China household motor factory, price concessions, welcome to inquiry!In order to reduce noise pollution, household appliances are required to be "quiet".This is the first motor noise to be small.Some household appliances, such as split-type air conditioners, require very low noise. Although many measures have been taken to reduce noise and vibration in the design and manufacturing process of traditional electric motors, they are still unsatisfactory.Therefore, now there have been some very low noise, performance and good new motor, such as plastic sealing structure, brushless motor, etc..Since the birth of DC and AC motors in the 19th century, in the field of speed regulation, DC motor has always been known for its good speed regulation and control performance.In view of the simple structure and reliable operation of AC induction motor, people have long been committed to the research of its speed regulation technology, but all kinds of schemes have been unable to compete with DC motor.In recent ten years, due to the rapid development of power electronics and microelectronics technology.Especially fourth generation power electronics devices
-- The successful development of power integrated circuit (PIC) has made a breakthrough in AC speed regulation.In particular, the variable voltage frequency conversion (VVVF) technology has been put into practice, not only can it itself constitute a high dynamic performance speed regulation system, may eventually replace the DC speed regulation, but also promote the development of new motor.In household appliances, due to the need of function and fan, pump load AC speed regulation of obvious energy-saving effect and generally with speed regulation function.At present, because the requirement is not high in the product such as electric fan and vacuum cleaner, buck voltage is used commonly
In high value-added products such as air conditioners, with the application of fuzzy control technology, more and more tend to adopt high performance speed control system.
