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Energy control method and control device for a crane

A control method and energy control technology, applied in the direction of AC network load balancing, etc., can solve the problem of short life of slow discharge energy storage devices

Active Publication Date: 2019-05-17
WUHAN MARINE MACHINERY PLANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of short service life of the slow discharge energy storage device in the crane, the embodiment of the present invention provides an energy control method and control device for the crane

Method used

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  • Energy control method and control device for a crane
  • Energy control method and control device for a crane
  • Energy control method and control device for a crane

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Embodiment Construction

[0042] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0043] The crane is briefly described here for a better understanding of the present invention. The working process of the crane includes at least the lifting and lowering process of the hoisting mechanism. In the crane with the luffing mechanism and the slewing mechanism, it also includes the process of increasing, decreasing, accelerating and decelerating. In the process of acceleration and rotation, the motor of the corresponding mechanism is not braked, which will consume electric energy. During the process of lowering, increasing, and decelerating rotation, the motor of the corresponding mechanism is in braking, which will convert mechanical energy into electrical energy. Works independently with the rotary mechanism. For a singl...

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Abstract

The invention discloses an energy control method and control apparatus of a crane, and belongs to the technical field of energy feedback control. The control method comprises monitoring in real time voltages on a DC bus and voltages of a rapid charge energy storage apparatus, through monitoring the voltages on the DC bus and the voltages of the rapid charge energy storage apparatus in real time, when the voltages on the DC bus are greater than or equal to the voltages of the rapid charge energy storage apparatus, connecting the rapid charge energy storage apparatus with the DC bus, charging the rapid charge energy storage apparatus, when the voltages on the DC bus are smaller than the voltages of the rapid charge energy storage apparatus, connecting the rapid charge energy storage apparatus with the DC bus, discharging the rapid charge energy storage apparatus, at the moment, connecting one slow discharge energy storage apparatus with the rapid charge energy storage apparatus so as to charge the slow discharge energy storage apparatus, and at the same time, another slow discharge energy storage apparatus supplying power to electrical equipment, such that the problem of shortening the life of the slow discharge energy storage apparatus when the slow discharge energy storage apparatus discharges while charging is avoided.

Description

technical field [0001] The invention relates to the technical field of energy feedback control, in particular to an energy control method and a control device for a crane. Background technique [0002] In today's increasingly severe energy situation, energy conservation and emission reduction has become a topic of common concern to both society and enterprises. Because it can not only reduce energy loss in production and life, reduce the burden on the environment, but also increase the economic benefits of enterprises. As a mechanical device that is widely used in production and life and consumes a lot of energy, it is imperative to save energy and reduce emissions. [0003] During the braking process of the crane, the motor converts mechanical energy into electrical energy. At present, there is a method of connecting a fast-charging energy storage device (such as a super capacitor) on the DC bus, storing this part of electric energy through the fast-charging energy storag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/32
CPCH02J3/32
Inventor 黄淮山马志刚肖开明吴健
Owner WUHAN MARINE MACHINERY PLANT
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