Research On Vector Control Based On Single Current Sensing And Instantaneous Power Control Of IM

The 21st century is the century of the energy and environmental protection. The coordination of energy development, resource using and environmental protection will be the basis for economic development in the 21st century. Electric energy is the motivation for the development of current civilization, which is also an important indicator for measuring a country's economic development and standard of living. The production and development of electric energy has been among the best in our country. However, because of technological backwardness, energy wasting is very serious. Energy saving is a long-term strategic approach for the development of China's economic and social. NDRC proposed the 10 major energy conservation projects, the fifth is motor system energy conservation and encouraging the promotion of the variable frequency speed regulation energy-saving technology. The paper focuses on induction motor VF drive technology and probes deep into vector control of induction motor based on single shunt current sensing and instantaneous power control of induction motor.First of all, the mathematical model on which the vector control theory of the induction motor is illustrated is expound. Meanwhile, SVPWM and the method of single shunt current sensing are exhibited, with rotor flux orientation vector control established. The simulation of the system has been done, experimental platform has been designed and the experiment has been done. The experimental results demonstrate the correctness and feasibility of the proposed scheme.Secondly, instantaneous power control of induction motor has been discussed. The simulation research has been done for this system, and the performance is also very well under this control theory.