Article
Engineering, Electrical & Electronic
Shuning Gao, Haoran Zhao, Yonghao Gui, Dao Zhou, Frede Blaabjerg
Summary: A novel voltage-modulated direct power control (VM-DPC) strategy is proposed for the back-to-back (BTB) converter in the doubly fed induction generator (DFIG) system. This method uses a simple feed-forward and feedback structure, making it easily implementable in the BTB converter. Additionally, it transforms the closed-loop DFIG system into a linear-time-invariant one, allowing for analysis and design using multiple linear control techniques.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Energy & Fuels
Zhichao Liu, Junlin Li, Chengxiong Mao, Dan Wang, Zhitao Guan, Cong Xie, Jingqi Li, Yuanzhuo Qi
Summary: This paper presents a layered frequency control strategy for a doubly-fed induction diesel generator in an emergency scenario. The strategy enables automatic secondary frequency regulation, ensuring the stable operation of the emergency power supply.
Article
Engineering, Mechanical
Wei Chen, Jiangtao Li, Kun Wang, Zhanhong Wei
Summary: This paper proposes an analytical method based on bifurcation theory and frequency domain fast-slow scale coupling to explain the oscillation process of a doubly fed induction generator (DFIG) and its formation mechanism under external disturbance. The mathematical model of the DFIG system is established and a two-parameter bifurcation diagram is introduced to analyze the bifurcation mechanism. A three-dimensional overlay diagram is used to analyze the bursting oscillation process caused by the codimension 2-bifurcation.
NONLINEAR DYNAMICS
(2023)
Article
Engineering, Electrical & Electronic
Litong Xu, Ming Cheng, Xinchi Wei, Xiaoming Yan, Yu Zeng
Summary: This article investigates the modeling and control of brushless doubly fed induction generator (BDFIG) under an unbalanced network, proposing a current control strategy to achieve control targets. Experimental results demonstrate the effectiveness of the control strategy in suppressing the power and current oscillation of a BDFIG system under the unbalanced network.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Automation & Control Systems
Robin F. Conchas, Edgar N. Sanchez, Luis J. Ricalde, Jesus G. Alvarez, Alma Y. Alanis
Summary: This study proposes a sensor fault-tolerant controller for a doubly fed induction generator connected to a smart grid. The proposed method combines a trained recurrent high-order neural network and a modified discrete-time sliding mode controller to effectively control the doubly fed induction generator in the presence of sensor faults.
ENGINEERING APPLICATIONS OF ARTIFICIAL INTELLIGENCE
(2023)
Article
Green & Sustainable Science & Technology
Jesus Castro Martinez, Jose Luis Rodriguez Amenedo, Santiago Arnaltes Gomez, Jaime Alonso-Martinez
Summary: This paper proposes a novel grid-forming control scheme for doubly-fed induction generators, so they behave as real voltage sources. The proposed control system is based on the orientation of the rotor flux to a reference axis obtained from the emulation of the synchronous generator swing equation. The control system has been validated through real-time simulation with hardware in the loop and small signal analysis to assess system stability.
Article
Green & Sustainable Science & Technology
Yi Ye, Zelin Yang, Jiawei Hu, Haopeng Yi, Lu Zhang
Summary: In this study, a coordinated control scheme of hardware and optimal control strategy is proposed to improve the zero-voltage ride through capability of a doubly fed induction generator in high proportion new energy grid during extreme faults. Mathematical derivation and simulation verification show that the adopted control strategy can effectively avoid the exceeding of rotor current and voltage limits, provide reactive power support, and reduce the risk of high voltage failure at the point of failure. The control effect is significantly better than traditional virtual impedance control.
Article
Energy & Fuels
Marcelo Patricio de Santana, Geyverson Teixeira de Paula, Carlos Matheus Rodrigues de Oliveira, Fernando de Almeida Borges, Helmo Kelis Morales Paredes, Jose Roberto Boffin de Almeida Monteiro
Summary: This paper introduces a novel vector control topology for mitigating stator current harmonic in Doubly Fed Induction Generator caused by grid voltage harmonic content, with the proposed HVC controller able to reduce any desired current harmonic effectively.
IEEE TRANSACTIONS ON ENERGY CONVERSION
(2021)
Article
Automation & Control Systems
Yongchang Zhang, Tao Jiang
Summary: This article proposes a robust predictive stator current control (RPCC) method for DFIGs, which solves the performance deterioration caused by machine parameter variations by using the current error between the measured value and the predicted value. Furthermore, the combination with a support vector machine ensures parameter robustness and small steady-state power ripples.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Green & Sustainable Science & Technology
Chunyang Gao, Xiangyang Yu, Haipeng Nan, Chuangshe Men, Peiyu Zhao, Qingsen Cai, Jianing Fu
Summary: This study investigates the stability of a doubly-fed variable speed pump-turbine governing system under small power disturbances using Hopf bifurcation theory. The results show that the stability domain in pump mode is larger than that in turbine mode, and the system's stability depends on different controller parameters.
