Multi-frequency converter speed regulation device for low-voltage large-power multi-branch AC motor

A technology of AC motor and speed regulating device, which is applied in the direction of AC motor control, electronic commutation motor control, electrical components, etc. It can solve the problems of high personnel requirements, large waste of manpower, low rolling efficiency, etc., and achieve a high degree of digitalization, The service life of the machine is prolonged and the speed regulation effect is good

Inactive Publication Date: 2016-02-03
CHONGQING YONGZHONG HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention provides an automatic rolling machine for bean sticks. The rolling machine realizes the movement of the rolling roller through machinery to solve the probl...

Method used

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  • Multi-frequency converter speed regulation device for low-voltage large-power multi-branch AC motor
  • Multi-frequency converter speed regulation device for low-voltage large-power multi-branch AC motor

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Embodiment Construction

[0014] The present invention will be described in detail below in conjunction with the accompanying drawings, as shown in the figure: a multi-frequency converter speed control device for a low-voltage high-power multi-branch AC motor in this embodiment includes a brushless doubly-fed motor 1, a motor connection frequency conversion device 2. The inverter feedback device 3, the end of the brushless doubly-fed motor 1 is provided with a manual control switch 4, the manual control switch 4 is connected to the hydraulic resistance governor 5, and the hydraulic resistance governor 5 is in frequency conversion The lower end of the tachometer 6 of the frequency converter, the frequency converter tachometer 6 is set on the upper end of the cage type feedback motor 7, the cage type feedback motor 7 and the output end 8 of the rectification unit are fixed with small screws, and the output end 8 of the rectification unit has Guiding function and inlaid with the first current detection uni...

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Abstract

The invention discloses a multi-frequency converter speed regulation device for a low-voltage large-power multi-branch AC motor, which comprises a brushless doubly-fed machine, a motor connection frequency conversion device and an inverting feedback device, wherein the tail end surface of the brushless doubly-fed machine is provided with a manual control switch; the upper end surface of the manual control switch is provided with a hydraulic resistance speed regulator; the outer part of the hydraulic resistance speed regulator is provided with a frequency converter tachometer; the frequency converter tachometer is embedded with a cage winding-type feedback motor; the cage winding-type feedback motor is connected with a rectifier unit output end via a wire; and the lower end of the rectifier unit output end is provided with a first current detection unit. Through reasonably using the motor connection frequency conversion device, various advanced mechanical devices are applied to achieve beneficial effects of high digital degree and good speed adjustment effects, the service life of the machine is prolonged, the structure is simple, the design is reasonable, and mass production is facilitated.

Description

technical field [0001] The invention relates to a frequency converter speed control device, in particular to a multi-frequency converter speed control device for a low-voltage high-power multi-branch AC motor. Background technique [0002] At present, my country's frequency converter speed control device industry is developing rapidly, and the equipment used for frequency converter speed control devices is also diverse, but it still faces challenges in many aspects, and needs to find solutions to meet customers. Application number: 201210090235.5 Chinese patent document reports a rotor frequency conversion speed control device, the specific content is: the present invention relates to the field of frequency converter speed control, in particular to a multi-frequency converter speed control device for low-voltage high-power multi-branch AC motors . The present invention overcomes the problem in the prior art of controlling the drive of the driving mechanism to the baffle to ...

Claims

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Application Information

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IPC IPC(8): H02P27/08H02P6/00
Inventor 吕本强
Owner CHONGQING YONGZHONG HEAVY IND
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