Modeling Strategy for Back-to-Back Three-Level Converters Applied to High-Power Wind Turbines

Portillo, R.; Prats, M.M.; Leon, Jose I.; Sánchez, Juan Antonio Pastor; Carrasco, J.M.; Galván, E.; Franquelo, Leopoldo G.

doi:10.1109/tie.2006.882025

Cited by 202 publications

(103 citation statements)

References 23 publications

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“…The equations that describe the model of the system [44] together with the voltage balancing methods proposed in Section 4 have been implemented to study the behavior of the system and evaluate its performance. In addition, the instantaneous power controller and the total dc-link voltage controller have been designed and implemented as well.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…In addition, the gating signals that regulate the positions of the switches of both converters are defined by δ * a,r , δ * b,r and δ * c,r in the rectifier, and by δ * a,i , δ * b,i and δ * c,i in the inverter. Among the large variety of converter models such as, e.g., time-varying and time-invariant averaged models, detailed switching models and small signal models [43], the continuous model of the back-to-back converter presented in [44] is adopted in this paper. The model is based on a direct average of the characteristics and waveforms associated with each of the components of the converters, providing a model valid all over the range of values of the control inputs.…”

Section: Model Of the Back-to-back Converter And Control Objectivesmentioning

confidence: 99%

“…The model is based on a direct average of the characteristics and waveforms associated with each of the components of the converters, providing a model valid all over the range of values of the control inputs. Thereby, the model obtained describes, in αβγ orthogonal coordinates, using the Clarke-Concordia Transform, the dynamics of the phase currents and of the total dc-link voltage [44], including the dc-link capacitor voltage difference dynamics, as well. Particularly, these last dynamics are given by…”

Section: Model Of the Back-to-back Converter And Control Objectivesmentioning

confidence: 99%

See 2 more Smart Citations

Asymptotic rejection of sinusoidal disturbances based voltage balance control in back-to-back power converters

Umbría

Gordillo

Salas

et al. 2013

Int. J. Robust. Nonlinear Control

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SUMMARYThis paper addresses the imbalance problem of the dc-link capacitor voltages in the three-level diodeclamped back-to-back power converter. In order to cope with it, a mathematical analysis of the capacitor voltage difference dynamics, based on a continuous model of the converter, is first carried out. It leads to an approximated model which contains explicitly several sinusoidal functions of time. In view of this result, the voltage imbalance phenomenon can be addressed as an output regulation problem, considering the sinusoidal functions as exogenous disturbances. Thus, a novel approach to deal with the mentioned problem in the backto-back converter is presented. Then, the particular features of the disturbances are used to design several controllers. They all follow an asymptotic disturbance rejection approach. In this way, the estimations of the disturbances are used to apply a control law that cancels them while regulating the capacitor voltage balance as well. Finally, the performance of the proposed control laws is evaluated, presenting the simulation results obtained when the different controllers are implemented.

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Section: Simulation Resultsmentioning

confidence: 99%

Section: Model Of the Back-to-back Converter And Control Objectivesmentioning

confidence: 99%

Section: Model Of the Back-to-back Converter And Control Objectivesmentioning

confidence: 99%

See 1 more Smart Citation

Asymptotic rejection of sinusoidal disturbances based voltage balance control in back-to-back power converters

Umbría

Gordillo

Salas

et al. 2013

Int. J. Robust. Nonlinear Control

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show abstract

“…it is widely used in grid-connected power generation, motor drive, control of battery charge and discharge and other fields [1][2][3][4]. Meanwhile, the three-phase PWM converter with pulse width modulation (PWM) generates high frequency switching harmonics, so it requires high-frequency filter in its AC side.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Parameters for LCL Filter of Least Square Method Based Three-phase PWM Converter

Zheng¹,

Liang²,

Li³

et al. 2015

Journal of Electrical Engineering and Technology

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-LCL filters are widely used in three-phase PWM converter for its advantages of small volume, low cost and inhibition of high frequency current harmonic. However, it is difficult to optimize its design because its parameters are mutually influenced while the value of each parameter for LCL filter has impacts on the converter's cost and size. In this paper, the target of optimization is to minimize the parameter values of LCL filter, and an optimization method for parameters of LCL filter of three-phase PWM converter based on least square method is proposed. With this method, a quantitative calculation of the harmonic component of the converter's side phase voltage is performed first, and then the quantitative relationship between phase voltage harmonics and grid phase current harmonics is analyzed. After that, the attenuation requirement of each harmonic is obtained by taking into account the requirements for each harmonic component of grid current. Then according to the optimization objective, the objective function with minimum harmonic attenuation deviation is established, and least squares method is adopted for three-dimensional global searching of parameters for LCL filter. Thus, the designed harmonic attenuation curve approximates the minimum attenuation requirements, and the optimized LCL filter parameters are obtained. Finally, the effectiveness of the method is verified by the experiments.

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“…But all these suffer from the demerits of poor device utilization; the produced variable DC-link voltage causes distortion of currents and voltage of generator and has poor power factor operation. Out of these configurations, two commonly investigated matured alternatives for wind power generation purposes are the AC/DC/AC converter [6][7][8][9][10] and the matrix converter (MC) [11][12][13][14][15][16][17][18]. Although the AC/DC/AC converter has a high energy density and is relatively low in price, there is a serious concern with its large DC-link capacitor due to its size, weight, volume, and premature failure [15,17].…”

Section: Introductionmentioning

confidence: 99%

Development of a Novel Control for a Matrix Converter Interfaced Wind Energy Conversion System for Dynamic Performance Enhancement

Kumar¹,

Joshi²,

Bansal

2015

Electric Power Components and Systems

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This article presents the development of a novel control for matrix converter interfaced permanent magnet wind energy conversion system. Here, an adaptive fuzzy control algorithm incorporated with a reversed matrix converter is proposed to yield maximum energy with enhanced dynamic performance and low harmonic characteristics. The control algorithm is implemented using a dSPACE DS1104 real-time board (dSPACE, Paderborn, Germany). Feasibility of the proposed system has been verified through simulation and experiment results using a laboratory 1.2-kW prototype of a wind energy conversion system under dynamic conditions.

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Modeling Strategy for Back-to-Back Three-Level Converters Applied to High-Power Wind Turbines

Cited by 202 publications

References 23 publications

Asymptotic rejection of sinusoidal disturbances based voltage balance control in back-to-back power converters

Asymptotic rejection of sinusoidal disturbances based voltage balance control in back-to-back power converters

Optimization of Parameters for LCL Filter of Least Square Method Based Three-phase PWM Converter

Development of a Novel Control for a Matrix Converter Interfaced Wind Energy Conversion System for Dynamic Performance Enhancement

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