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Active damping of oscillations in the control process

A damping and controller technology, applied in pump control, engine control, components of pumping devices for elastic fluids, etc., can solve problems such as poorly tuned controllers, shortened component life, and oscillations

Active Publication Date: 2019-09-13
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Unaccounted for interactions between different control loops (e.g. two process controllers of two different machines oscillating with each other) can lead to oscillations
[0012] Poorly tuned controllers in compression systems (e.g., process controllers), or outdated tuning (e.g., process conditions vary significantly) can cause oscillations
[0013] Such oscillations are undesirable as they shorten the life of the components and compromise the stability of the control system and the quality of the control performance

Method used

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  • Active damping of oscillations in the control process
  • Active damping of oscillations in the control process
  • Active damping of oscillations in the control process

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Embodiment Construction

[0035] The inventive concepts will now be described more fully hereinafter with reference to the accompanying drawings, in which certain embodiments of the inventive concepts are shown. However, inventive concepts may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided by way of example so that this disclosure will be thorough and complete, and fully convey the scope of the inventive concept to those of ordinary skill in the art. The same reference numerals are used throughout the specification to refer to the same elements. Any steps or features illustrated by dashed lines should be considered optional.

[0036] Embodiments disclosed herein relate to manipulating an electric (variable speed) drive to actively dampen oscillations caused by the previously enumerated factors. This manipulation minimizes performance fluctuations and improves the stability of the control system.

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Abstract

Mechanisms are provided for actively damping oscillations in the control process. The method is executed by the controller. The method includes obtaining process data from a compression process. The method includes performing an oscillation frequency estimation of any detected oscillations in the process data. The method includes generating a damping signal based on the oscillation frequency estimate. The method includes providing a damping signal to an electric drive of the compression process.

Description

technical field [0001] Embodiments provided herein relate to controlling oscillations in a process, and in particular to methods for actively damping oscillations in a controlling process. Background technique [0002] Compressors, such as centrifugal compressors, are widely used to compress and distribute gas streams in extraction applications, process plants, and pipeline applications. exist figure 1 A common arrangement of a known compression system 100 for such an application is shown in , where typical components are visible. [0003] Compression system 100 includes station inlet header (inlet header) 101 and station outlet header (outlet header) 102, wherein station inlet header 101 is used to receive medium, and station outlet header 102 is used to provide past medium. Between the station inlet header 101 and the station outlet header 102 two centrifugal compressors 103 , 104 are arranged. Centrifugal compressor 104 is controlled by variable frequency drive 105 an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/66
CPCF04D29/667F05D2270/333F05D2270/10F05D2270/334F04D27/0261F04D29/661F04D29/665Y02B30/70F04D17/10F04D25/06F04D27/001F04D29/668
Inventor A·科蒂诺维斯B·伯哈根M·梅尔坎戈伊兹
Owner ABB (SCHWEIZ) AG