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| 1 | 矩阵变换器的建模与仿真(英文)显示文摘该文着重讨论矩阵变换器的建模与仿真。文中给出了矩阵变换器的两种模型:基于间接空间矢量调制法的模型和基于功率守恒方程的模型,详细介绍了这两种模型建立的理论基础和建立过程,并结合这两种模型在研究不同问题时的仿真结果,说明模型难有绝对的好坏之分,应针对不同的问题采用不同的模型。文中同时也介绍了矩阵变换器建模中应注意的问题及技巧,为深入进行矩阵变换器的仿真研究提供了参考和借鉴。 | 刘芙蓉 Klumpner Christian Blaabjerg Frede | 2005 | 中国电机工程学报2005,25,9: | 26 |
| 2 | Control of hybrid AC/DC microgrid under islanding operational conditions显示文摘This paper presents control methods for hybrid AC/DC microgrid under islanding operation condition.The control schemes for AC sub-microgrid and DC sub-microgrid are investigated according to the power sharing requirement and operational reliability.In addition,the key control schemes of interlinking converter with DC-link capacitor or energy storage,which will devote to the proper power sharing between AC and DC sub-microgrids to maintain AC and DC side voltage stable,is reviewed.Combining the specific control methods developed for AC and DC sub-microgrids with interlinking converter,the whole hybrid AC/DC microgrid can manage the power flow transferred between sub-microgrids for improving on the operational quality and efficiency. | Guangqian DING Feng GAO Song ZHANG Poh Chiang LOH Frede BLAABJERG | 2014 | Journal of Modern Power Systems and Clean Energy2014,2,3: | 23 |
| 3 | Modeling framework of voltage-source converters based on equivalence with synchronous generator显示文摘Along with the increasing penetration of distributed generation with voltage-source converters(VSCs),there are extensive concerns over the potential virtual rotor angle stability, which is characterized by oscillations of power and frequency during the dynamic process of synchronization in the grid. Several control strategies have been developed for VSCs to emulate rotating inertia as well as damping of oscillations. This paper classifies these strategies and provides a small-signal modeling framework including all kinds of VSCs in different applications for virtual rotor angle stability. A unified perspective based on the famous Phillips–Heffron model is established for various VSCs. Thus, the concepts of equivalent inertia and the synchronizing and damping coefficients in different VSCs are highlighted, based on the similarities with the synchronous generator(SG) system in both physical mechanisms and mathematical models. It revealed the potentiality of various VSCs to achieve equivalence with the SG. This study helps promote the unity of VSCs and traditional SGs in both theories and methods for analyzing the dynamic behavior and enhancing the stability. Finally,future research needs and new perspectives are addressed. | Shulong TAN Hua GENG Geng YANG Huai WANG Frede BLAABJERG | 2018 | Journal of Modern Power Systems and Clean Energy2018,6,6: | 15 |
| 4 | Modelling, Implementation, and Assessment of Virtual Synchronous Generator in Power Systems显示文摘As more and more power electronic based generation units are integrated into power systems, the stable operation of power systems has been challenged due to the lack of system inertia. In order to solve this issue, the virtual synchronous generator(VSG), in which the power electronic inverter is controlled to mimic the characteristics of traditional synchronous generators, is a promising strategy. In this paper, the representation of the synchronous generator in power systems is firstly presented as the basis for the VSG. Then the modelling methods of VSG are comprehensively reviewed and compared.Applications of the VSG in power systems are summarized as well. Finally, the challenges and future trends of the VSG implementation are discussed. | Meng Chen Dao Zhou Frede Blaabjerg | 2020 | Journal of Modern Power Systems and Clean Energy2020,8,3: | 6 |
| 5 | Autonomous Power Management for Interlinked AC-DC Microgrids显示文摘The existing power management schemes for interlinked AC-DC microgrids have several operational drawbacks.Some of the existing control schemes are designed with the main objective of sharing power among the interlinked microgrids based on their loading conditions,while other schemes regulate the voltage of the interlinked microgrids without considering the specific loading conditions.However,the existing schemes cannot achieve both objectives efficiently.To address these issues,an autonomous power management scheme is proposed,which explicitly considers the specific loading condition of the DC microgrid before importing power from the interlinked AC microgrid.This strategy enables voltage regulation in the DC microgrid,and also reduces the number of converters in operation.The proposed scheme is fully autonomous while it retains the plug-nplay features for generators and tie-converters.The performance of the proposed control scheme has been validated under different operating scenarios.The results demonstrate the effectiveness of the proposed scheme in managing the power deficit in the DC microgrid efficiently and autonomously while maintaining the better voltage regulation in the DC microgrid. | Inam Ullah Nutkani Lasantha Meegahapola Loh Poh Chiang Andrew Frede Blaabjerg | 2018 | CSEE Journal of Power and Energy Systems2018,4,1: | 4 |
