Input-to-State Stability Condition for Passive Fault-Tolerant Control of Wave and Wind Energy Converters

Schulte, Horst; Gauterin, Eckhard

doi:10.1016/j.ifacol.2015.09.537

Cited by 4 publications

(3 citation statements)

References 9 publications

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“…FTC can be classified as active and passive FTC based on the control strategy [58,96]. It is possible to construct a fault estimation device in the active FTC to estimate the unknown failures in the system, and then, based on the estimated failures, a corresponding control scheme can be designed in accordance with the estimate of the failures.…”

Section: Fault-tolerant Control For Wecsmentioning

confidence: 99%

Fault Diagnosis and Condition Monitoring in Wave Energy Converters: A Review

Mortazavizadeh,

Yazdanpanah,

Gaona

et al. 2023

Energies

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The technology used in wave energy conversion systems is still in the early stages of research and development. There are a number of challenges associated with becoming a commercially viable source of renewable energy due to the high operating and maintenance (O&M) costs. A potential solution for increasing the availability of wave energy converters (WECs) and reducing operating and maintenance costs might involve the implementation of condition monitoring and fault-tolerant control systems, because in some reported WEC systems, 57% of total operational expenses go to maintenance activities. The use of condition monitoring techniques in wind energy systems has, for instance, shown the ability to detect failures months in advance, resulting in savings of 15–20% during the operational phase. This paper reviews the methods proposed (and some used) by researchers to monitor WEC’s condition and diagnose faults. Fault-tolerant control methods developed to improve the reliability of WECs and hence their commercial viability are also reviewed and discussed. In addition, a future research plan is provided here.

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Section: Fault-tolerant Control For Wecsmentioning

confidence: 99%

Fault Diagnosis and Condition Monitoring in Wave Energy Converters: A Review

Mortazavizadeh,

Yazdanpanah,

Gaona

et al. 2023

Energies

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“…In the literature, WPGSs are modelled into the set of non-linear differential equations that acquires the information about the productivity of energy. In addition, numerous controllers have been proposed and proved the stable performance of the wind turbines (see for example [4][5][6][7][8]). In general, improvements are still necessary in order to configure the stable performance and optimise the leakages.…”

Section: Introductionmentioning

confidence: 99%

Stabilisation of event‐triggered‐based neural network control system and its application to wind power generation systems

Shanmugam

Mani

Joo

2020

IET Control Theory & Applications

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This study addresses the event-triggered (ET)-based stabilisation problem of neural-network-based control system (NNBCS) and illustrates the direct application to wind power generation system. In this regard, the novel ET-based controller algorithm is designed for NNBCS instead of sampled data controller (sampling will be initiated at a fixed rate regardless whether it is required or not) which reduces the computation complexity by avoiding the unnecessary details over the transmission. The novel stability and stabilisation conditions are expressed in terms of linear matrix inequalities that are derived through constructing the time-dependent Lyapunov functional candidate. For deepening the knowledge in the outcomes of the proposed conditions, the study numerically evaluates the dynamic models such as variable-speed wind turbine drive system, permanent magnet synchronous motors model and traditional inverted pendulum model and validates the effectiveness of the proposed controller scheme. Finally, a comparison result shows the superiority of the derived conditions. NomenclatureB s shaft damping J T and J g turbine and generator inertia K s shaft compliance Q shaft torque Q A input wind torque Q E generator torque ℛ blade length V wind velocity, ω t turbine angular velocity ω g generator angular velocity ρ air density

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“…Fault‐tolerant control (FTC) systems are generally split into active FTC (AFTC) and passive FTC structures [4]. AFTC systems [5] contain three layers: the first layer is related to the inner control loop; the second layer corresponds to the fault detection, isolation, and accommodation modules; and the last layer corresponds to the supervisor system.…”

Section: Introductionmentioning

confidence: 99%

Robust control of a floating OWC WEC under open‐switch fault condition in one or in both VSCs

Ramirez

Blanco

Zarei

et al. 2020

IET Renewable Power Generation

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The operation and maintenance activity of offshore wind turbines (WTs) increases the cost of the generated energy. Although significant efforts have been made to improve the reliability of the mechanical subassemblies, electrical and electronic subassemblies fail more frequently, causing undesirable downtimes and loss of revenues. Since offshore WTs and wave energy converters (WECs) share the electrical and electronic subassemblies, the reliability of WECs is expected to be affected by the same causes. This study presents a robust model predictive control for a WEC consisting of an oscillating water column (OWC) installed in a point absorber. The control system is capable of dealing with open switch faults in one or two insulatedgate bipolar transistors of the same arm in any of the voltage source converters (VSCs), or even in both VSCs at the same time. The system allows the OWC WEC to generate energy, although under certain restrictions, thereby reducing the urgency of repair and loss of revenues. The performance of the proposed approach is tested for several cases of open switch faults, experimentally in the laboratory using an OWC WEC emulator.

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Input-to-State Stability Condition for Passive Fault-Tolerant Control of Wave and Wind Energy Converters

Cited by 4 publications

References 9 publications

Fault Diagnosis and Condition Monitoring in Wave Energy Converters: A Review

Fault Diagnosis and Condition Monitoring in Wave Energy Converters: A Review

Stabilisation of event‐triggered‐based neural network control system and its application to wind power generation systems

Robust control of a floating OWC WEC under open‐switch fault condition in one or in both VSCs

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