Fault-tolerant Control of wound rotor synchronous generator in wind turbines

Lešić, Vinko; Vašak, Mario; Stojcic, G.; Wolbank, T.M.

doi:10.1109/icelmach.2014.6960421

Cited by 2 publications

(3 citation statements)

References 12 publications

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“…and speed is seen as an external parameter imposed by the prime mover. Equations (17), (18) and (19) lead to the state space form:…”

Section: A Optimal Control Of Synchronous Machine and Dc-dc Convertermentioning

confidence: 99%

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An Optimally Controlled Variable Output Wound Rotor Synchronous Machine

Owuor¹,

Munda²,

Jimoh³

2016

IJOEE

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This paper presents analytical and simulation results for a wound rotor synchronous machine in variable speed, variable output applications. To enable efficient control, an optimized LQR strategy is employed. For secure power supply to the loads, the machine only operates in the generating mode. The concept presented provides great flexibility in operation of the synchronous machine and is suitable for small hydropower and wind generation applications. The method enhances efficiency in the control of synchronous generators. 

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“…and speed is seen as an external parameter imposed by the prime mover. Equations (17), (18) and (19) lead to the state space form:…”

Section: A Optimal Control Of Synchronous Machine and Dc-dc Convertermentioning

confidence: 99%

“…(37) and R is an I 3 identity matrix. iii are generated to maximize the efficiency in the whole torque-speed plane [18]. These currents can either be generated; off-line and stored in look-up tables, or on-the-fly as by demand, for the same control structure of Fig.…”

Section: B Optimal Control Strategy With Integral Actionmentioning

confidence: 99%

An Optimally Controlled Variable Output Wound Rotor Synchronous Machine

Owuor¹,

Munda²,

Jimoh³

2016

IJOEE

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show abstract

“…This means that the thermal effectiveness of the mitigation technique cannot be determined accurately. In [10], the authors reduce the fault propagation, by modulating the magnetic flux instead of flux‐weakening. The derivative of the flux is limited to a given value, which is obtained by a non‐specified machine diagnostic.…”

Section: Introductionmentioning

confidence: 99%

Fault tolerant control of a three‐phase PMSM by limiting the heat of an inter‐turn fault

Foitzik

Doppelbauer

2021

IET Electric Power Appl

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Inter-turn faults are most commonly the initial stator winding fault in power trains with Voltage Source Inverters. Without counteractions, these faults can propagate and cause catastrophic failures in safety critical applications like all-electric aircraft. The propagation of an inter-turn fault can be reduced, by limiting the local temperature at the fault. In this article, a fault tolerant control scheme is designed and validated, which reduces the heat of an inter-turn fault by a controlled adaption of the operating point. The control strategy utilizes the hyperbolas of constant torque and the controller design is based on a linear time-invariant system description. A machine learning regression is used for the online heat estimation and a 3D lumped-parameter model to evaluate the thermal effectiveness. To test the control scheme, an inter-turn fault is actively switched, which generates the local heat equal to 13% of the overall stator copper losses. The control scheme adopts the operating point within 30 electric periods, which reduces the generated heat of the interturn fault by 70%. This causes a temperature reduction at the fault locally from 367°C to 175°C, which extends the approximated insulation life from 30 s to 5000 h.

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Fault-tolerant Control of wound rotor synchronous generator in wind turbines

Cited by 2 publications

References 12 publications

An Optimally Controlled Variable Output Wound Rotor Synchronous Machine

An Optimally Controlled Variable Output Wound Rotor Synchronous Machine

Fault tolerant control of a three‐phase PMSM by limiting the heat of an inter‐turn fault

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