Tag Archives: bldc motor controller

S mine fan bldc motor three frequency high-voltage electric tricycle china application

Posted by on April 5, 2025 No comments

S mine fan bldc motor three frequency high-voltage electric tricycle china application
 
Abstract: A crystal by controlling the frequency control to achieve a level, no level adjustment in the electric tricycle china installation and large-scale mine owners bldc motor in the application.
Keywords: three-conversion,electric tricycle china installation

Specificity due to the production of coal, the mine ventilation system related to mine safety in production, so the ventilation system in the coal production has a pivotal position. As long supply line, starting pressure drop, maximum protection devices for safe and reliable start-up and standby bldc motor starter switch, the top priority is to enhance the system reliability. Yangquan Coal Mine in NZ in November 2006, new investment and operation of the main fan bldc motor for the GAF-type axial bldc motor (check the bldc motor by the largest coal mine in Asia through bldc motor controller). The main fan motor 10KV 5000KW bldc motor asynchronous motor. In order to better address the project encountered in starting the impact on the grid, and the problem of load impact, the system used by the Liaoning Rongxin Power Electronic Co., Ltd production of three self-developed high-voltage electric tricycle china frequency equipment.

1, electric tricycle china several Starting device

Divided by the motor starter schematic: 1, reduced voltage starting methods. Traditional vacuum motor starting methods are Y-Δ start, decompression starting auto transformer, reactor start-up and so on. These methods belong to a class start decompression start, there are obvious shortcomings, the process of starting a secondary impact of current. The current high-pressure common way for liquid resistance starter starter, SCR series decompression start. 2, variable frequency start method. With the development of IGBT technology, high frequency voltage levels and larger capacities, but because of the price factor has restricted its development.

Rongxin Power Electronic Co., Ltd., on the basis of the SVC successfully developed three high frequency electric tricycle china, it has three characteristic frequency stepless regulator.

2, three frequency high-voltage electric tricycle china technical principles and characteristics

High-voltage soft-start power supply and motor in series between the main circuit shown in Figure 1.
 
Figure 1 Main circuit diagram

Three frequency high-voltage soft-start technology, the first SCR in series, then by controlling the conduction angle of SCR to achieve a level FM, and non-polar voltage regulator functions. Starting early by controlling the valve in the SA, SB, SC was to achieve a turn-on frequency 12.5HZ, the motor of 1 / 4 the rated speed when the control valve SA, SD, SE switch to 25HZ, the motor to achieve 1 / 2 rated speed, through the control valve SA, SB, SC to complete the full range of the switching process, and ultimately reach the rated speed, the bypass is closed off electric tricycle china trigger pulse to complete the starting process. Throughout the starting process in the three frequency points, while adjusting the frequency, change the output voltage to maintain constant voltage to frequency ratio, so that you can ensure that the entire starting process, the starting torque to keep the rated torque of 80 -90%, while the starting current can be controlled at about 2 times the rated current. Starting torque, starting current, is a three-frequency high-voltage electric tricycle china’s largest technical characteristics.

3, S miners fan motor in the practical application.

Yangquan Coal Mine S is a new mine, it’s power capacity is 35KV, 10000KVA, because the grid is responsible for the underground, Inoue electrical equipment supply, so the grid is relatively small margin, in order to ensure the process does not affect the start Other devices running on the main fan starting current requirements are very strict. And because it is located in the high-gas area, which uses negative pressure was high winds axial bldc motor (two-stage fan is currently Asia’s largest mining axial bldc motor), the main fan motor power of 10KV, 5000KW. Throughout the starting process, showing the starting torque, starting current, a smooth start, the advantages of starting a short time. Measured data in Table 1.

bldc motor controller and its classification and criteria

Posted by on April 5, 2025 No comments

bldc motor controller and its classification and criteria:

bldc motor controller is mainly linear motor, it is a direct conversion of electrical energy to mechanical energy into linear motion, without any intermediate conversion mechanism of transmission.

bldc motor controller structure can be made as needed Flat, cylindrical or disk-based and other types, it can use AC power, DC power supply or other pulsed power supply to work. bldc motor controller can be in a few seconds to a few thousand kilograms of helicopter pulled several hundred kilometers per hour, it operate in a vacuum, its highest speed up to several thousand kilometers. In the military, people use it made of a variety of guns, and tried it for missiles, rockets; in the transport industry, people use bldc motor controller is made up of more than 500km per hour maglev train; in the industrial area, bldc motor controller is used in the production line for delivery, and a variety of horizontal or vertical movement of a number of mechanical devices. bldc motor controller and have a high-speed, high-thrust features, it also has a low speed, the other fine features, for example, stepping linear motors, it can be done step for the 1μn accuracy, therefore, bldc motor controller has been applied to Many sophisticated equipment, such as the computer’s head drive, camera shutter, automatic plotter, medical equipment, aerospace equipment, a variety of automation equipment, etc. In addition, bldc motor controller is also used for a variety of civilian installations, such as doors, windows, tables, chairs moving, door locks, electric curtains opening and closing, and so on.

