Novel maximum-power-extraction algorithm for PMSG wind generation system

Wai, Rong‐Jong; Lin, Chien-Yu; Chang, Yung‐Ruei

doi:10.1049/iet-epa:20050514

Cited by 110 publications

(52 citation statements)

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“…The mathematical model used in this contribution to describe the relationship between the wind speed and the mechanical power extracted from the wind is [24,25].…”

Section: Wind Turbine Aerodynamic Modelmentioning

confidence: 99%

Harmonic Modelling of the Wind Turbine Induction Generator for Dynamic Analysis of Power Quality

et al. 2018

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Abstract:Given the increasing integration of wind-based generation systems into the electric grid, efforts have been made to deal with the problem of power quality associated with the intermittent nature of these systems. This paper presents a new modelling approach oriented towards harmonic distortion analysis of the induction machine for wind power applications. The model is developed using companion harmonic circuit modelling, which is a natural approach for analysis of the adverse effects of harmonic distortion in electric power systems, and represents an easier solution method than the well known dynamic harmonic domain, since it solves algebraic equations instead of state-space differential equations. The structure of the companion circuits simplifies both the formulation and solution for power systems with wind-based generation systems. This approach is especially useful for analysis of the harmonic interaction in transient and steady states between the wind power generator and the power system, whose interconnection is made through electronic converters. The proposed model allows us to compute the dynamics of the wind turbine, which are influenced by disturbances such as changes in the wind velocity, voltage fluctuations, electric waveform distortion, and mechanical vibrations, among other factors. Moreover, the cross-coupling between harmonic components at different frequencies is considered. The proposed model represents an integral framework of the electrical and mechanical subsystems of a wind turbine, allowing for analysis of the interactions between them, and understanding power quality degradation behaviour as well as causes and consequences, while also giving useful information on the field of simulation and control. To test the performance of the proposed model, a test power system is used to obtain the behaviour of a wind turbine induction generator in response to typical power quality disturbances, i.e., harmonic distortion, and voltage sags and swells. Then, the dynamics of the variables considering their harmonic interactions are analysed.

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“…The mathematical model used in this contribution to describe the relationship between the wind speed and the mechanical power extracted from the wind is [24,25].…”

Section: Wind Turbine Aerodynamic Modelmentioning

confidence: 99%

Harmonic Modelling of the Wind Turbine Induction Generator for Dynamic Analysis of Power Quality

et al. 2018

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“…Due to the frequency and the output voltage of a PMSG relying on the wind speed, an AC/DC converter, generator side converter and a DC/AC converter (inverter), network side converter are all needed to connect the generator to the grid [31].…”

Section: Model Of Controller For Wind Turbine-permanent Magnet Synchrmentioning

confidence: 99%

Frequency Regulation Strategies in Grid Integrated Offshore Wind Turbines via VSC-HVDC Technology: A Review

2017

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Abstract:The inclusion of wind energy in a power system network is currently seeing a significant increase. However, this inclusion has resulted in degradation of the inertia response, which in turn seriously affects the stability of the power system's frequency. This problem can be solved by using an active power reserve to stabilize the frequency within an allowable limit in the event of a sudden load increment or the loss of generators. Active power reserves can be utilized via three approaches: (1) de-loading method (pitching or over-speeding) by a variable speed wind turbine (VSWT); (2) stored energy in the capacitors of voltage source converter-high voltage direct current (VSC-HVDC) transmission; and (3) coordination of frequency regulation between the offshore wind farms and the VSC-HVDC transmission. This paper reviews the solutions that can be used to overcome problems related to the frequency stability of grid-integrated offshore wind turbines. It also details the permanent magnet synchronous generator (PMSG) with full-scale back to back (B2B) converters, its corresponding control strategies, and a typical VSC-HVDC system with an associated control system. The control methods, both on the levels of a wind turbine and the VSC-HVDC system that participate in a system's primary frequency control and emulation inertia, are discussed.

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“…Those methods requires storing data of peak points obtained and training stage. The maximum power error driven mechanism (MPED) has been recently use [35]; it provides a preliminary optimized operating point from which the memory begins storage process. The direct current demand control (DCDC) makes use of optimized functions to calculate the initial state of the variables of HCS algorithm, normally MPED and DCDC are implemented together in a structure which is known as advanced hill-climb search [6].…”

Section: Hill-climb Search (Hcs) Controlmentioning

confidence: 99%