Forced air cooling device and method for linear induction motor used for middle-and-low-speed magnetic-levitation train traction

Abstract

The invention discloses a forced air cooling device for a linear induction motor used for middle-and-low-speed magnetic-levitation train traction. The device comprises an air channel arranged above a primary iron core of the linear induction motor, wherein the air channel is arranged in the length direction of the primary iron core, at least one end of the air channel is provided with cooling fans, the air channel comprises two or more suspension bending plates and a covering plate, the suspension bending plates are symmetrically mounted on the two sides of the width direction of the primary iron core, and the covering plate covers the suspension bending plates arranged on the two sides of the primary iron core to form the closed air channel. The invention further discloses a forced air cooling method for the linear induction motor used for magnetic-levitation train traction. The forced air cooling method and device for the linear induction motor used for middle-and-low-speed magnetic-levitation train traction have the advantages that installation space is small, primary heat dissipation of the motor can be improved, primary weight of the motor is reduced, motor output is improved, and then energy consumption during operation of magnetic-levitation trains is reduced.

Description

technical field [0001] The invention mainly relates to the field of maglev train control, in particular to a forced air cooling device and method for a linear induction motor used for traction of a medium-low speed maglev train. Background technique [0002] Maglev trains are also called maglev trains, maglev trains, maglev vehicles, maglev transportation, etc. The medium and low speed maglev train has the advantages of low noise in operation, strong climbing ability, adaptable to small-radius line turning, environmental protection and energy saving, and is a kind of urban or suburban transportation with broad application prospects. Linear induction motor, also known as linear asynchronous motor, linear asynchronous motor, linear induction motor, traction linear induction motor and so on. Among them, a straight line is sometimes called linear, such as a linear induction motor. [0003] After the medium and low-speed maglev train is energized through the U-shaped levitation...

AI Technical Summary

Problems solved by technology

After the first cooling air 105 enters from the first cooling fan 104 above, it enters the first ventilation duct 1, and then flows out from the ventilation windows of the protective shell 103 on both sides of the first primary iron core 101. It can be seen that the first primary iron core 101 in the prior art A cooling air 105 for heat dissipation enters the first air duct 1 from top to bottom, and is diverted when encountering the frontal resistance formed by the first primary iron core 101 , and the diverted first cooling air 105 passes through the first air duct 1 The two ends flow out, resulting in a decrease in cooling capacity and affecting the heat dissipation effect

In this structure, the first primary iron core 101 of the motor, including the first winding end 102, is wrapped by the motor protective shell 103, which occupies a large installation space, the heat dissipation component is heavy, and the entire primary motor is heavy, so the existing traction The forced heat dissipation structure of the linear induction motor is not suitable for the application environment of the linear induction motor used for the traction of medium and low speed maglev trains

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