Frequency converter control method and device, storage medium and frequency converter

A frequency converter control and frequency converter technology, which is applied in the field of frequency converters, can solve problems such as boom shaking, and achieve the effects of smoothly pulling up the load, avoiding boom shaking, and improving work efficiency.

Active Publication Date: 2020-03-27
SHENZHEN INVT ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The technical effect of this innovation is that it allows for precise control over the movement of an armature during operation by controlling its rotation based on certain parameters like velocity or acceleration. This helps maintain stable performance while avoids excessive vibration caused by external forces such as wind or waves. Additionally, the technology ensures safe lifting operations without causing damage due to unstable movements.

Problems solved by technology

This patented technical problem addressed during operation on an elevated platform called Tower Cranes: During these times where there are sudden changes or movements caused by pulling loads off from one section of the Platform's hoist line due to tensioning of the winch cable, causing safety concerns for workers who may also fall down with potentially harmful consequences such as damage.

Method used

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  • Frequency converter control method and device, storage medium and frequency converter
  • Frequency converter control method and device, storage medium and frequency converter
  • Frequency converter control method and device, storage medium and frequency converter

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude one or Presence or addition of multiple other features, integers, steps, operations, elements, components and / or collections thereof.

[0024] It should also be understood that the terminology used

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Abstract

The invention discloses a frequency converter control method, a frequency converter is used for controlling a motor to operate, and the method comprises the following steps: controlling the motor to operate according to a speed limiting frequency; judging whether the running time of the motor according to the speed limiting frequency reaches first preset time or not; if the running time of the motor according to the speed limiting frequency reaches first preset time, collecting a torque value currently output by the motor, and judging whether the torque value output by the motor is greater than a calibrated torque value or not; if the torque value currently output by the motor is not greater than the calibrated torque value, returning to the step of controlling the motor to operate according to the speed limiting frequency; and if the torque value currently output by the motor is greater than the calibrated torque value, controlling the motor to operate according to the target frequency. By implementing the embodiment of the invention, a crane jib can be prevented from shaking, the load is stably lifted, the safety of the tower crane is improved, and the working efficiency of the tower crane is improved.

Description

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Claims

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Application Information

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Owner SHENZHEN INVT ELECTRIC
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