Asynchronous starting permanent-magnet synchronous motor and asynchronous motor transformation method

Abstract

The invention provides an asynchronous starting permanent-magnet synchronous motor and an asynchronous motor transformation method, and belongs to the field of motors. The asynchronous starting permanent-magnet synchronous motor comprises a machine shell, a stator and a mouse cage rotor, the mouse cage rotor comprises mouse cage rings, a rotor pack, magnetic steel and copper bars, an air gap exists between the inner side of the stator and the rotor pack, the rotor pack is provided with four through grooves with rectangular sections, the through grooves penetrate through the rotor pack, the magnetic steel is embedded in the through grooves, one end of the magnetic steel is fixedly connected with one mouse cage ring, the distance from the axis line of a rotary shaft to the magnetic steel is larger than the diameter of the rotary shaft, and the through grooves are symmetric in a rotary mode. Both the asynchronous starting permanent-magnet synchronous motor and an asynchronous motor have self-starting capacity, can be started once being connected to a power grid, and are convenient to use. When the asynchronous starting permanent-magnet synchronous motor works, the copper bars and the mouse cage rings do not consume electric energy, so that electric energy loss is little, work temperature raises little, use cost of the motor is reduced, motor efficiency is improved, and start torque is increased.

Description

technical field [0001] The invention relates to the field of motors, in particular to an asynchronous start permanent magnet synchronous motor and a transformation method for the asynchronous motor. Background technique [0002] In recent years, with the rapid development of China's economy and the rapid improvement of people's living standards, our demand for energy is increasing, and our dependence on external resources is also becoming increasingly serious. According to statistics, my country's primary energy consumption in 2011 ranked second in the world bit. Energy issues not only have a great impact on the economy, but also inevitably cause a series of environmental protection issues. Therefore, energy issues have become a strategic issue affecting the development of our country. As the most important secondary energy source, electric energy must also be the most important energy-saving object. Among them, asynchronous motors are the most common electrical equipment, a...

AI Technical Summary

Problems solved by technology

When the asynchronous motor is working, the rotating magnetic field generated by the stator winding is not synchronized with the rotor winding. The rotor winding needs to absorb part of the electric energy from the power grid to excite and consume the power of the power grid. Larger, and the working temperature rises greatly, the life of the motor is shorter, resulting in an increase in the cost of use

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