Overall control method, device and equipment for multiple linear induction motors

Abstract

The invention discloses an overall control method, device and equipment for multiple linear induction motors and a computer readable storage medium. A function of a secondary length ratio in a primaryrange of a linear induction motor is used as a dynamic coupling factor. The method comprises the steps of: determining the dynamic coupling factor of each linear induction motor according to a presetrule; establishing a single linear induction motor mathematical model of each linear induction motor according to each dynamic coupling factor; establishing an overall mathematical model of each linear induction motor according to the connection relationship between the linear induction motors and the mathematical model of each single linear induction motor; and obtaining an overall mathematicalmodel with higher accuracy compared with the prior art by considering the influence of the change of the electromagnetic coupling degree of the primary and secondary stages of the linear induction motors on the parameters of the linear induction motors, performing overall control over the multiple linear induction motors according to the overall mathematical model, and performing accurate controlfor the working conditions of the multiple linear induction motors of different types under different connection modes.

Description

technical field [0001] The present invention relates to the technical field of mechanical control, in particular to an overall control method, device, equipment and computer-readable storage medium for multiple linear induction motors. Background technique [0002] In the industry, linear induction motors should be mostly used in the case of a single inverter with multiple linear induction motors. Usually, multiple linear induction motors share a secondary reaction plate, such as low-speed maglev trains in advanced rail transit and electromagnetic ejection in national defense applications, etc. . In these applications, the total thrust and energy efficiency are the control targets. In order to obtain high-performance control effects, the inverter needs accurate overall mathematical models and electromagnetic parameters of multiple motors, so the overall modeling and electromagnetic parameter extraction of multiple linear induction motors are very important. [0003] The ex...

AI Technical Summary

Problems solved by technology

However, in the case of multiple short-secondary linear induction motors connected in parallel, the degree of electromagnetic coupling between the primary and secondary of a single motor changes momentarily, which will affect the overall impedance of the motor

Therefore, the overall modeling control method of multiple linear induction motors in the prior art cannot accurately establish the overall mathematical model and electromagnetic parameters under the parallel connection of multiple short secondary linear induction motors, which is not conducive to the control of this working condition

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