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A motor company’s R & D personal expected that as for domestic air-conditioning duct manufacturer’s brushless DC fan motor technology, the eventual adoption of the situation should not be many this year. It is basically the same with domestic air conditioner manufacturers’ prediction. The person thinks that now belongs to the industry transition. At least in the next year, brushless DC motor application in the fixed-frequency air-conditioning will be “eyes of the beholder, the wise see wisdom.”

  However, the major motor manufacturers set up factories in China, such as the Japanese Panasonic, and China’s Wolong Shibaura, Welling, Zhongshan ocean, Hisense Yingjia are dedicated to their own transformation and the promotion of brushless DC motor. The DC brushless motor is rarely applied in the industry before, but it can be expected that with the improvement of fixed-frequency air-conditioning energy efficiency levels, the proportion of DC brushless motor would be greatly enhanced.

This year the amount of brushless DC motor is not many, the next three to five years the application of the brushless DC motor blowout. Although the importance of air duct fan motor air conditioning companies are increasingly recognized, but most of the domestic air conditioner manufacturers are not use new brushless DC motor technology in aspects of the wind tunnel fan motor. A major motor of domestic R & D personnel analysis to the “China Electronics News” reporters that, of which there are several reasons: First, the changes in the industry need a process. Air conditioning manufacturers will eventually use the DC brushless motor.” He said, “But the transformation, research, development and production of it need a process.”

This year in March, the State General Administration of Quality Supervision, Inspection and Quarantine, the Standardization Administration issued a “room air conditioners limit value of energy efficiency and energy efficiency rating” mandatory national standards. New standards require that starting from June 1, 3, 4, 5-class on the market today fixed-frequency air-conditioning will be banning the production and sales

For new energy efficiency standards, some domestic air-conditioning R & D personnel of large enterprises said frankly that have some difficulties to achieving higher energy efficiency standards at a reasonable cost. However, some Japanese enterprises said that they felt to reach a new level of energy efficiency is not difficult, because the energy efficiency of their existing products have already reached the current level of 2 or above, An industry source said the Japanese-funded enterprises in air conditioning energy saving technology has been at the front. At present, the Japanese air conditioning compressor and electrical motor manufacturer account for a large proportion of the factory, although in recent years, the output of these companies has grown rapidly in China, but in fact mostly of them used Japanese factory equipments. And Japanese factory equipment were updated all of these years, they established brushless DC motor as the representative of the new technology workshop, enterprises have not yet mastered the advanced core technology, so it is hard for Chinese brushless motor manufacturers to develop and produce brushless motor.

Although the compressor and heat exchanger is confirmed, the general level of energy-saving air-conditioning has been confirmed, but the motor like we usually wind tunnel called “the last straw breaks the camel.” During the coming year, brushless DC motor in the fixed-frequency air-conditioning on the application will be “eyes of the beholder, the wise see wisdom”, but in later years, Brushless DC motors’ applications will blowout. This will bring new opportunities for semiconductor companies. A dedicated motor controls chip in the past mainly concentrated in the hands of Japanese suppliers, and after the controller using MCU (MCU) or DSP (digital signal processor), there will be more semiconductor companies benefit from it.

Because the controller can be placed in an external motor controllers interface with the machine as a whole to better connect the air conditioning companies designed their products faster, and such being this case, the overall costs can be reduced. Thus, from the air conditioning business point of view, brushless motor manufactures are more willing to choose MCU to program their own development.

Dedicated ago, motor controls in the past mostly focused on Japanese chip suppliers such asHitachi, Sanyo, Sanken and Roma and so on. It is reported that the market mainly produce electronic and Renesas MCU-based STMicroelectronics. Semiconductor industry provide 8-bit products for low-end,  to provide low-cost 16-bit or 32-bit products for sine and other more complex vector calculations.

A group from the NationalInformationCenterstatistics shows that in 2009 total retail sales of domestic air conditioning market were 23.2 million units, which inverter air conditioner is more than 250 million units, fixed-frequency air-conditioning and inverter air conditioner sales ratio of 8:2, it showing that given frequency of the domestic market still accounts for the bulk of air-conditioning. If the fixed-frequency air-conditioning duct fan use DC brushless motor, it will provide thousands of pieces of sales for semiconductor chip manufacturers. In response to this trend, some of the original dedicated motor controls chip MCU supplier also plans to develop products for better market share. This will shorten the development time for brushless motor.

An air-conditioning staff said that the cost of brushless DC motor increases with the introduction of rapid decline in the amount. Because the production of brushless DC motor can mechanization. Once mass production, its high cost would decline greatly, He said, “So, the key is problem the bulk.

 DC brushless motor drive technology is currently the most active companies in the semiconductor vendors, Air conditioning themselves more willing to choose MCU Programming. After Duct fan use DC brushless motor technology, it need to control the operation of the brushless DC motor controls, which gives semiconductor companies brings new business opportunities. Thus, the development of brushless will benefit to many people in motor line.

Domestic air-conditioning R & D analysts said. Although the gross profit margin of DC brushless motor is higher than the traditional brush motor, but in a sense, the motor manufacturers are working for semiconductor companies. New motor technology gross profit margin is not as high as the motor controllers.

Moreover, in the air conditioning industry, the demand for the controller chip is also changing, Main controllers are dedicated chip and MCU / DSP two kinds, In the early days, Motor manufacturers have integrated controllers in the motor, they generally select the specific controller. Now, some air conditioning companies want to put the motor outside the controller, especially for fixed-frequency air-conditioning, such trends are becoming apparent.

On July 6, the world’s largest manufacturer of servo motors – Yaskawa Electric Corporation invested in the construction Yaskawa Electric (Shenyang) Co., Ltd put into production. Mayor Chen Haibo attended the ribbon-cutting ceremony and delivered speeches.

  Yaskawa Electric Corporation was founded in 1915, has been ranked top in the field of servo motors and robotics in the world. Yaskawa Electric (Shenyang) Co., Ltd as its wholly-owned enterprises, the project started construction in April 2009, it put into operation to achieve the annual output value of 3.5 billion Yuan, the annual output of the world’s top servo motor controller reach 45 million sets. Yaskawa servo motor built new production base in Shenyang not only for their own development to expand the new field, but also to accelerate the expedients of new fields in Shenyang, and it also play an important role in the revitalization of north china.

Servo motor belongs to control motor; it is divided into a DC servo motor and AC servo motor two types. Due to AC servo motor with a small, light weight, high torque output, low inertia and good control performance feathers, thus it has been widely used in automatic control systems and automatic detection system as the implementation components and the control signal is converted to mechanical shaft rotation. the servo motor’s positioning accuracy is very high, the modern position control system has been increasingly used to servo motor as the main components of the position control system. The design here is closed by controlling the relay, disconnect, and to control the pulse width of the size of the objective of non-standard through the closed loop AC servo motor controlled sliding displacement of the magnetic block, using magnetic field to reach the motor controls speed purposes.