hub motor controller working principle

Posted by on March 15, 2025 Comments Off on hub motor controller working principle

hub motor  controller electronic reversing device, instead of the traditional mechanical commutation device (commutator and brush), not only retained the DC motor speed control with good starting characteristics, and AC motor with simple structure and easy maintenance This motor in good, reliable, therefore, the rapid development in recent years. Traditional DC motor armature is rotated, the pole is stationary, but bldc motor driver in this contrast, the magnetic pole is rotated, the armature is stationary, the armature winding current commutation can make use of position sensors and electronic switching circuit to complete. Brushless motor. hub motor driver generally motors, position sensors, and electronic switch consists of three parts. Motor itself consists of multi-phase (three phase, four-phase, five-phase range) armature windings on the stator pole and a certain number of permanent magnet rotor component. AA, BB, CC, said three-phase motor stator windings, NS is a permanent magnet, the motor rotor, PS is the rotor position sensor, and its coaxial rotor and motor rotor is connected, BG1, BG2, BG3 electronic switching circuits power switch, three-phase windings A, B, C respectively, BG1, BG2, BG3 in series to the power supply after. Its operation principle is that a signal controlled by the PS BG1, BG2, BG3 and other switch on on and off, when the switch turns on, the corresponding stator windings, there is current and magnetic field through the magnetic field and permanent magnetic interaction between the rotor pole will generate torque, the motor rotor, the motor coaxial with the rotor position sensor is connected, it also followed the rotation of the rotor and in turn to BG1, BG2, BG3 signal to control the turn on and off, to the armature winding current with the rotor position changes according to the order of commutation, the magnetic armature rotary stepper motor’s rotor to rotate continuously go on.

bldc motor interaction principle

Posted by on March 12, 2025 Comments Off on bldc motor interaction principle

Based on the principle of rotation of the motor for the Fleming left hand rule, when a wire placed in a magnetic field, if the current through the wire, the wire will cut the wires generate the magnetic field lines move. Current into the coil creates a magnetic field using the current magnetic effect, the solenoid magnet at a fixed continuously rotating device that can convert electrical energy into mechanical energy. And a permanent magnet or by another group of the magnetic field generated by the coil to generate power bldc motor interaction principle is the stator does not move, the force generated by interaction of the rotor according to the direction of movement. bldc motor controller is on the alternating current through the stator windings, a rotating magnetic field, rotating magnetic field attracts the rotor rotates bldc motor with the basic structure include “armature”, “field magnet,” “slip ring”, “brush” . Armature: You can rotate around the axis of the soft iron core wound multi-turn coil. Field magnet: the strong magnetic field of permanent magnet or an electromagnet. Collector ring: coil about two to two semi-circular termination of slip ring, with the coil rotation for changing the current direction of the change to the device. Each half-circle rotation (180 degrees), the coil current to change direction once. Brushes: carbon usually made of slip ring brush contact with a fixed location to be connected to power.

BLDC motor controller basic principles

Posted by on January 7, 2022 Comments Off on BLDC motor controller basic principles

bldc motor controller is the leading voltage AC motor running, widely used in electric fans, refrigerators, washing machines, air conditioners, hair dryer, vacuum cleaner, range hood, dishwasher, electric sewing machines (to be found food processing machines and other household appliances and various electric tools, small electromechanical devices.

bldc motor driver is divided into induction motors and AC commutator motor. Divided into single-phase induction motor asynchronous motor, AC and DC motors and repulsion motor.

bldc motor driver basic principles:

(1) When access to three-phase AC induction motor three-phase power, three-phase stator windings generate current flow through the three-phase symmetrical three-phase magnetomotive force (the stator rotating magnetic momentum) and produce a rotating magnetic field.

(2) The conductor of the rotating magnetic field and the rotor has a relatively cutting exercise, according to the principle of electromagnetic induction, EMF and rotor conductors induced current.

(3) According to the law of the electromagnetic force, the current-carrying conductor in a magnetic field in the rotor by the electromagnetic force, the formation of the electromagnetic torque, driving the rotor rotation when the motor shaft with a mechanical load, then out the output mechanical energy.

BLDC motor control technology

Posted by on January 7, 2022 Comments Off on BLDC motor control technology

    In 2005, BLDC motor controller was developed, improved and upgraded to address the existing weaknesses in several electric vehicles, vehicle design to meet the consumers and the increasing demand for vehicle performance. It avoids the same maximum rated power output of a long, sustained the same frequency to reduce the impact of the motor, motor coordination and other systems, electric cars and stable work, greatly extending the life of electric vehicles.

    Equipped with a BLDC motor controller for electric vehicles in the cycling process, the inverter controller and inverter composed of high-efficiency motor power system, take advantage of low current, high-torque theory, in the process of riding in a timely manner according to traffic and load to adjust the output power .

    This technology works, the electric car start, climbing, a small motor current, torque, and increases the climbing ability and more power; and on a level road, the standard load driving the motor to a small current, high efficiency work, so fast, low power consumption, extend the continued line mileage.

