Preventing AC Drive Failures Due to Commutation Notches on a Drilling Rig

Hoevenaars, A. H.; Evans, I.C.; Desai, B. T.

doi:10.1109/tia.2013.2253078

Cited by 13 publications

(5 citation statements)

References 4 publications

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“…The line reactor (L) at the thyristor bridge input is used to mitigate the slop of current (see Figure 2) during the thyristor's commutation, when the current is flowing from one phase to the next phase [64,65]. It protects the thyristor bridge electronics as well as the elements at the DC side against a short-circuit current [66]. Without L at the thyristor bridge input, the PCC current presents very steep slope (Figure 2) but with L, the current slope is less steep and the PCC voltage commutation notches are less deep (Figure 2).…”

Section: Simulated Power System Descriptionmentioning

confidence: 99%

Investigation on the Work Efficiency of the LC Passive Harmonic Filter Chosen Topologies

Mboving

2021

Electronics

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The use of passive harmonic filters (PHFs) in an electrical system is in most cases for the fundamental harmonic reactive power compensation and harmonics mitigation. In comparison to other filters applied to improve the power quality, such as the shunt active power filter or hybrid active power filter, their main advantages are the low investment costs and easy applicability in low-, medium-, and high-voltage electrical systems. However, their installation demands a deep analysis of the electrical system as well as a thorough knowledge of the topology to be installed. Their work efficiency is influenced by the parameters of the electrical system (grid, load, and filter itself) which must be well-known before installation. The aim of this paper is to present an investigation on the work efficiency of the LC passive harmonic filter chosen topologies. The PHFs are investigated in the frequency domain through their impedance versus frequency characteristics as well as in the time domain through an electrical system. A comparative study between filters is also considered. The investigations on the case examples of PHFs are based on simulations and some laboratory studies are also presented.

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Section: Simulated Power System Descriptionmentioning

confidence: 99%

Investigation on the Work Efficiency of the LC Passive Harmonic Filter Chosen Topologies

Mboving

2021

Electronics

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“…Apart from such obvious design criteria for OMS as displacement, speed and power requirements dictated by the considered application, there are also other challenges exclusively associated with the electrical actuation systems of OMS, according to Pawlus (2016). One of them is to apply harmonics mitigation measures in electric motor drives to prevent voltage notches and overvoltage ringing that can damage the installation and cause threat to personnel offshore (Hoevenaars et al, 2013). In addition, vibration and fatigue damage pose a serious danger to rotating components (e.g.…”

Section: Design Criteria and Challengesmentioning

confidence: 99%

Feasibility Study of Electromechanical Cylinder Drivetrain for Offshore Mechatronic Systems

Hagen¹,

Pawlus²,

Ebbesen³

et al. 2017

MIC

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Currently, there is an increasing focus on the environmental impact and energy consumption of the oil and gas industry. In offshore drilling equipment, electric motors tend to replace traditionally used hydraulic motors, especially in rotational motion control applications. However, force densities available from linear hydraulic actuators are still typically higher than those of electric actuators. Therefore, usually the remaining source of hydraulic power is thereby the hydraulic cylinder. This paper presents a feasibility study on the implementation of an electromechanical cylinder drivetrain on an offshore vertical pipe handling machine. The scope of this paper is to investigate the feasibility of a commercial off-the-shelf drivetrain. With a focus on the motion performance, numerical modeling and simulation are used when sizing and selecting the components of the considered electromechanical cylinder drivetrain. The simulation results are analyzed and discussed together with a literature study regarding advantages and disadvantages of the proposed solution considering the design criteria of offshore drilling equipment. It is concluded that the selected drivetrain can only satisfy the static motion requirements since the required transmitted power is higher than the recommended permissible power of the transmission screw. Consequently, based on the recommendation of the manufacturer, avoidance of overheating cannot be guaranteed for the drivetrain combinations considered for the case study presented in this paper. Hence, to avoid overheating, the average speed of the motion cycle must be decreased. Alternatively, external cooling or temperature monitoring and control system that prevents overheating could be implemented.

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“…One of the challenges that arises with an increased use of electric motor drives in offshore applications, is susceptibility to poor power quality in the form of voltage notches and overvoltage ringing (Hoevenaars et al, 2013). Such distortion might lead to failures in other equipment connected to the power distribution bus.…”

Section: Challenges In Design and Drilling Operationsmentioning

confidence: 99%

Hydraulic vs. Electric: A Review of Actuation Systems in Offshore Drilling Equipment

Pawlus¹,

Choux²,

Hansen³

2016

MIC

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This article presents a survey on actuation systems encountered in offshore drilling applications. Specifically, it focuses on giving a comparison of hydraulic and electric drivetrains along with detailed explanations of their advantages and drawbacks. A significant number of industrial case studies is examined in addition to the collection of academic publications, in order to accurately describe the current market situation. Some key directions of research and development required to satisfy increasing demands on powertrains operating offshore are identified. The impact of the literature and application surveys is further strengthened by benchmarking two designs of a full-scale pipe handling machine. Apart from other benefits, the electrically actuated machine reduces the total power consumption by 70 % compared to its hydraulically driven counterpart. It is concluded that electric actuation systems, among other advantages, in general offer higher efficiency and flexibility, however, in some specific applications (such as energy accumulation or translational motion control) hydraulic powertrains are favorable.

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Preventing AC Drive Failures Due to Commutation Notches on a Drilling Rig

Cited by 13 publications

References 4 publications

Investigation on the Work Efficiency of the LC Passive Harmonic Filter Chosen Topologies

Investigation on the Work Efficiency of the LC Passive Harmonic Filter Chosen Topologies

Feasibility Study of Electromechanical Cylinder Drivetrain for Offshore Mechatronic Systems

Hydraulic vs. Electric: A Review of Actuation Systems in Offshore Drilling Equipment

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