| 6 | LLCL型单相并网逆变器在不同滤波电感组合情况下的损耗计算显示文摘随着LLCL型并网滤波器的提出,大电流纹波工况下工作的并网逆变器受到重视;此时,如果按传统方法进行逆变器的效率分析会带来偏差。本文提出了一套完整的并网逆变器的效率计算方法,并以采用不连续单极性调制的LLCL型单相并网逆变器为例进行了损耗分析与计算。具体推导了逆变器侧的电感电流表达式,然后根据IGBT的特性及制造商提供的特性参数,采取曲线拟合的方法来计算逆变器的损耗,这使得并网逆变器在大纹波电流条件下的效率计算更为准确,也对LLCL滤波器的初始设计或参数优化有着重要的指导性作用。该方法也适用于采用其他调制方式或其他滤波器的并网逆变器的损耗计算。最后,基于2 kW的单相并网逆变器平台,将理论分析结果与实验结果进行了对比验证分析。 | 吴慧韫 吴卫民 黄敏 Frede Blaabjerg | 2013 | 电工电能新技术2013,32,3: | 4 |
| 7 | Deep Reinforcement Learning Based Approach for Optimal Power Flow of Distribution Networks Embedded with Renewable Energy and Storage Devices显示文摘This study proposes a deep reinforcement learning(DRL)based approach to analyze the optimal power flow(OPF)of distribution networks(DNs)embedded with renewable energy and storage devices.First,the OPF of the DN is formulated as a stochastic nonlinear programming problem.Then,the multi-period nonlinear programming decision problem is formulated as a Markov decision process(MDP),which is composed of multiple single-time-step sub-problems.Subsequently,the state-of-the-art DRL algorithm,i.e.,proximal policy optimization(PPO),is used to solve the MDP sequentially considering the impact on the future.Neural networks are used to extract operation knowledge from historical data offline and provide online decisions according to the real-time state of the DN.The proposed approach fully exploits the historical data and reduces the influence of the prediction error on the optimization results.The proposed real-time control strategy can provide more flexible decisions and achieve better performance than the pre-determined ones.Comparative results demonstrate the effectiveness of the proposed approach. | Di Cao Weihao Hu Xiao Xu Qiuwei Wu Qi Huang Zhe Chen Frede Blaabjerg | 2021 | Journal of Modern Power Systems and Clean Energy2021,9,5: | 4 |
| 8 | 电力电子是风力发电的主要技术显示文摘本文回顾风力发电市场,叙述了和传统的电力发电相比,在以后的几年中风能将成为更具竞争力的能源之一。还介绍了固定速度和调速风力发电机以及拓扑结构、不同风力发电系统的比较及控制方案,最后指出风力发电机技术的未来发展趋势是进一步提高功率等级和电力电子技术。 | Frede Blaabjerg | 2005 | 电力电子2005,3,4: | 3 |
| 9 | Power Electronics:The Enabling Technology for Renewable Energy Integration显示文摘The markedly increased integration of renewable energy in the power grid is of significance in the transition to a sustainable energy future.The grid integration of renewables will be continuously enhanced in the future.According to the International Renewable Energy Agency(IRENA),renewable technology is the main pathway to reach zero carbon dioxide(CO_(2))emissions by 2060.Power electronics have played and will continue to play a significant role in this energy transition by providing efficient electrical energy conversion,distribution,transmission,and utilization.Consequently,the development of power electronics technologies,i.e.,new semiconductor devices,flexible converters,and advanced control schemes,is promoted extensively across the globe.Among various renewables,wind energy and photovoltaic(PV)are the most widely used,and accordingly these are explored in this paper to demonstrate the role of power electronics.The development of renewable energies and the demands of power electronics are reviewed first.Then,the power conversion and control technologies as well as grid codes for wind and PV systems are discussed.Future trends in terms of power semiconductors,reliability,advanced control,grid-forming operation,and security issues for largescale grid integration of renewables,and intelligent and full user engagement are presented at the end. | Zhongting Tang Yongheng Yang Frede Blaabjerg | 2022 | CSEE Journal of Power and Energy Systems2022,8,1: | 3 |
| 10 | Modern Control Strategies of Doubly-Fed Induction Generator Based Wind Turbine System显示文摘A doubly-fed induction generator(DFIG)based configuration is still preferred by wind turbine manufacturers due to the cost-effective power converter and independent control of the active power and reactive power.To cope with stricter grid codes(e.g.reactive power compensation,low voltage ride-through operation,as well as steady and safe operation during long-term distorted grid),control strategies are continuously evolving.This paper starts with a control strategy using the combined reactive power compensation from both the back-to-back power converters for their optimized lifetime distribution under normal grid conditions.Afterwards,an advanced demagnetizing control is proposed to keep the minimum thermal stress of the rotor-side converter in the case of the short-term grid fault.A modularized control strategy of the DFIG system under unbalanced and distorted grid voltage is discussed,with the control targets of the smooth active and reactive power or the balanced and sinusoidal current of the rotor-side converter and the grid-side converte。Finally,a bandwidth based repetitive controller is evaluated to improve the DFIG system's robustness against grid frequency deviation. | Dao Zhou Yipeng Song Frede Blaabjerg | 2016 | Chinese Journal of Electrical Engineering2016,2,1: | 2 |
