3300v mining explosion-proof and intrinsically safe permanent magnet synchronous frequency conversion and speed regulation all-in-one machine

Abstract

A 3300V mining explosion-proof and intrinsically safe permanent magnet synchronous frequency conversion and speed regulation integrated machine, including a permanent magnet synchronous motor, a frequency converter and an input filter box, the frequency converter is installed on the upper part of the permanent magnet synchronous motor, and the permanent magnet synchronous The rear end of the motor is equipped with an input filter box; the frequency converter includes a rectifier module, an energy storage capacitor module, and an inverter power module that sequentially process the current, and the energy storage capacitor module and the inverter power module are connected by lamination The bus bars are separated; the input filter box is connected with the rectification module. The invention reduces the manufacturing cost of the equipment, can make the output current of the inverter smoother, can significantly reduce the influence of the harmonic voltage and the instantaneous impact voltage on the permanent magnet synchronous motor, and reduces the overall volume of the frequency converter, and the protruding terminals are used for hooking The laminated busbar on the inverter power device is beneficial to the overall disassembly and installation of the workshop production and assembly personnel and after-sales service personnel.

Description

technical field [0001] The invention relates to a frequency conversion speed regulation motor, specifically, a 3300V mining explosion-proof and intrinsically safe permanent magnet synchronous frequency conversion speed regulation integrated machine. Background technique [0002] At present, in underground coal mines, most of the 3300V voltage level mining equipment (such as scraper machines, reloaders, and belt conveyors, etc.) use drive inverters that are separate from the motors. Drive equipment cannot be used in many space-constrained coal mine faces. [0003] Some manufacturers have successfully developed an all-in-one variable frequency motor that integrates the asynchronous motor and the frequency converter, which can solve the problem of the overall size of the frequency converter plus the motor being too large. However, due to the high power supply voltage of 3300V and the current technical bottleneck of the current manufacturing and production of high-voltage frequ...

AI Technical Summary

Problems solved by technology

[0006] In view of the problem that the frequency converter separated from the motor has a large volume and occupies too much underground space, or the frequency conversion motor produced by some manufacturers integrates the asynchronous motor and the frequency converter, and the motor used is a special asynchronous motor, which is not conducive to Due to the problem of technology popularization and the disadvantage that the reliability of the frequency converter is difficult to guarantee, the present invention provides a 3300V mining explosion-proof and intrinsically safe permanent magnet synchronous frequency conversion and speed regulation integrated machine, which is based on a three-level electrical topology "Permanent magnet synchronous frequency conversion and speed regulation integrated machine" with permanent magnet synchronous motor

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