Results 1 to 10 of about 56,466 (281)

Innovated Inertia Control of DFIG with Dynamic Rotor Speed Recovery

CSEE Journal of Power and Energy Systems, 2022
High wind power penetration (WPP) is challenging system frequency stability. As a countermeasure, virtual inertia controls are complemented to utilize kinetic energy (KE) stored in wind turbine generator (WTG) for frequency regulation. While without restoration, generation efficiency of WTG will be degraded after inertia contribution.
Huanjing Lao, Li Zhang, Tong Zhao, Liang Zou   +3 more
doaj   +2 more sources

Frequency Modulation and Rotor Speed Recovery Strategy of Doubly-Fed Induction Generator Based on Model Predictive Control

Zhongguo dianli, 2023
The doubly-fed induction generator (DFIG) can participate in the system frequency modulation by releasing the kinetic energy stored in the rotor, but it may cause a secondary frequency drop when the speed is recovered, which is adverse to the frequency ...
Jingjing ZHAO, Ming DU, Shuai LIU, Zibo LI, Wenhe MA   +4 more
doaj   +2 more sources

Simulation of the operating characteristics of an all-metal conical screw pump [PDF]

Scientific Reports
The all-metal conical screw pump can achieve efficient lifting of fluids with different viscosities by adjusting the stator-rotor clearance fit. To investigate the operational characteristics of the all-metal conical screw pump under various fluid ...
Tong Wu, Junliang Li, Qi Xia, Bohan Zhang   +3 more
doaj   +2 more sources

Adaptive Frequency Control Strategy for PMSG-Based Wind Turbines With Improved Rotor Speed Recovery

IEEE Access
In modern power systems, the increasing penetration of renewable energy resources has reduced frequency stability. Consequently, wind turbines (WTs) are expected to participate in frequency regulation.
Duc-Tung Trinh, Yuan-Kang Wu, Manh-Hai Pham   +2 more
doaj   +2 more sources

Cooperative Synthetic Inertia Control for Wind Farms Considering Frequency Regulation Capability

Frontiers in Energy Research, 2021
To fully utilize the frequency regulation (FR) capability of wind turbines (WTs) and to avoid a secondary frequency drop caused by the rotor speed recovery, this paper firstly proposes an FR capability evaluation method for wind farms based on the ...
Qiaoming Shi, Lei Liu, Yongping Wang, Yu Lu, Qiang Zou, Qingwu Zhang, Hongqing Liu   +6 more
doaj   +1 more source

Innovative Inertial Response Imitation and Rotor Speed Recovery Control Scheme for a DFIG

Electronics, 2023
This paper proposes an innovative inertial response imitation (IRI) and rotor speed recovery (RSR) control scheme of a doubly-fed induction generator (DFIG, Type 3 wind turbine generator) to provide better frequency support response and RSR services for a high wind power penetrated electric power grid.
Xiaocen Xue, Jiejie Huang, Shun Sang
openaire   +1 more source

Numerical Simulation of Compressor Stall Recovery Control

Shanghai Jiaotong Daxue xuebao, 2021
In order to explore the influencing factors of the effectiveness and stability for stall recovery and its flow mechanism when the antisurge valve is opened quickly, the dynamic stall recovery processes are simulated and the recovery processes at ...
GAO Yuan, WU Yadong, OUYANG Hua
doaj   +1 more source

Flexible Frequency Response Strategy with Smooth Rotor Speed Recovery of a DFIG-Based Wind Turbine

Electronics, 2023
Grid frequency must be regulated in its nominal range to guarantee the stable operation of an electric power grid. Excessive grid frequency excursions result in load shedding, grid frequency instability, or even synchronous generator damage. With the growing wind penetration, there is an increasing issue about the reduction in inertia response.
Xiaocen Xue, Shun Sang, Jiejie Huang
openaire   +1 more source

Experimental Study on the Effect of the Blade Tip Distance on the Power and the Wake Recovery with Small Multi-Rotor Wind Turbines

Journal of Marine Science and Engineering, 2023
In order to investigate the output power and wake velocity of small multi-rotor wind turbines compared to single-rotor wind turbines, which operate in the same swept area at various blade tip distances, this paper used the wind tunnel test method to ...
Sen Gong, Kai Pan, Hua Yang, Junwei Yang
doaj   +1 more source

An adaptive droop control strategy with smooth rotor speed recovery capability for type III wind turbine generators

International Journal of Electrical Power & Energy Systems, 2022
Abstract This paper presents an adaptive droop control scheme with smooth rotor speed recovery capability for doubly-fed induction generators (DFIGs, type III wind turbine generators) to improve the frequency nadir, minimize the second drop in the frequency, and regulate the time to meet the MPPT curve. To this end, an adaptive droop gain that decays
Dejian Yang, Zhaoyang Jin, Taiying Zheng, Enshu Jin   +3 more
openaire   +1 more source