A new control strategy of variable speed wind turbine generator for three-phase grid-connected applications

Molina, Marcelo G.; Mercado, Pedro

doi:10.1109/tdc-la.2008.4641870

Cited by 50 publications

(31 citation statements)

References 4 publications

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“…For the wind turbine generator, it is most likely that the wind energy can be converted to electrical energy by using the Doubly Fed Induction Generator (DFIG), the synchronous generator and the permanent magnet synchronous generator that have been applied in [13,14,15]. The voltages generated from the generator are connected to the diode recti er and the dc-dc converter in order to control the maximum power generated by the wind source as has been discussed in [13,16,17,18,19,20].…”

Section: Energy Conversionmentioning

confidence: 99%

“…Due to this, a converter is needed in order to control the output power ow to the storage element or to transmit it to the electrical grid network. In this case, the dc-dc converter can be used to control the power generated from the source and at the same time enable the maximum power point tracking [16,17,18,39,40]. For wind energy source, the output voltage from the generator contains variable magnitude current, voltage and frequency.…”

Section: Dc-dc Converter As Power Conditioning In Energy Conversionmentioning

confidence: 99%

“…The single switch or boost converter is a conventional dc-dc converter that is used in power tracking for wind power or fuel cell power applications [17,18,44,45,46,47].…”

Section: Dc-dc Converter As Power Conditioning In Energy Conversionmentioning

confidence: 99%

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Energy recovery from landing aircraft

Zulkifli¹

2012

2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)

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Currently, renewable energy sources are the main driver for future electricity generation. This trend is growing faster in the developed countries in order to reduce the green house e ect and also in response to the limited supply of oil, gas and coal which are currently the major sources for electric generation. For example, the main renewable energy sources are from wind energy and solar energy but these energies are only available to those countries that are exposed to these resources. In this thesis an alternative energy source is investigated where it can be generated from the moving objects or in form of kinetic energy. The idea is to convert the kinetic energy during landing aircraft into electrical energy which it can also be stored and transferred to the existing electrical network. To convert this kinetic energy to electrical energy, the linear generator (LG) and uncontrolled recti er have been used for energy conversion. The LG have been modelled in 3-phase model or in dq model and combined with the diode recti er that is used to generate the dc signal outputs. Due to the uncontrolled recti er the electrical outputs will have decaying amplitude along the landing time. This condition also happen to the LG outputs such as the force and the power output. In order to control these outputs the cascaded buck-boost converter has been used. This converter is responsible to control the output current at the recti er and also the LG output power during landing to more controllable power output. Here, the H ∞ current control strategy has been used as it o ers a very good performance for current tracking and to increase the robustness of the controller. During landing huge power is produced at the beginning and when the landing time is increased, the generated input power from LG is reduced to zero. Due to this, the energy storage that consits of ultracapacitor, bidirectional converter and boost converter are usedin order to store and to release the energy depends on the input power source and load grid power. The voltage proportional-integral (PI) control strategy has been used for both the converters. The last part is to transfer the energy from the source and at the ultracapacitor to the load by using the inverter as the processing device. The power controller and current controller are used at the inverter in order to control the power ow between the inverter and the grid. This is when the reference power is determined from the load power in order to generate the reference current by using the voltage oriented controller (VOC), while the H ∞ current controller is used to regulate the inverter current in order to inject the suitable amount of current that refer to the load power. Finally, a complete energy recovery system for landing aircraft with the grid connection have been put together to make the whole system to be as a new renewable energy source for the future electricity generation.

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Section: Energy Conversionmentioning

confidence: 99%

Section: Dc-dc Converter As Power Conditioning In Energy Conversionmentioning

confidence: 99%

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Energy recovery from landing aircraft

Zulkifli¹

2012

2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)

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“…The method requires both wind speed and rotor speed measurement. In [13] MPPT control of PMSG WECS is implemented via a dc-dc boost converter. The proposed MPPT strategy is based on directly adjusting the dc-dc converter duty cycle according to the result of the comparison of successive WTG output power measurements.…”

Section: Hill Climb Search Controlmentioning

confidence: 99%

“…In [13,18,19], TSR control method of MPPT control for SCIG WECS are presented. In the TSR control method presented in [18] the wind speed is measured for obtaining optimum rotor speed using the value of optimum tip speed ratio.…”

Section: Tip Speed Ratio Controlmentioning

confidence: 99%

MPPT Control Methods in Wind Energy Conversion Systems

Thongam¹,

Ouhrouche²

2011

Fundamental and Advanced Topics in Wind Power

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Tip speed ratio control of a 200 kW VAWT with synchronous generator and variable DC voltage

Eriksson

Kjellin

Bernhoff

2013

Energy Science & Engineering

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A novel control method for a fixed-pitch variable speed wind turbine is introduced and experimental results are presented. The measured absorbed power and rotational speed, together with a look-up table for the aerodynamic efficiency, are used to estimate the wind speed reaching the turbine as well as the tip speed ratio. Thereby, the control is independent on wind speed measurements and the wind turbine itself is used as an anemometer. Tip speed ratio control is implemented by comparing the estimated tip speed ratio to a reference value and adjusting the DC voltage level accordingly. Tip speed ratio control benefits from that the aerodynamic efficiency hardly varies with changing tip speed ratio when close to its optimum value. Experimental results from a 200 kW vertical axis wind turbine are presented. The voltage from the permanent magnet generator is passively rectified and the alternating DC voltage is then inverted, filtered, transformed, and grid connected. The estimated wind speed is compared with the measured wind speed. The absorbed power when tip speed ratio control has been implemented is shown. It is concluded that the presented control method works and some future improvements are discussed.

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A new control strategy of variable speed wind turbine generator for three-phase grid-connected applications

Cited by 50 publications

References 4 publications

Energy recovery from landing aircraft

Energy recovery from landing aircraft

MPPT Control Methods in Wind Energy Conversion Systems

Tip speed ratio control of a 200 kW VAWT with synchronous generator and variable DC voltage

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