A Simplified Stator Frequency and Power Control Method of DFIG-DC System Without Stator Voltage and Current Sensors

Chao Wu, Yingzong Jiao, Heng Nian, Frede Blaabjerg

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

The primary objective of the grid connected DFIG-DC system is to achieve the accurate control of stator frequency and active power. In this letter, a simplified power control method is proposed by just controlling the magnitude of the rotor current vector, which can avoid the stator voltage and current sensors. The stator active power is calculated by the product of dc voltage and dc current. The stator frequency is simply controlled by the rotating speed of the rotor current vector which is achieved through a given rotating frame. Furthermore, the parameter dependency and dc sampling offset problems can be eliminated because the voltage model or current model which are usually used for acquiring stator frequency and stator flux angle can be avoided. Therefore, the robustness and stability of the stator frequency and power control can be improved. Finally, experiments based on a 1 kW DFIG-DC setup is carried out to verify the proposed method.
OriginalsprogEngelsk
TidsskriftI E E E Transactions on Power Electronics
ISSN0885-8993
DOI
StatusUdgivet - 2020

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Power control
Stators
Sensors
Electric potential
Rotors
Fluxes
Sampling
Experiments

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title = "A Simplified Stator Frequency and Power Control Method of DFIG-DC System Without Stator Voltage and Current Sensors",
abstract = "The primary objective of the grid connected DFIG-DC system is to achieve the accurate control of stator frequency and active power. In this letter, a simplified power control method is proposed by just controlling the magnitude of the rotor current vector, which can avoid the stator voltage and current sensors. The stator active power is calculated by the product of dc voltage and dc current. The stator frequency is simply controlled by the rotating speed of the rotor current vector which is achieved through a given rotating frame. Furthermore, the parameter dependency and dc sampling offset problems can be eliminated because the voltage model or current model which are usually used for acquiring stator frequency and stator flux angle can be avoided. Therefore, the robustness and stability of the stator frequency and power control can be improved. Finally, experiments based on a 1 kW DFIG-DC setup is carried out to verify the proposed method.",
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A Simplified Stator Frequency and Power Control Method of DFIG-DC System Without Stator Voltage and Current Sensors. / Wu, Chao; Jiao, Yingzong; Nian, Heng; Blaabjerg, Frede.

I: I E E E Transactions on Power Electronics, 2020.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - A Simplified Stator Frequency and Power Control Method of DFIG-DC System Without Stator Voltage and Current Sensors

AU - Wu, Chao

AU - Jiao, Yingzong

AU - Nian, Heng

AU - Blaabjerg, Frede

PY - 2020

Y1 - 2020

N2 - The primary objective of the grid connected DFIG-DC system is to achieve the accurate control of stator frequency and active power. In this letter, a simplified power control method is proposed by just controlling the magnitude of the rotor current vector, which can avoid the stator voltage and current sensors. The stator active power is calculated by the product of dc voltage and dc current. The stator frequency is simply controlled by the rotating speed of the rotor current vector which is achieved through a given rotating frame. Furthermore, the parameter dependency and dc sampling offset problems can be eliminated because the voltage model or current model which are usually used for acquiring stator frequency and stator flux angle can be avoided. Therefore, the robustness and stability of the stator frequency and power control can be improved. Finally, experiments based on a 1 kW DFIG-DC setup is carried out to verify the proposed method.

AB - The primary objective of the grid connected DFIG-DC system is to achieve the accurate control of stator frequency and active power. In this letter, a simplified power control method is proposed by just controlling the magnitude of the rotor current vector, which can avoid the stator voltage and current sensors. The stator active power is calculated by the product of dc voltage and dc current. The stator frequency is simply controlled by the rotating speed of the rotor current vector which is achieved through a given rotating frame. Furthermore, the parameter dependency and dc sampling offset problems can be eliminated because the voltage model or current model which are usually used for acquiring stator frequency and stator flux angle can be avoided. Therefore, the robustness and stability of the stator frequency and power control can be improved. Finally, experiments based on a 1 kW DFIG-DC setup is carried out to verify the proposed method.

U2 - 10.1109/TPEL.2019.2953677

DO - 10.1109/TPEL.2019.2953677

M3 - Journal article

JO - I E E E Transactions on Power Electronics

JF - I E E E Transactions on Power Electronics

SN - 0885-8993

ER -