| 11 | Improved Rotor Flux Observer for Sensorless Control of PMSM with Adaptive Harmonic Elimination and Phase Compensation显示文摘In this paper,a sensorless control strategy of a permanent magnet synchronous machine(PMSM)based on an improved rotor flux observer(IFO)is proposed.Due to the unknown integral initial value and the high harmonics caused by current sampling and inverter nonlinearities,the flux linkage estimated by traditional rotor flux observer may be inaccurate.In order to address these issues,a self-adaptive band-pass filter(SABPF)is designed to eliminate the DC component and high-frequency harmonics of the estimated equivalent rotor flux linkage.Furthermore,in order to avoid that the design of PI parameter is influenced by the amplitude of equivalent rotor flux linkage,an improved phase-locked loop(IPLL)is employed to obtain the rotor speed and to normalize the estimated equivalent rotor flux linkage.In addition,angle shift caused by an SABPF is compensated to improve the accuracy of the estimated flux linkage angle.Besides,the parameter robustness of this method is analyzed in detail.Finally,simulation and experimental results demonstrate the effectiveness and parameter robustness of the proposed method. | Wei Xu Lei Wang Yi Liu Frede Blaabjerg | 2019 | CES Transactions on Electrical Machines and Systems2019,3,2: | 2 |
| 12 | Resonance Active Damping and PCC Voltage Quality Improvement of DFIG System Connected to Parallel Compensated Grid显示文摘Under the connection to a weak grid,the Doubly Fed Induction Generator(DFIG)based wind power system has potential risk from two operational issues.The first issue is the High Frequency Resonance(HFR)mode due to the impedance interaction between the DFIG system and the weak grid.In order to ensure safe and reliable operation of the DFIG system,it is necessary to implement effective active damping strategies to mitigate the HFR.The second issue is low order voltage harmonic distortion at the Point of Common Coupling(PCC),where consequently the performance of other grid-connected devices may deteriorate.It could be advantageous that the DFIG system is able to improve the voltage quality at PCC by eliminating the low order harmonic components.In this paper,both of the above mentioned DFIG operational characters,i.e.,active damping of HFR and the improvement of voltage quality at PCC,will be achieved by implementing advanced control strategies in the Rotor Side Converter(RSC)and the Grid Side Converter(GSC)respectively.Simulations are provided to verify the proposed control strategies for DFIG system connected to a weak grid. | Yipeng Song Nian Heng Frede Blaabjerg | 2018 | Chinese Journal of Electrical Engineering2018,4,4: | 2 |
| 13 | Wind farm—A power source in future power systems显示文摘 | Z. Chen F. Blaabjerg | 2008 | Renewable and Sustainable Energy Reviews2008,,6: | 2 |
| 14 | Electric Vehicle Charging Management Based on Deep Reinforcement Learning显示文摘A time-variable time-of-use electricity price can be used to reduce the charging costs for electric vehicle(EV)owners.Considering the uncertainty of price fluctuation and the randomness of EV owner’s commuting behavior,we propose a deep reinforcement learning based method for the minimization of individual EV charging cost.The charging problem is first formulated as a Markov decision process(MDP),which has unknown transition probability.A modified long short-term memory(LSTM)neural network is used as the representation layer to extract temporal features from the electricity price signal.The deep deterministic policy gradient(DDPG)algorithm,which has continuous action spaces,is used to solve the MDP.The proposed method can automatically adjust the charging strategy according to electricity price to reduce the charging cost of the EV owner.Several other methods to solve the charging problem are also implemented and quantitatively compared with the proposed method which can reduce the charging cost up to 70.2%compared with other benchmark methods. | Sichen Li Weihao Hu Di Cao Tomislav Dragicevic Qi Huang Zhe Chen Frede Blaabjerg | 2022 | Journal of Modern Power Systems and Clean Energy2022,10,3: | 2 |
| 15 | Stability improvements of an LCL-filter based three-phase active rectifier显示文摘 | Liserre M Dell'Aquila A Blaabjerg F | 2002 | Proceedngs of PESC2002,,3: | 1 |
| 16 | Establishment of reference distributions and decision values for thyroid antibodies against thyroid peroxidase (TPOAb) , thyroglobulin (TgAb) and the thyrotropin receptor (TRAb) 显示文摘 | Jensen EA Petersen PH Blaabjerg O | 2006 | Clin Chem Lab Med2006,44,8: | 1 |
| 17 | Power electronics as efficient interface in dispersed power generation systems显示文摘 | Frede Blaabjerg Zhe Chen Soeren Baekhoej Kjaer | 2004 | IEEE Transactions on Power Electronics2004,19,5: | 1 |
| 18 | On the energy optimized control of standard and high-efficiency induction motors in CT and HVAC applications 显示文摘 | Blaabjerg F Pedersen J K | 1998 | IEEE Trans IA1998,34,4: | 1 |
| 19 | Instantaneous power compensation in three-phase systems by using p-q-r theory显示文摘 | Kim H Blaabjerg F | 2002 | IEEE Transactions on Power Electronics2002,17,5: | 1 |
| 20 | Design and control of an LCL-filter based three-phase active rectifier显示文摘 | Liserre M Blaabjerg F Hansen S | 2005 | IEEE Transac- tions on Industry Applications2005,41,5: | 1 |