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The introduction of the DC brushless motor

time2012/08/29

Currently, in the scope of the small power brushless DC motor is the rapid development of the new motor. Various areas of application requires its own unique DC brushless motor, so many types of brushless DC motor. There are generally computer external memory, and VCD, DVD, CDs and the spindle drive a flat coreless motor structure small ventilator with the outer rotor motor structure, appliance with a multi-pole magnetic structure and interior structure, the electric bicycle multi-pole, the outer rotor structure and so on. The motor itself and the circuit of the brushless DC motor into one, easy to use, and its production is also very large. In order to meet the high-volume, low-cost market needs, the production of brushless DC motor must be economies of scale. Therefore, the brushless DC motor is a high input, high-yield industry. At the same time, we should take into account the market is constantly evolving, such as home air conditioning motor is turning from 3A to 3D, requires a large number of small and medium power DC brushless DC motor, the research and development of small and medium power DC brushless motor has also become a top priority.

The brushless DC motor in order to reduce the moment of inertia, usually the structure of the elongate. The brushless DC motor brush DC motors smaller and more weight and volume than the corresponding moment of inertia can be reduced about 40% -50%. Due to processing problems of the permanent magnet material, resulting Usually the capacity of the brushless DC motor in the below 100kW.

The mechanical characteristics of the motor and adjust the characteristics of good linearity, wide range of speed, long life, easy maintenance, low noise, and there is no brush and a series of questions, this motor control systemlarge application potential.

Brushless DC motor based on PCA run, it will not be as heavy starting synchronous motor VVVF rotor plus start winding oscillations and out of step, it will not load mutation.

Brushless DC motors with DC brush motor characteristics, and also the frequency of changes in the device, they are called DC inverter, the international generic term the BLDC. Brushless DC motor running efficiency, low-speed torque, speed and accuracy than anyinverter control technology is even better, so it's worth the industry's concern that this product has produced more than 55kW, and can be designed to 400kW can solve the energy-saving and high-performance industry-driven demand.