    Install the BLDC motor system of the electric car as long as a power supply and speed, the car was immediately driven, and demonstrated a remarkable strong force, and unlike most of the electric car start when they “struggle” was a difficult time crawling This is the BLDC motor technology advantage.

    In July 2005, the Group introduced three BLDC motor MACAT electric cars, are very popular. Taiwan Tianjin growth of electric cars with electronic features brushless motor control system — electronic CVT systems, but also uses the same technology. This new motor system increases the motor torque constant, reducing the overload point, the motor phase current context, to effectively improve the speed of the motor rated load point.

    2007 by Locomotive Co., Ltd. Qing long developed similar to the motorcycle gear with three power electric cars is based on such frequency control technology.

    This technology effectively improve the electric vehicle drive system features a certain extent, solve the electric vehicle the problem of poor climbing ability, and easy manipulation of the user, complete electric car downshift speed and overall performance has made great breakthroughs .

BLDC motor vehicle idling is a component

Posted by on January 7, 2022 Comments Off on BLDC motor vehicle idling is a component

BLDC motor vehicle idling is a component. Referred to as idle the engine idling. Its role is: idle, according to the level of the engine temperature and load size, change the idle air channel cross-sectional area of ​​the engine under different conditions have the best idle speed.

BLDC motor controller is mainly used to bear the car idle, and its purpose is to be used according to the idle time to adjust the idle speed of engine load. Idle stepper motor mounted on the throttle body from the engine controller to control engine idle speed, engine speed deviation from the idle, the valve regulating flow from section to control the intake manifold into the air by the mechanical operation of the accelerator pedal steel wire rope . Throttle body with a bypass air channel, to provide air in the engine idling (when the throttle is closed). BLDC motor automatically pivot into his bypass air tract, which regulate air flow through the engine controller according to a variety of sensor inputs, the use of mobile automated BLDC motor controller for pivot out of the bypass air channel adjust engine idle speed. When the ignition key to open position, automatically BLDC motor to work. The switch signal input ECU, the engine is in idle perception condition. At the same time, real-time position in which the motor from the motor position sensor feedback to the ECU.

BLDC motor controller

Posted by on January 3, 2022 Comments Off on BLDC motor controller

BLDC motor is a rotary machine, BLDC motor controller ,It will transform electrical energy into mechanical energy, which includes a solenoid winding to generate magnetic fields, or distribution of the stator windings and a rotating armature or rotor, a current through the wire and leaving the rotation by the magnetic field, these machines Some types can be used for BLDC motor can also be used for generators. It is the electrical energy into mechanical energy of a machine. The BLDC motor is usually part of a rotary motion for power, this BLDC motor as the rotor BLDC motor; there in a straight line, called linear BLDC motor. BLDC motor can provide power range widely, from milliwatts to a million kilowatts. BLDC motor is very easy to use and control, self-starting, acceleration, braking, reversing, valves and shelter capacity, to meet various operational requirements; BLDC motor’s high efficiency, no smoke, odor, do not pollute the environment , the noise is also smaller. Because it’s a series of advantages, so in industrial and agricultural production, transportation, defense, commercial and household appliances, medical electrical equipment and other aspects of wider applicat

AC induction BLDC motor

Posted by on January 3, 2022 Comments Off on AC induction BLDC motor

Today’s domestic industrial control industry, for motors usually have such a view: low-end motor using AC induction BLDC motor, high-end motor servo motor. In fact there is a domestic motor applications skip the phenomenon, from the AC induction motor to jump directly to the BLDC motor controller, and the middle of the brushless DC motor is often ignored by people. Brushless DC motor as a DC brush motor characteristics, but also the frequency of the device, they are called the DC inverter, the international generic term for the BLDC. Unique brushless DC motor of high efficiency, low fever and other features and advantages, are in line with the national energy saving requirements. By comparison with some other motor, we can see these features more intuitive, and thus facilitate the selection of the motor when engineers select the most suitable motor, not the most expensive motor.

Brushless DC motor is also called BLDC motor

Posted by on January 1, 2022 Comments Off on Brushless DC motor is also called BLDC motor

No commutator motor (roasted Yuushidendouki choking, Brushless Direct Current Motor) is a DC motor with the same structure as the permanent magnet synchronous motor drive built-in power supply control circuit instead of the commutator . Brushless DC motor, brushless DC motors, also called BLDC motor. Brush DC motor with high efficiency, have been widely used because it is relatively inexpensive, can be miniaturized, have life by the brush wear due to the sliding contact. Therefore, the larger motors are required to maintain replacement brush, small brush if you can not be replaced, and the life of the motor brush life. No commutator motor is replaced by the role of electronic brush (brushless DC motor) is.

BLDC motor controller  Advantages

there is no commutator brushes, no need to maintain its long life.
There is no electrical brush noise.
There is no external contamination of the powder brush wear.
High-speed operation is possible because there is no contact parts.

Cons

for electronic circuitry, Environmental resistance and ambient temperature will depend on electronic components.
Expensive compared to brushed DC motor. If the current is high, especially for switching semiconductor devices are expensive