Article
Energy & Fuels
Wei Chen, Qiangqiang Li, Zhanhong Wei, Cong Ding, Kun Wang
Summary: In this study, a method for analyzing the bifurcation characteristics of the doubly-fed induction generator (DFIG) model was developed using topologically equivalent dimensionality reduction based on the central manifold theorem. The Hopf bifurcation type of the DFIG was discriminated by establishing a complex frequency domain model and calculating the critical open-loop gain point. The stability index of the Hopf bifurcation was used to determine the Hopf bifurcation type, and a nonlinear time-domain simulation was conducted to verify the stability of the DFIG under different tuning parameters.
ENERGY SCIENCE & ENGINEERING
(2023)
Article
Automation & Control Systems
Hamidreza Mosaddegh Hesar, Xiaodong Liang, Mohammad Ali Salahmanesh, Mojtaba Ayaz Khoshhava, Salman Abdi
Summary: This article proposes two efficient vector control schemes for BDFIM drive, based on a novel MTPA control strategy and verified their stability using Lyapunov control theory. Experimental results show that the proposed schemes outperform optimal proportional-integral controllers under changing reference speed and load torque.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Automation & Control Systems
Md Abid Hossain, Marc Bodson
Summary: Brushless doubly-fed induction machines are potential alternatives to regular doubly-fed induction generators, offering higher reliability and lower maintenance costs. They can also be utilized in hybrid-electric propulsion systems, such as aircraft propulsion. The article presents a new speed control algorithm that maximizes torque within current limits and ensures anti-windup protection, based on a simplified mathematical model and control algorithm. The results demonstrate fast responses and exchange of power directly through the windings.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Automation & Control Systems
Yu Zeng, Ming Cheng, Xinchi Wei, Gan Zhang
Summary: This article suggests an improved vector control scheme for the dual-stator brushless doubly fed induction generator during standalone operation, utilizing the power winding magnetizing current as the control object to reduce demagnetization effects and simplify the outer voltage loop design. The main goal is to enhance system transient performance through the design of an improved standalone controller. A prototype of the generator employing the proposed scheme is used for validation in this study.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2021)
Article
Energy & Fuels
Abrar Ahmed Chhipa, Prasun Chakrabarti, Vadim Bolshev, Tulika Chakrabarti, Gennady Samarin, Alexey N. Vasilyev, Sandeep Ghosh, Alexander Kudryavtsev
Summary: Wind energy conversion systems (WECS) are an important and rapidly growing source of electrical power generation that can improve power supply in remote communities. This study proposes a control strategy based on maximum power point tracking (MPPT) to optimize the performance and efficiency of WECS under fluctuating wind speeds, and simulation results validate its effectiveness and good dynamic performance.
Article
Mathematics, Interdisciplinary Applications
Bo Li, Tian Huang
Summary: This paper proposes an approximate optimal strategy based on a piecewise parameterization and optimization (PPAO) method for solving optimization problems in stochastic control systems. The method obtains a piecewise parameter control by solving first-order differential equations, which simplifies the control form and ensures a small model error.
CHAOS SOLITONS & FRACTALS
(2024)
Article
Mathematics, Interdisciplinary Applications
Guram Mikaberidze, Sayantan Nag Chowdhury, Alan Hastings, Raissa M. D'Souza
Summary: This study explores the collective behavior of interacting entities, focusing on the co-evolution of diverse mobile agents in a heterogeneous environment network. Increasing agent density, introducing heterogeneity, and designing the network structure intelligently can promote agent cohesion.
CHAOS SOLITONS & FRACTALS
(2024)
Article
Mathematics, Interdisciplinary Applications
Gengxiang Wang, Yang Liu, Caishan Liu
Summary: This investigation studies the impact behavior of a contact body in a fluidic environment. A dissipated coefficient is introduced to describe the energy dissipation caused by hydrodynamic forces. A new fluid damping factor is derived to depict the coupling between liquid and solid, as well as the coupling between solid and solid. A new coefficient of restitution (CoR) is proposed to determine the actual physical impact. A new contact force model with a fluid damping factor tailored for immersed collision events is proposed.
CHAOS SOLITONS & FRACTALS
(2024)
