their high efficiency and low maintenance requirements, brushless DC induction motors are the perfect choice for your next project.
- Brushless DC Motor For Sale #1: 👉 Brushless DC Motor on Amazon
- Brushless DC Motor For Sale #2: 👉 Brushless DC Motor on Aliexpress
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| Representative image for Brushless DC Motor on Amazon |
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| Representative image for Brushless DC Motor on Aliexpress - VEVOR Brushed DC Motor 1/2HP 90V 56C 1750RPM |
🔌 The top dealers (brands) selling Brushless DC Motor in the world Internet e-commerce marketplace:
Application of Brushless DC Motor to create free energy generator according to Nikola Tesla's genuine technology: Self-powered generator
Brushless DC motors have the following main applications:
- - Load application in variable: Used in home appliances, Dryer, air compressor.
- - Location of applications: Industrial control and automatic control applications.
But there is a special application that very few people know about. It is to create a free energy generator according to the genuine technology of Nikola Tesla.
💠 Harnessing the power of back electromagnetic fields (Back EMF)
💠 Back EMF generates Lenz's Force in generator 💠 When the output energy is not affected by the Lenz (free) force, a self-powered mechanism will be established from the AC generator head to the induction motor. And the kinetic energy of the induction motor at that time was only supposed to stir the Ether by Nikola Tesla's "Rotating Magnetic Field". That's the mechanism for a Free Energy AC generator - no fuel needed - Self-powered generator.
AC generator without fuel: Simple Energy Hack KILLS Power Bills And Generates Power On Demand
Free Energy AC generator 👆
Advantages and disadvantages of brushless DC motor
- Large air gap flux density.
- The machine power/mass ratio is relatively high.
- Great moment of inertia ratio (very rapid acceleration).
- Smooth, quiet operation at low or high speeds.
- Can accelerate and decelerate for a short period of time.
- High performance.
- Compact structure.
- The efficiency of conventional motors is only 70~75% while the efficiency of brushless motors can be up to 90%.
- Brushless motor has better speed control, suitable for high speed applications (over 10,000r/min).
- The brushless motor will save users the cost of maintenance, replacement of brushes and rims.
- A trapezoidal DC voltage signal to also power brushless DC induction motors is not available. Therefore, BLDC motor is less variable to mains with AC 50Hz / 60Hz
- Brushless motor is made from permanent magnet and Hall sensor to control motor speed and torque accurately, so it has a relatively high cost. However, with the trend of using brushless motors increasing sharply, the price also tends to increase.
💠 Harnessing the power of back electromagnetic fields (Back EMF)
💠 Back EMF generates Lenz's Force in generator 💠 When the output energy is not affected by the Lenz (free) force, a self-powered mechanism will be established from the AC generator head to the induction motor. And the kinetic energy of the induction motor at that time was only supposed to stir the Ether by Nikola Tesla's "Rotating Magnetic Field". That's the mechanism for a Free Energy AC generator - no fuel needed - Self-powered generator.
AC generator without fuel: Simple Energy Hack KILLS Power Bills And Generates Power On Demand
👉 Free Energy AC generator
