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Emil Jiangxi Power Company Limited HJV700 series inverter AC motor, particularly squirrel cage induction motor, with small size, light weight, simple structure, easy maintenance, low manufacturing costs and operating costs, can operate reliably in harsh environments and a series of advantages . But in the past due to the difficulty to achieve speed governor or some way inefficient enough for you, therefore, for a long time still occupied in the field of DC speed governor, advantages AC motor drive in the governor failed to get to play. Until the early 1970s, with the rapid development of power electronics, microelectronics (integrated circuits) and computer technology, people have been longing for Frequency HJV700 Series Frequency AC motor is implemented HJV700 Series Frequency AC motor industrial production. The so-called frequency converter - convert three-phase power frequency (50Hz) AC power (or any power source) into a three-phase voltage adjustable, adjustable frequency AC power, sometimes in turn called variable voltage variable frequency inverter means VVVF. Mainly used for AC motor (asynchronous or synchronous machine) speed adjustment HJV700 Series Frequency AC motor HJV700 series variable frequency AC motor. An AC motor frequency control system AC by the inverter drive motor and controller has three major components. The key core equipment is the inverter, which it has to achieve a smooth variation of the motor voltage and frequency. Frequency in the FM range, static accuracy, dynamic quality, system efficiency, perfect protection, easy to implement automatic control and process control and other aspects of a conventional speed regulator, pole-changing control, cascade control, sliding droop and fluid coupling speed, etc. can not be compared. It is recognized as the best of the most promising AC motor speed control programs on behalf of the future development of electric drive HJV700 series inverter AC variable frequency AC motor motive HJV700 series direction. Frequency of nearly thirty years has been widely used in iron and steel, metallurgy, petroleum, chemical, textile, chemical fiber, light industry, paper, rubber, plastics, electricity, water and other industries. Low voltage motors Frequency applications are very popular and mature. High voltage motor frequency control and attention is also being gradually applied. Frequency AC motor speed control in addition to outstanding performance, there is a significant energy saving and environmental protection an important role, is the ideal speed enterprise technological innovation and product upgrading HJV700 Series Frequency Inverter AC motor cross HJV700 series flow motor assembly. Frequency and wind HJV700 Series Frequency AC HJV700 Series Frequency AC motor DC motor pump energy-saving machine ?? HJV700 series inverter fan pump frequency AC motor speed control the energy efficiency of the motor total installed capacity of 450 million kW, about 65% of electricity consumption nationwide . So how to achieve energy-saving electric motor is very important. General electrical energy has two ways: One is to increase the efficiency of the motor itself, achieve long-term efficient operation, mainly for constant speed machinery; the other is to improve the control precision motor speed, the motor running in the most energy-efficient speed. Frequency is the best fan pump energy. The fluid theory, centrifugal fan pump shaft power is a function of the cube of speed. When the speed is reduced, the power consumption will be substantially reduced, for example, 50% speed, shaft mechanical power is only 12.5%. Of course, different, efficient speed programs vary widely, slip rear hydraulic control devices efficiency is not high, η≈ (1-S), at 50% speed, ηvs≈50%, while the efficiency of the inverter, efficiency factor is high, ηvvvF≈95% ~ 98%, and approximately constant. So many speed frequency control energy efficiency programs best, should the preferred option. Jiangxi Huajian Power Industry Co., Ltd. to develop a market for frequency control HJV700 series inverter. Products from single-phase to three-phase power comprehensive coverage from 0.2KW-600KW, offers a variety of selection and configuration, become one of the manufacturers of frequency control solutions provider of choice in the market. ????