Direct Active and Reactive Power Control of DFIG for Wind Energy Generation

Xu, Lie; Cartwright, P.

doi:10.1109/tec.2006.875472

Cited by 634 publications

(306 citation statements)

References 19 publications

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“…To help to control this power, a power conditioning con guration can be used as shown in Figure 2.3; this uses wind as a source and consists of a synchronous generator, a diode recti er and a dc-dc converter. 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%

“…The DPC strategy has been used in [13,98,104,105]. The DPC is based on the Direct Torque Control (DTC) which has been used in controlling the motor regarding the rotating ux.…”

Section: Power Control Technique At the Invertermentioning

confidence: 99%

“…The DPC is based on the Direct Torque Control (DTC) which has been used in controlling the motor regarding the rotating ux. For the DPC control, the switching signals that are used for the inverter switches are generated from the switching table, based on the error between the reference and the measured real and reactive power [13]. The advantage of using DPC is that the inner current loop and PWM switching model are not needed, because the switching is based on the look-up table that is based on the hysteresis control [98,106].…”

Section: Power Control Technique At the Invertermentioning

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%

“…The DPC strategy has been used in [13,98,104,105]. The DPC is based on the Direct Torque Control (DTC) which has been used in controlling the motor regarding the rotating ux.…”

Section: Power Control Technique At the Invertermentioning

confidence: 99%

Section: Power Control Technique At the Invertermentioning

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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“…Theorem 2: Using the controller described by (18)(19), the controlled torque and flux amplitude of the DFIM are stable.…”

Section: Input-output Feedback Controlmentioning

confidence: 99%

“…For the sake of comparison, the method in this paper is compared with the one in [18], where a direct active and reactive power control strategy for DFIG has been used. This method was first used in three-phase PWM rectifiers [19], where the converter switching states were selected from an optimal switching table …”

Section: System Simulationmentioning

confidence: 99%

Robust Speed Sensorless Control of Doubly-Fed Induction Machine Based on Input-Output Feedback Linearization Control Using a Sliding-Mode Observer

Payam

Jalalifar

2006

2006 International Conference on Power Electronic, Drives and Energy Systems

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Abstract:In this paper, a nonlinear controller is presented for Doubly-Fed Induction Machine (DFIM) drives. The nonlinear controller is designed based on the input-output feedback linearization control technique, combined with a sliding-mode observer, using the fifth order mo del of the doubly-fed induction machine in fixed stator d-q axis reference frame with stator current and rotor flux components as state variables. The nonlinear controller can perfectly track the torque and flux reference signals in spite of stator and rotor resistance variations. In order to make the drive system capable of operating in the motoring and generating modes both below and above synchronous speed, two level SVM -PWM back-to-back voltage source inverters are employed in the rotor circuit. Computer simulation results obtained, confirm the effectiveness and validity of the proposed control approach.

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Robust direct power control with simple on‐line evaluation for distributed generation

Zabihi

Asadi

2021

Int Trans Electr Energ Syst

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Summary This article presents a direct power control (DPC) method to cover entire power limit area (PLA) of grid‐connected converter for Distributed Generation (DG) application. By using of the Lyapunov theory, an online decision‐making process is designed in which the optimum switching state of converter is determined only based on interactions between grid/converter voltages and power errors. The proposed method neither needs small sampling time nor system's parameters. In this paper, two major tracking indexes are evaluated throughout PLA: apparent power error and average switching frequency. This evaluations lead to a better analysis of the controllers' behavior across the entire operation range (ie, PLA). Effects of different sampling times and parameter mismatch are depicted in the results, which indicate optimum and reliable performances of the proposed method.

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Direct Active and Reactive Power Control of DFIG for Wind Energy Generation

Cited by 634 publications

References 19 publications

Energy recovery from landing aircraft

Energy recovery from landing aircraft

Robust Speed Sensorless Control of Doubly-Fed Induction Machine Based on Input-Output Feedback Linearization Control Using a Sliding-Mode Observer

Robust direct power control with simple on‐line evaluation for distributed generation

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