Performance improvement of wind energy conversion system using matrix converter

Ashfaq, Haroon; Tripathi, Surendra Kumar

doi:10.1109/iicpe.2012.6450425

Cited by 6 publications

(3 citation statements)

References 20 publications

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“…Predictive control has been implemented in IMCs for motor drives (which are mainly aimed to military and aerospace applications where size and weight are relevant issues [3], [4]) as well as in DFIGs for renewable energy systems [21]. Other recent studies focus their efforts on achieving better efficiency solutions with IMC-DFIG systems as in [41]- [43], and for the specific topic of low voltage ride-through in [44]; the four of them featuring different techniques such as fuzzy logic, sigma-delta modulation and space vector modulation.…”

Section: Index Terms-ac/acmentioning

confidence: 98%

Model-Based Predictive Rotor Current Control for Grid Synchronization of a DFIG Driven by an Indirect Matrix Converter

Elizondo

Olloqui

Rivera

et al. 2014

IEEE J. Emerg. Sel. Topics Power Electron.

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A novel predictive rotor current control scheme for a doubly fed induction generator (DFIG) is implemented to perform the DFIG grid synchronization with a fast dynamic response. With this control strategy applied to an experimental setup, the rotor currents swiftly follow the necessary reference for grid synchronization in the range of ±30% of the generator rated shaft speed. The DFIG and converter discrete models are used to predict the behavior of the rotor currents. By minimizing the error between the references and the predictive rotor currents for each of the valid states of the converter, the best-suited switching state is selected and applied at the next sampling time. In order to validate the feasibility of implementing this approach, simulations and experiments were carried out for various shaft speed profiles.

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Section: Index Terms-ac/acmentioning

confidence: 98%

Model-Based Predictive Rotor Current Control for Grid Synchronization of a DFIG Driven by an Indirect Matrix Converter

Elizondo

Olloqui

Rivera

et al. 2014

IEEE J. Emerg. Sel. Topics Power Electron.

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“…During super synchronous operation condition, the power is fed to the grid from rotor of DFIG is known as slip power recovery. During the operation when power is fed from grid to rotor of DFIG, a high-voltage stress continues across the switches of PEC (Ugalde-Loo et al 2013;Blaabjerg et al 2012;Garcés and Molinas 2012;Ashfaq and Tripathi 2012;Soufi et al 2013). Hence high dc voltage exists; this is also a factor responsible for the CMV.…”

Section: Analysis and Review Of Matrix Converter Performancementioning

confidence: 99%

Mitigation of operational losses in matrix converter fed DFIG for WECS

Ashfaq

Tripathi

2015

Renewables

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With the change in the wind profile, the speed of doubly fed induction generator (DFIG) of wind energy conversion system (WECS) changes from super synchronous to sub synchronous range and vice versa. DFIG is operated to generate quality power; hence, power at rotor side is controlled using matrix converter taking power from grid and feeding back power to the grid depending on the wind profile. Input voltage required to be fed to the rotor side of DFIG is always changing and depends on the speed of the available wind. During the operation when power is fed from grid to rotor of DFIG, a high-voltage stress continues across the switches of power electronic converter (PEC). In existing topologies of the matrix converter used with the DFIG in WECS, the constant voltage stress at the power electronic switch (PES) is available which causes the higher losses across the switch. This also causes common mode voltage (CMV) which leads to the over voltage stress. This may cause winding insulation damage and bearing failure of the DFIG. Furthermore, higher dv/dt of CMV raises the leakage current which causes the thermal stress and electromagnetic noise to the equipments installed near the matrix converter. In this paper, the work done is focused on the mitigation of operational losses in matrix converter fed doubly fed induction generator for wind energy conversion system. The overall loss in the matrix converter and mitigation of common mode voltage is achieved, which improves the overall efficiency and the performance of the wind energy conversion system.

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“…Intelligent control strategies for energy optimization include the data-mining methods, which also consider the power demand from the utility grid, as well as MPPT techniques. On the basis of literature survey the various possible MPPT techniques which are currently in practice are identified [16] - [21]. MPPT algorithms by changing the speed reference in the desired direction.…”

Section: Mppt For Energy Capturementioning

confidence: 99%

Wind Energy Conversion System Integrated with Grid under Variable Speed Scenario

Ashfaq¹,

Tripathi²

2015

IJAREEIE

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ABSTRACT:The recent sensitive issue of climate change is due to the extensive amount of carbon emission through the consumption of fossil fuel as the primary option for energy demand. Due to the negative impact of green house effect, the alternative and renewable energy options have received significant attention global scale. The two branched approach of renewable energy projects including the reduction in the global greenhouse gas emissions and encouragement to the development of alternate green energy options like wind energy. Wind energy has become one of most acceptable solution among the different renewable energy resources because of the application of power electronic based controllers that allows the wind energy conversion system (WECS) to generate quality electric power irrespective of variable wind profile. The continuous flow of quality power from WECS to grid is insured for wider range of wind speed. Doubly fed induction generator (DFIG) used in WECS having power electronic converter which requires very small friction of power in comparison to the total generation capacity. This paper brings out the analysis of a DFIG system in terms of its stator and rotor currents and real and reactive power balance when the machine is operating with varying wind velocity conditions. Various possible maximum power point tracking techniques are listed in the paper. The suitable Maximum power point tracking (MPPT) technique has also been suggested to harness maximum available power for a given wind velocity to ensure the continuous power flow from WECS to the power grid.

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Performance improvement of wind energy conversion system using matrix converter

Cited by 6 publications

References 20 publications

Model-Based Predictive Rotor Current Control for Grid Synchronization of a DFIG Driven by an Indirect Matrix Converter

Model-Based Predictive Rotor Current Control for Grid Synchronization of a DFIG Driven by an Indirect Matrix Converter

Mitigation of operational losses in matrix converter fed DFIG for WECS

Wind Energy Conversion System Integrated with Grid under Variable Speed Scenario

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