Since the 1980s, many universities and research institutes have successively carried out research on switched reluctance motors. In the end, after three years of research by a private enterprise in Shandong, the first batch of 90 sets of products were successfully developed and put on the market——

    In the water supply and heating workshop of Shandong Xinhua Pharmaceutical Co., Ltd., Director Li of the workshop was quite satisfied with the energy-saving effect of the switched reluctance motor: "The time of gas supply and water supply during the day, the fluctuation of water consumption during the day, and the fluctuation of gas volume were the biggest headaches for our Xinhua Pharmaceuticals. When the production volume is large, the power of the motor cannot keep up with the low pressure, which affects the production; when the volume is small, the pressure is too high, which not only consumes energy, but also damages the facilities. After the three switched reluctance speed regulating motors are applied, all requirements can meet the standard , the average monthly energy saving per unit is 10%, and the annual capital saving is more than 100,000 yuan.”

In this regard, Chu Jianqing, deputy general manager of Shandong Kehui Company, one of the product developers, said: "A small switch can save more than 100,000 yuan a year. Its application in power motors can be said to have triggered a 'energy saving' revolution'."

  The maker of this "revolution" is Shandong Kehui Electric Co., Ltd., a private enterprise.

  Kehui Electric is not the only company in China that has tackled key problems in the speed regulation technology of switched reluctance motors. Since the 1980s, many universities and research institutes have successively carried out research on switched reluctance motors, among which there are many well-known experts, but not too many have persisted, and fewer have formed industrialization.

  What is switched reluctance motor technology? Why does the switch-type reluctance motor speed regulation technology attract the attention of many experts? In fact, the switched reluctance motor speed control system is a typical mechatronic product based on modern power electronics and microcomputer control technology. It consists of a switched reluctance motor and a microcomputer intelligent controller. Its biggest advantage is speed regulation. Wide range, high efficiency, good energy-saving effect, small starting current and large starting torque, it can maintain high-efficiency operation not only in the rated output state, but also in a wide range of speed regulation.

  Relevant experts pointed out that the electric motor is the most important electric energy consuming equipment. In my country, the electric energy consumed by small and medium-sized electric motors accounts for more than 60% of the national power generation, among which the application of speed-regulated electric motors accounts for about 20%. Under the tense situation, the mainstream of the speed regulating motor market is still the traditional winding motor, DC motor, electromagnetic speed regulating motor and other speed regulating systems with large power consumption and low efficiency. The variable frequency speed control system, which came out in the 1980s, is still the leader in the speed control market. However, due to the limitation of the working principle of the AC motor, there are insurmountable difficulties in technical indicators such as starting torque and efficiency at low speed. .

  Shandong Kehui Electric Co., Ltd., as the first high-tech private enterprise in Zhangdian District, Zibo City, Shandong Province, has a domestic first-class development team of power electronic technology and microcomputer control technology and a flexible and efficient enterprise system. Zibo Traction Motor Co., Ltd. is an influential manufacturer of traction motors and large and medium-sized AC and DC motors in China. It has strong strength and complete motor testing capabilities in motor research and development, production and sales.

 The cooperation between the two giants and the strong support of Shandong University of Technology's technical theory make the switched reluctance motor speed control system maintain a leading position in technology in terms of technology and product performance. After three years of hard work, the first batch of 90 sets of products were successfully developed and put on the market this year.

 Shandong Xinhua Pharmaceutical Co., Ltd. is the first experimenter of switched reluctance motor. The time of gas supply and water supply, water use during the day, and the fluctuation of gas volume are unstable, which is the most troublesome thing for Xinhua Pharmaceuticals. When the three Kehui switched reluctance speed-regulating motors are applied, the average power saving per unit is 10%, and the annual capital saving is more than 100,000 yuan.

  Once the new technology is transformed into productivity, the power of science and technology will be fully manifested. After Zibo Thermoelectric Co., Ltd. and Shandong Qisai Textile Co., Ltd. have successively applied the switched reluctance motor speed control system, they have increasingly felt its advantages in speed control performance, energy saving and environmental protection. , the disadvantage of loud noise.

  Experts such as Yao Fusheng, an academician of the Chinese Academy of Engineering, and Li Fahai, a professor at Tsinghua University, praised its technical performance for reaching the international advanced level.

Tian Jiangtao, general manager of the switch motor business department of Shandong Kehui Electric Co., Ltd., said that the current contradiction between energy supply and demand is very acute. In the future, meeting the continuous and rapid growth of energy demand and the clean and efficient use of energy will pose a major challenge to the development of energy technology. Motor energy saving has undoubtedly become an important energy saving field with huge potential for mining. At present, the relevant parties have clearly regarded the switched reluctance motor as the key promotion technology in the motor industry. The switched reluctance motor speed control system developed by Kehui Electric Company and Traction Motor Company has been listed as a key energy-saving product recommended by the National Development and Reform Commission during the "Eleventh Five-Year Plan" period. This year, the company plans to develop 1,000 sets, striving to make Zibo an industrial base for China's switched reluctance motor speed control system.