3300V mining explosion-proof and intrinsic safety type permanent magnet synchronous frequency conversion and speed regulation all-in-one machine

Abstract

The invention relates to a 3300V mining explosion-proof and intrinsic safety type permanent magnet synchronous frequency conversion and speed regulation all-in-one machine. The 3300V mining explosion-proof and intrinsic safety type permanent magnet synchronous frequency conversion and speed regulation all-in-one machine comprises a permanent magnet synchronous motor, a frequency converter and an input filter box body; the frequency converter is installed on the upper portion of the permanent magnet synchronous motor; the input filter box body is installed at the rear end of the end of the permanent magnet synchronous motor; the frequency converter comprises a rectification module, an energy storage capacitor module and an inversion power module which are used for processing current in sequence; the energy storage capacitor module and the inversion power module are separated through laminated busbars; and the input filter box body is connected with the rectification module. According tothe3300V mining explosion-proof and intrinsic safety type permanent magnet synchronous frequency conversion and speed regulation all-in-one machine of the invention, equipment manufacturing cost is reduced; the output current of an inverter can be smoother; influence on the harmonic voltage and instantaneous impulse voltage of the permanent magnet synchronous motor can be remarkably reduced; theoverall size of the frequency converter is reduced; and protruding terminals are used for hanging the laminated busbars on an inverter power device, so that workshop production and assembly personneland after-sales service personnel can be facilitated to integrally disassemble and assemble the inverter.

Description

technical field [0001] The invention relates to a frequency conversion speed regulation motor, in particular to a 3300V mine flameproof and intrinsically safe permanent magnet synchronous frequency conversion speed regulation integrated machine. Background technique [0002] At present, most of the mining equipment with voltage level of 3300V (such as scraper, loader and belt conveyor, etc.) use drive inverters that exist separately from motors in coal mines. Drive equipment cannot be used in many coal mine faces where space is limited. [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, the power semiconductor devices are affected by the current technical bottleneck, and the most important thing is the v...

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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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