Distributed Complementary Control Research of Wind Turbines in Two Offshore Wind Farms

Wang, Bing; Tian, Min; Lin, Tingjun; Hu, Yinlong

doi:10.3390/su10020553

Cited by 2 publications

(2 citation statements)

References 27 publications

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“…At the same time, the control law u = u dr u qr = K + µ is designed with pre-feedback K and output feedback µ, and the PCH-D form of the closed-loop System (1) is obtained [23].…”

Section: Single-machine Hamiltonian Realization Of Doubly Fed Wind Tumentioning

confidence: 99%

Distributed Control Strategy of the Leader-Follower for Offshore Wind Farms under Fault Conditions

et al. 2019

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Because of the complexity and severity of the marine environment, the probability of failure of offshore wind farms is much higher than that of onshore wind farms. The original control might fail under a single-machine and the network communication faults of wind turbines. In this study, centralized control is replaced with distributed control, the leader-follower distributed control strategy under two types of fault conditions is proposed to reduce the adverse effect of failure on the system and improve the tolerance of the system. First, the single-machine system is expanded into a wind turbine cluster system model based on Hamiltonian energy theory. Then, a leader-follower distributed control strategy is proposed to ensure the stable operation of wind turbines under a single-machine fault of the leader or follower unit. Next, considering communication failure, the leader-follower control strategy in the weakly connected topology is designed to make the system and the active power output stable. Finally, the simulation results confirm that the leader-follower control strategy system can enhance the stability and reliability of the system in the case of a unit shut down and network communication faults.

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“…At the same time, the control law u = u dr u qr = K + µ is designed with pre-feedback K and output feedback µ, and the PCH-D form of the closed-loop System (1) is obtained [23].…”

Section: Single-machine Hamiltonian Realization Of Doubly Fed Wind Tumentioning

confidence: 99%

Distributed Control Strategy of the Leader-Follower for Offshore Wind Farms under Fault Conditions

et al. 2019

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“…The European Commission stated that the offshore wind power capacity in Europe would reach 450 GW by 2050, making it a key part of renewable energy [4]. Compared with its onshore counterpart, an offshore wind farm has the merits of less land occupation, higher wind speeds, and more stable wind conditions [5][6][7]. However, there are some problems that need to be solved, such as the difficulties of installation and maintenance [8,9].…”

Section: Introductionmentioning

confidence: 99%

A High-Gain DC Side Converter with a Ripple-Free Input Current for Offshore Wind Energy Systems

Tao¹,

Yue²,

Huang³

et al. 2022

Sustainability

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Considering that the distance between offshore wind farms and onshore converters is getting farther and farther, dc transmission becomes increasingly more applicable than conventional ac transmission. To reduce the transmission loss, a feasible solution is using a high-gain dc/dc converter to boost the rectified output voltage to thousands of volts. Thus, a novel single-switch high-gain dc/dc converter with a ripple-free input current is presented in this paper. The structure consists of two cells—a coupled-inductor cell and a switched-capacitor cell. The coupled-inductor cell in the proposed converter provides a ripple-free input current. The switched-capacitor cell provides a high voltage gain. The converter has a simple control strategy due to the use of a single switch. Moreover, the output capacitor is charged and discharged continuously by a 180° phase shift to eliminate the output voltage ripple. A steady-state analysis of the converter is proposed to determine the parameters of the devices. In addition, a 240 W, 40/308 V laboratory prototype at 35 kHz switching frequency has been developed, in which the input current ripple is only 1.1% and a peak efficiency of 94.5% is reached. The experimental results verify the validity and feasibility of the proposed topology.

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Distributed Complementary Control Research of Wind Turbines in Two Offshore Wind Farms

Cited by 2 publications

References 27 publications

Distributed Control Strategy of the Leader-Follower for Offshore Wind Farms under Fault Conditions

Distributed Control Strategy of the Leader-Follower for Offshore Wind Farms under Fault Conditions

A High-Gain DC Side Converter with a Ripple-Free Input Current for Offshore Wind Energy Systems

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