Brushless dc motor as wild waves into various industries, become worthy of the motor industry rising star. Whether we can bold speculation --In the future, will enter the brushless motor industry age? Brushless dc motor without brush and commutator, so its name. Is composed of main body of the motor and drive, is a kind of typical mechatronics product. As a 'new man' motor industry, although the brushless dc motor to enter the Chinese history is not long, and high prices have a brush motor, but as a result of brushless motor obvious advantages, rapid development momentum. After entering China, quickly by household appliances, automobiles, ships and machinery and other industries preferred, and a place in the various industries, the rapid development. Brushless motor why can a place? Low price is the industry of brushless motor, that why it can short time in motor market a place? In fact, it has the same effect with the company, as long as it can ensure use effect and the quality can attract the loyal consumers. Such as apple's electronic products prices are now generally high, the market is still hot, obviously, when quality and price but can only choose one, have the purchasing power of consumers will give priority to use effect. Brushless motor how superior performance? First, the geometry of brushless motor structure is smaller, lighter weight, conforms to the market demand for light weight, good performance of the design of the product. Second, with the use of permanent magnets, the rotor without core loss, so the brushless motor is more efficient, at the same time, also can reduce the use of permanent magnet motor maintenance, prolong the service life of the machine. Third, the brushless motor is self-control type operation, when the load mutation generate and out-of-step oscillation. Through the use of appropriate transformation algorithm, can improve thermal performance, can achieve better motor speed range and response time, made it possible to better electromagnetic isolation, and torque response is better. To sum up is: small volume, light weight, long service life, high efficiency, low noise, small vibration, no spark, high reliability, good stability, strong adaptability, simple repair and maintenance. With excellent performance, quickly attracted a brushless dc motor with 'small, light, thin' of audiovisual products, mute appliances and luxury cars, such as the manufacturer's attention. Whereby countries are also accelerates the pace of development of brushless motor products and occupy the market. A Japanese company has been successful to brushless dc motor is applied to digital cameras, mini tape recorder, video camera, printer, mobile storage, mobile phone and car air conditioners, vacuum cleaners, electric cars, the heart pumps, and other fields. Now brushless dc motor has been able to fully replace the dc motor speed regulation, frequency converter, asynchronous motor + reducer + frequency conversion motor speed control. In a set all the advantages of traditional dc motor cancelled the carbon brush and slip ring structure at the same time, excellent torque characteristics. Medium and low speed torque performance is good, big start torque and starting current is small, stepless speed regulation, wide speed range, overload ability. And the conventional motor life is about ten thousand hours, the life span of the brushless dc motor is it several times. In addition, because there is no excitation brushless motor itself and the loss of carbon brush, eliminates the loss of multiple reduction, comprehensive energy-saving rate can reach % ~ %, so the price difference with normal motor just rely on electricity saving a can recover the acquisition cost of a year later, plus the government has been promoting energy conservation and environmental protection in recent years, brushless motors can be said to be the trend of the development of the motor. Believe that over time, the price will not become a stumbling block to block brushless motor to occupy the market. For the foreseeable future, brushless motor will be fully eliminated brush motor, motor products will enter the brushless era.
