Meeting Harmonic Limits on Marine Vessels

Evans, I.C.; Hoevenaars, A. H.; Eng, P.

doi:10.1109/ests.2007.372073

Cited by 21 publications

(14 citation statements)

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“…Unfortunately no arguments can be found to explain the purpose of this deviation factor constraint. Whereas references dedicated to harmonic effects are numerous (as [3] for example), very few of them mention the deviation factor. In [4] that examines the links between individual and global harmonic limitations, the voltage deviation factor is introduced as a tool to indicate the peak value of the voltage wave.…”

Section: Origin and Purpose Of The Voltage Deviation Factormentioning

confidence: 98%

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: Origin and Purpose Of The Voltage Deviation Factormentioning

confidence: 98%

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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“…Thus, a set of shunt-connected passive filters cannot be effectively adapted to the wide range of variations in propulsion loads on-board an electrical ship. Another alternative for passive harmonic mitigation is to apply series connected wide spectrum filters [3]. However, such filters must be installed in each of the propulsion loads, and will not mitigate harmonics generated by smaller VFD loads in the system.…”

Section: Introductionmentioning

confidence: 99%

System-Wide Harmonic Mitigation in a Diesel-Electric Ship by Model Predictive Control

Skjong

Suul

Rygg

et al. 2016

IEEE Trans. Ind. Electron.

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Abstract-This paper proposes a system-oriented approach for mitigating harmonic distortions by utilizing a single Active Power Filter (APF) in an electrical grid with multiple buses. Common practice for control of APFs is to locally compensate the load current harmonics or to mitigate voltage harmonics at a single bus. However, the operation of an APF in a multi-bus system will influence the voltages at neighboring buses. It is therefore possible to optimize the APF operation from a system perspective instead of considering only conventional local filtering strategies. For such purposes, Model Predictive Control (MPC) is proposed in this paper as a framework for generating APF current references that will minimize the harmonic distortions of the overall system within a given APF rating. A diesel-electric ship, with two buses supplying separate harmonic loads, with an APF located at one of the buses, is used as study case. The operation with on-line MPCbased optimization of the APF current references is compared to two benchmark methods based on conventional approaches for APF control. The results demonstrate that the MPC generates current references that better utilize the APF current capability for system-wide harmonic mitigation.

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“…System-level wide spectrum harmonics mitigation approaches have not been extensively reported in the literature [5]. Some authors have proposed wide spectrum mitigation solutions based on passive filters [6,7]. Nonetheless, these solutions will generally require a retuning when the harmonic pollution changes substantially from the design conditions, since they are passive and are not able to optimally follow the changing spectrum conditions [4].…”

Section: Introductionmentioning

confidence: 99%

Optimized current reference generation for system-level harmonic mitigation in a diesel-electric ship using non-linear model predictive control

Skjong

Molinas

Johansen

2015

2015 IEEE International Conference on Industrial Technology (ICIT)

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Abstract-Non-linear optimal control using collocation and multiple shooting is investigated in this paper to generate the current reference signal for the lower level control of an active filter in a marine vessel with diesel-electric propulsion. The optimization objective is aimed at using the active filter for system-level minimization of Total Harmonics Distortion with the minimum rating of the active filter. The investigation of the different algorithms is oriented to the search of a solution that can offer a good compromise between accuracy and real-time implementation abilities. Results indicate that linear problem formulations are more suitable for real time implementation as they require less computational costs with minimal loss of flexibility. Non-linear problem formulations provide higher flexibility at the cost of higher computational efforts.

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Meeting Harmonic Limits on Marine Vessels

Cited by 21 publications

References 1 publication

Voltage deviation factor analysis and meaning for warship electric power system

Voltage deviation factor analysis and meaning for warship electric power system

System-Wide Harmonic Mitigation in a Diesel-Electric Ship by Model Predictive Control

Optimized current reference generation for system-level harmonic mitigation in a diesel-electric ship using non-linear model predictive control

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