Air conditioning applications As the largest purchase of inverter controller, inverter controller manufacturers are most concerned about the important market. After the implementation of the APF new inverter energy efficiency standard in October 2013, the sales volume of inverter air conditioner market has been increasing, and various air conditioner manufacturers have adjusted the product mix one after another. In the new products listed in 2014, the proportion of inverter models has remarkably increased.
Industry online data show that in the freezing year 2014, inverter air conditioner output was 43.43 million units; sales of 42.57 million units, an increase of 34.2%. Among them, the domestic sales of 34.93 million units, an increase of 39.1%; exports of 7.64 million units, an increase of 15.6%. In the meantime, sales of inverter compressors were 53.28 million units, an increase of 47.8% over the same period of last year. Among them, the domestic sales of 48.3 million units, an increase of 48%, exports of 4.98 million units, an increase of 47.9%.
It is understood that the inverter air-conditioning technology, expanding the scope of the compressor does not require compressor operation in the intermittent state can be achieved cold and warm control, to reduce energy consumption and eliminate human discomfort caused by temperature changes, And improve the smooth operation of the whole machine, reduce noise, these technical advantages have been recognized by air-conditioning manufacturers and consumers in general, inverter air conditioner market promotion in recent years, sales on track. Relatively mature supporting environment, technology upgrades inverter controller plant is the key to market share.
According to reports, the current International Rectifier (hereinafter referred to as IR) inverter control products in the field of air conditioning applications the largest number of Li Ming, director of Xi'an Application Center, said: "In the market competition, IR's competitiveness is mainly reflected in technological innovation and cost control capabilities Two aspects.Technology, with the increase in the function of home appliances, inverter controllable items are also increasing range, to enhance the integration of the control system has been improved.In cost control, both controller and power devices, IR has done a lot of detailed research and development work.For example, IR inverter controller from the 300 series to the current 100 series, and the upcoming 99 series, the supply price gradually declined.
Ningbo German industry Frequency Technology Co., Ltd. under the German Technology Group, air-conditioning inverter controller accounts for the company's overall business ratio of 60%. At present, the German industry uses an extended mathematical model of permanent magnet synchronous motor, the establishment of a new rotorless flux estimation model and algorithm to improve the smooth operation of the compressor, the compressor can be controlled at low frequencies below 11Hz, than the current market Widely used 180 ° sine wave frequency conversion technology is better. At the same time, the German industry also uses high-speed, current closed-loop control, improve compressor demagnetization, extend the life of air-conditioning compressor, and through torque flux control technology to improve the scope of compressor operation, improve system reliability and a series of Auxiliary algorithms to ensure the reliability of the machine running and excellent results.
During the interview, Qian Songjun, director and consultant of Hangzhou Xianfang Electronics Co., Ltd., told the reporter that "frequency conversion is the development trend of heat pump and even the whole refrigeration and air-conditioning industry. DC inverter is the most effective energy-efficiency upgrade direction of heat pump products and can greatly increase Winter heating, but also can increase the safety and reliability of the product.Currently, the way for the whole plant to provide a variety of heat pump system with variable frequency technology control programs, has begun to test and use in the mainstream manufacturers.
O-BELL is committed to the application of foreign advanced semiconductor product development and marketing, mainly engaged in the design and development of home appliances systems and related semiconductor sales. At present, O-BELL provides air-conditioning inverter control program using IR's latest iMOTION motion control chip IRMCK341 as a development platform, coupled with SANYO's PFC module and IR IGBT (IRGB15B60) together form a complete 180 ° sine wave DC inverter Air-conditioning solutions that can help air-conditioning machine to achieve superior performance.
For air-conditioning 整机 plant, as the core components, the reliability of inverter controller is crucial, directly related to the comfort and life of air conditioning. Some enterprises have found during the development of inverter air conditioner that if the temperature controller of inverter is too high, it will restrict the high-frequency operation of the compressor and even force the compressor to run at a reduced frequency, which will affect the refrigeration effect of the inverter air conditioner and the user's comfort. High temperature environment, if the frequency conversion controller cooling cooling program is unreasonable, but also lead to the inverter module is burned, affecting the normal use of air conditioners. In fact, details such as these often lead to serious consequences. A person in charge of frequency controller manufacturing enterprises stressed: "In the process of inverter controller matching machine, we must carefully consider the relationship with other components, structural design is reasonable and other issues to enhance the performance and reliability of the machine."
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