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The inventor of "three-dimensional permanent magnet motor", Ye Yunyue, a professor at the School of Electrical Engineering of Zhejiang University, said that the pumping unit is the main equipment for oil field production, and the pumping unit is driven by a large speed ratio reducer. From the analysis of equipment cost, because of the slow linear motion, the reduction gear box, the pulley, the beam of more than 20 meters long, the hoe, are all indispensable mechanical parts, and only one of the gearboxes has been The motor is equivalent; from the exercise cost, because the various intermediate links are eliminated, the reactive loss of the "three-dimensional permanent magnet motor" is reduced by 92.5%, and the power consumption is reduced by more than 50%. Not only that, because of the change in mechanical structure, a machine reduces the footprint by nearly one mu.
To explain the principle of "three-dimensional permanent magnet motor", we must start from the difference between traditional motor and linear motor. In 1821, the British scientist Faraday proved that electricity can be transformed into a rotary motion. Since then, DC motors and AC motors have been introduced, but they are all rotating during operation, suitable for rotating drives, such as cars, propellers and so on. But if you need to do linear motion, than
The world's first energy-efficient three-dimensional permanent magnet motor was successfully developed
The pumping unit with a huge hoe is not too slow to move up and down. It is a typical oil field landscape in people's minds. With the slow movement of the oil extraction machine, oil is proposed from the bottom of the earth and becomes an indispensable important energy for human modern life. However, the pumping unit itself is also a big appetite for eating electric machines. According to statistics, in Daqing Oilfield alone, the annual electricity consumption of traditional pumping units is 600 million. However, the number of deaf people that have lasted for many years is expected to decrease by 50% with the popularization of the "three-dimensional permanent magnet motor" developed by Zhejiang University.