The use of brushless dc motor due to mechanical brush, mechanical friction, noise, electric spark, radio interference and a series of problems, coupled with high manufacturing costs and maintenance difficulties, thus greatly limits its application range. Brushless dc motor using electronic steering gear to replace the mechanical brush and commutator, keep the excellent properties of brush dc motor, and abolish the brush and commutator & otherStubborn & throughout; 。 It has a simple structure, reliable performance, high efficiency, convenient maintenance, etc. Brushless dc motor is usually composed of motor noumenon, the rotor position sensor and power switch circuit of three parts. The principle diagram of figure 1 is a brushless dc motor. Figure in the position sensor is used to detect the position of the motor rotor, provide electronic commutator rotor position information, the realization of the non-contact electronic commutation. Figure 2 -1 the inverter switch circuit adopts three-phase six conduction mode. Every moment has two phase at the same time conduction, another conduction or not, each phase winding continuous conduction 120 electric point of view, every 60 degree Angle of stator winding current commutation time. Motor clockwise rotation Angle of 360 degrees of electricity within the 3 position sensor signals of the state of the state from the 101 - character100 -110 -010 -011 -001 change. Change status word moment is the stator winding current commutation time is going to happen.
here see brushless motors KV value is defined as: RPM/V, means the input voltage increase 1 KV, brushless motor speed value of the idle speed increase. The brushless motor voltage input and motor idling speed is a strict linear proportional relationship, the value, the greater the voltage increases, the faster speed increases, the greater the KV value of motor, the greater the peak current, not the bigger the better, the torque will sacrifice, and peak power will be a big KV multiplied by the voltage is equal to the motor revolutions per minute. As to whether the higher the better, of course not, corresponding KV have corresponding torque can match the corresponding OARS. When purchasing brushless motor to the technical parameters of here don't understand, we all have our technical support on the surface of the side. Quick start and brake, high positioning accuracy, large overload capacity, low vibration, and realize automatic recovery of industrial sewing machine sewing, automatic pick and secant line three automatic control function. In addition, in the numerical control processing equipment, industrial intelligent robots, automated production lines, automatic textile, packaging, metallurgy, etc. , adopts brushless dc motor can satisfy the high precision, high efficiency, high performance of mechanical equipment. Some require speed and position control is mostly used in light industry machinery brushless motor.
in the application of precision electronic equipment and instruments
such as the need of orthopedic medical apparatus and instruments as a result of the surgery, can ask its power system in a wider scope of continuous variable speed, to adapt to the seam milling, drilling, sawing and other kinds of occasions. And existing orthopedic medical devices with a drive motor is single-phase ac/dc series motor and voltage regulator, its defect is large noise; Because the brush and the presence of phase switcher, cannot be disinfected before the surgery, can affect the effect in the operation; At the same time need regular replacement of brush and motor maintenance. As brushless dc motor drive system and application, with low noise, wide scope of speed adjustment, the advantages of small volume, light weight. Another dongguan yuntai brushless motor in computer hardware, floppy disk drive, video recorder drum drive, laser printers, photocopiers, satellite solar panels on the drive, use the ventilator, blood analyzer, medical monitoring equipment in the field of application is gradually replace a brush motor. The brushless dc motor size is small, high machining accuracy, belongs to technology-intensive, its demand is huge.
brushless dc motor or ac brushless motor according to the need to customize a variety of specifications, please contact us for details.
the advantages of the brushless dc motor, low noise design, high power, small type is rich, long service life.
the power 6 w to 120 w, reduction ratio from 1:3 to 1:2000. A single phase induction motor, three-phase induction motor; Continuous operation type, reversing, brake type; And permanent magnet dc motor.
a, single-phase induction motor
use capacitor induction motor can run continuously, high power and low noise.
2, reversible motor
with functions of instantaneous transformation and reversing almost never happen phenomenon is not allowed to switch. Because of adopting balance winding way and built-in simple braking mechanism. To a sudden transformation forward and inversion.
3, electromagnetic brake motor
the brakes, can short time depart for 2 ~ 3 in the absence of load transfer within the brake, play safe braking performance.
4, speed regulating motor
the speed controller is adjustable speed range: 90 ~ 1400 RPM, with speed sensor, inside the feedback control, so the power frequency have change, it should have no change of revolution.
5, three-phase motor, dc motor
with the speed of three-phase motor inverter can be regulated; Change the electric voltage can adjust the speed of dc motor, speed control functions.
customer below information selection, if you need detailed information can call customer service to send, before choosing brushless motor must inform power, wattage and speed ratio, if take reduction plus reducer. Just make sure these data can know the price of the motor.
