Preventing AC drive failures due to commutation notches on a drilling rig

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

doi:10.1109/pcicon.2009.5297179

Cited by 5 publications

(2 citation statements)

References 3 publications

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“…Thyristor bridges are paradoxically known to generate notch in the voltage. As explained in [8], this voltage notch results from the unperfect diode pair commutations: a short circuit occurs during the commutation and then a brief drop in voltage appears. This notch disturbs the input voltage of the bridge, which conduces to a bad voltage deviation factor.…”

Section: B Mean To Reduce the Voltage Deviation Factormentioning

confidence: 91%

Voltage deviation factor analysis and meaning for warship electric power system

Scuiller¹,

Keruel²,

Richard³

2011

2011 IEEE Electric Ship Technologies Symposium

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In the NATO warship, the shipboard electric power system is usually designed to meet STANAG 1008 standard requirements. As in all the standards, STANAG 1008 specifies individual and global harmonic distortion limitations for the grid voltage. But STANAG 1008 standard also imposes the control of an unusual criterion called voltage deviation factor. This paper discusses on the origin, the meaning and the practical interest of this deviation factor. Its definition is mathematically formalized and a procedure is described in order to estimate deviation factor for any time signal. Causes and consequences of high deviation factor are examined regarding high power converter side.

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Section: B Mean To Reduce the Voltage Deviation Factormentioning

confidence: 91%

Voltage deviation factor analysis and meaning for warship electric power system

Scuiller¹,

Keruel²,

Richard³

2011

2011 IEEE Electric Ship Technologies Symposium

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“…However, still there are numerous customer sites, where many DC drives are in operation and connected with diode rectifier-based AC drives to the same distribution network. Recently, a number of AC drive trips and components failures have been reported on such customer sites and it has been confirmed that they are due to input voltage notches generated by DC drives [120], [121]. Operation of ASD under commutation notches can result in higher frequency harmonic contents and voltage surges, which can lead to control and instability problems in ASD.…”

Section: Input Commutation Notchesmentioning

confidence: 99%

Power Quality Issues of Distorted and Weak Distribution Networks in Mining Industry: A Review

et al. 2019

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Mining is an important industry in many countries including Australia and plays a vital role in their economy. The industry heavily depends on electricity as it employs different types of electrical loads. Consequently, a stable and reliable supply of electricity is vital for running the production smoothly. In this review paper, electrical characteristics of mining power systems are described and common power quality and energy efficiency concerns in these systems are stated and classified. Different types of common power electronics topologies used in the industry are also studied and main requirements for reliable and robust operation of the system are categorized. A comprehensive case study to elaborate power quality challenges in mining distribution network is performed.INDEX TERMS Distorted grid, distribution network, energy efficiency, mining industry, power quality, power system robustness.

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A novel harmonic reduction technique for controlled converter by third harmonic current injection

Eltamaly

2012

2012 IEEE International Conference on Control System, Computing and Engineering

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Preventing AC drive failures due to commutation notches on a drilling rig

Cited by 5 publications

References 3 publications

Voltage deviation factor analysis and meaning for warship electric power system

Voltage deviation factor analysis and meaning for warship electric power system

Power Quality Issues of Distorted and Weak Distribution Networks in Mining Industry: A Review

A novel harmonic reduction technique for controlled converter by third harmonic current injection

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