Self-Excitation and Harmonics in Wind Power Generation

Muljadi, Eduard; Butterfield, C.P.; Romanowitz, H.; Yinger, Robert J.

doi:10.1115/1.2047590

Cited by 9 publications

(5 citation statements)

References 2 publications

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“…Using (15), the S/N ratio is computed for each experiment out of the nine experiments. One can figure out that the higher the S/N ratio the smaller the cost function's value will be.…”

Section: Taguchi Methods Based Analysis 41 Taguchi Methodsmentioning

confidence: 99%

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A Taguchi method-based optimization algorithm for the analysis of the wind driven-self-excited induction generator

Boukenoui,

Bradai,

Kheldoun

2024

IJPEDS

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This paper investigates the use of a new global optimization algorithm that is based on Taguchi method to determine the performance parameters of self-excited induction generator being driven by variable speed wind. This analysis is based on solving equations obtained from the per-phase equivalent circuit of the induction generator. The equations have two unknowns namely the frequency and the magnetizing reactance. Both unknown are strongly dependent on the wind turbine speed, the capacity of the excitation, the load being connected at the terminals of the stator and eventually the per-phase equivalent circuit parameters. The resulting equations are nonlinear and subsequently to solve them one can employ either gradient-based algorithms or heuristic algorithms. This paper uses a new heuristic algorithm based on the Taguchi method which, in addition to its global research capability, offers superior characteristics in terms of accuracy and ease of implementation. A comparison with recently published optimization methods is carried out to show its performances in terms of accuracy and ease of implementation. The MATLAB software will be used to perform this analysis on a machine of 0.75 kW while some will be validated experimentally to confirm the aforementioned benefits.

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“…Using (15), the S/N ratio is computed for each experiment out of the nine experiments. One can figure out that the higher the S/N ratio the smaller the cost function's value will be.…”

Section: Taguchi Methods Based Analysis 41 Taguchi Methodsmentioning

confidence: 99%

“…In order to characterize the non-linear effect, three levels are needed for each factor. The cost function is the absolute value of the admittance as (9) while S/N ratio is calculated using (15). -Step (b) which is computation of factor levels.…”

Section: Minimization Of Admittance Using Taguchi Methodsmentioning

confidence: 99%

A Taguchi method-based optimization algorithm for the analysis of the wind driven-self-excited induction generator

Boukenoui,

Bradai,

Kheldoun

2024

IJPEDS

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“…Currently, the application of induction generators in power plants is increasingly rivaling the use of synchronous generators, especially in small scale power plants that are driven by renewable energy sources, such as micro hydro power plants, wind power, biomass power, etc. [1][2][3][4]. This is mainly due to the induction generator (squirrel-cage rotor) has a number of advantages over synchronous generators, including: strong and simple rotor construction, minimal maintenance, simple operation, has the ability to self-protection.…”

Section: Introductionmentioning

confidence: 99%

Effect analysis of residual magnetism availability level on the success of voltage generation processes in self-excited induction generators

Nazir

Syafii

Pawawoi

et al. 2020

IJPEDS

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The voltage generation process is a very crucial initial stage for the successful operation of the self-excited induction generator (SEIG). The availability of residual magnetism and the adequacy of excitation capacitor value are factors that determine the success of the voltage generation process on the SEIG. This paper analyzes the effect of the availability of residual magnetism on the rotor's magnetic core. With a simple approach, the terminal voltage on the SEIG can be solved through the intersection between the magnetization curve (Xm) and the excitation curve (Xce). The shape and equation of the magnetization curve will be affected by the availability of residual magnetism. The change in residual magnetism availability will cause a change in the intersection point between the magnetization curve (Xm) and the excitation curve (Xce), which will determine the value of voltage generated by the generator. In this study, Newton Rhapson's method with numerical iteration approach has been used to analyze the effect of changes in the availability of residual magnetism on the success of voltage generation on the SEIG. The analysis results have been shown that the availability of residual magnetism with residual voltage values below 1.04 Volt will cause the failure of the SEIG to generate the terminal voltage at its nominal value. Meanwhile, the availability of residual magnetism in SEIG with residual voltage values above 1.04 Volt, will succeed in generating terminal voltage at its nominal value. For SEIG used as the object of this study, the value of Eres = 1.04 Volt is a critical value of the availability of residual magnetism.

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“…This part of the IEC 61400-21:2001 (1) Standard provides recommendations for preparing the measurements and assessment of power quality characteristic of grid-connected wind turbines and was used by many for harmonic field measurements (2)(3) , harmonic impact studies (4) and filter designs (5) , including capacitor bank switching (6) to adjust reactive compensation. The focus of the measurement has been for individual wind turbines or at the Point of Common Coupling (PCC) of a wind farm to the grid.…”

Section: Introductionmentioning

confidence: 99%

From transmission to distribution networks-harmonic impacts on modern grid

Dang

Al-Mutawaly

Lepoutre

2015

2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE)

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This paper investigates the effect of harmonics due to renewable generation, energy-saving home appliances and electric vehicle chargers. Harmonics were found to be contained at the transmission level due to the presence of shunt capacitors. These shunt capacitors behave like single-tuned or high-pass harmonic filters, however there will be an increased risk of harmonic resonance making the transmission line susceptible to tripping wind turbines on transient overvoltage.Harmonics generated by solar, energy-saving home appliances and electric vehicle chargers pose a potential threat to the distribution network systems and if allowed to continue unabated could cause fuse failures and premature failure of pole-mount transformers. In addition, neutral current can be excessive due to current harmonic distortion even with loads balanced on three phases which will cause overheating if the neutral is undersized.The paper also identifies some areas where further work is required to understand harmonics and their impacts on power system performances.

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Self-Excitation and Harmonics in Wind Power Generation

Cited by 9 publications

References 2 publications

A Taguchi method-based optimization algorithm for the analysis of the wind driven-self-excited induction generator

A Taguchi method-based optimization algorithm for the analysis of the wind driven-self-excited induction generator

Effect analysis of residual magnetism availability level on the success of voltage generation processes in self-excited induction generators

From transmission to distribution networks-harmonic impacts on modern grid

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