Tag: bldc motor

The brushless DC motor is a device that converts electrical energy into mechanical energy. By consuming electrical energy, mechanical energy can be obtained to achieve certain needs. What are the applications of BLDC motors? Brushless DC motors can be used in the small home appliance industry. The most common electric fan is to use brushless DC motors to convert electrical energy into mechanical energy to turn the electric fan, bringing us coolness. In addition, lawn mowers in the garden industry and electric drills in the power tool industry all work with brushless motors.

Brushless dc motor
The brushless DC motor is composed of a motor body and a brushless motor driver. It is a typical mechatronics product. Because the brushless DC motor runs in a self-control mode, it will not add a start winding to the rotor like a synchronous motor started under heavy load under variable frequency speed regulation, nor will it cause oscillation and loss of step when the load changes suddenly. The permanent magnets of small and medium-capacity brushless DC motors now mostly use high magnetic energy level rare earth neodymium iron boron (Nd-Fe-B) materials.

Stepper motor
A stepper motor is a motor that converts electrical pulse signals into corresponding angular or linear displacements. Every time a pulse signal is input, the rotor rotates an angle or moves forward. The output angular displacement or linear displacement is proportional to the number of input pulses, and the speed is proportional to the pulse frequency. Therefore, the stepper motor can be called the pulse motor.

Working Principle of BLDC Motor
The BLDC motor is mainly composed of the motor body, position sensor, electronic commutation circuit and driver. The motor body is similar in structure to a permanent magnet synchronous motor, but it has neither cage windings nor other starting devices. The stator windings are generally made into multiple phases (three-phase, four-phase, five-phase and so on). The rotor is composed of permanent magnet steel according to a certain number of pole pairs (2p=2, 4...). In a brushless DC motor, the armature winding is arranged on the stator, and the permanent magnet poles are arranged on the rotor. The position of the armature winding of each phase of the stator relative to the magnetic field of the permanent magnet of the rotor is sensed by the rotor position sensor electronically or electromagnetically. Moreover, it uses its output signal to drive the corresponding power switch transistor connected with the armature winding through an electronic conversion circuit according to a certain logic program, and commutate the current switch to the corresponding armature winding. With the rotation of the rotor, the rotor position sensor continuously sends out signals, causing the armature winding to be continuously energized in sequence, and the energization state is constantly changed. As a result, the direction of the current flowing in the coil conductor under a certain magnetic pole is always the same, and the rotor keeps running.

ATO provides customized 100W to 15kW high torque brushless DC motors with reasonable price. They come with different square flange size, rated speed from 1000rpm to 3000rpm, work at 12 volt, 24 volt, 48 volt, 96 volt voltage. Matched BLDC controller is available here which has powerful functions to meet your needs. The price of our high torque BLDC motors is listed as table below, check and buy one you desired right now, motor parameters are customizable according to your requirements.

Generally, the wiring principle of brushless DC motor is basically similar. Next, we choose the model ATO-BLDC-40030 of ATO high torque BLDC motor and its matching controller ATO-BLDC-TH-G as examples to show you how to connect the motor to the controller and make the motor rotate.

Brushless DC motor (BLDC) replaces the mechanical commutator with electronic commutator, just because of the electronic commutator, the BLDC motor needs a controller to drive the circuit. ATO BLDC motor not only has a speed regulation performance as the DC motor, but also has the advantages of simple structure, no commutation spark, reliable operation and easy maintenance as the AC motor, so it’s widely used in industrial equipment, instrumentation, household appliances, robots, medical equipment and other fields. The commutation circuit of BLDC motor consists of two indispensable parts: drive and control. Particularly, the two parts are integrated into a single ASIC for low power circuit.