A kind of frequency conversion speed regulator for AC permanent magnet synchronous motor with direct current power supply for mining

Abstract

The invention belongs to the technical field of variable frequency speed regulation control, and specifically relates to a variable frequency speed regulator for an AC permanent magnet synchronous motor of a mining DC power supply, including a speed governor, and the speed governor includes a vibration chamber, a heat dissipation chamber, and a speed regulation knob and the adjustment button, one set of the vibrating spring is located at the bottom of the vibrating chamber, the lower end of the vibrating spring is fixedly connected to the vibrating chamber, and the upper end of the vibrating spring is fixedly connected to the pressing plate; The vibration chamber is fixedly connected, and there are air guide holes on the air-collecting airbag and the elastic membrane; the sealing plate is located on the side of the vibration chamber, and the sealing plate is used to seal the vibration chamber. There are air inlet holes on the sealing plate, and two sets of cams are arranged along the rotating shaft. The cam is fixedly connected with the rotating shaft, and the upper surface of the cam far away from the air inlet hole is provided with a push rod, which is fixedly connected with the pressure plate; the rotating shaft is fixedly connected with a torsion spring, and the rotating shaft is connected in the height-adjusting chamber in rotation; a rotating plate is hinged in the heat dissipation chamber; The gas entering the governor is kept dry and clean, ensuring the working environment inside the governor.

Description

technical field [0001] The invention belongs to the technical field of frequency conversion and speed regulation control, in particular to a frequency conversion speed regulator for an AC permanent magnet synchronous motor with a direct current power supply for mining. Background technique [0002] The frequency conversion speed controller is a device that converts the power frequency power (50Hz or 60Hz) into AC power of various frequencies to realize the variable speed operation of the motor. The control circuit completes the control of the main circuit, and the rectifier circuit converts the AC into DC. The DC intermediate circuit smoothes and filters the output of the rectifier circuit, and the inverter circuit inverts the DC power into AC power. [0003] At present, the use of AC motors to replace DC motors has become the mainstream direction of the development of modern power transmission and servo systems. The motors commonly used in AC drive systems mainly include s...

AI Technical Summary

Problems solved by technology

[0005] Although this kind of technical solution has the advantages of simple hardware structure, reliable operation, and low cost when used; Short life and other problems, for this reason, we proposed a mining DC power AC permanent magnet synchronous motor frequency converter to solve the above problems

Images