Search Results - "Harnefors, Lennart"

VSC Input-Admittance Modeling and Analysis Above the Nyquist Frequency for Passivity-Based Stability Assessment by Harnefors, Lennart, Finger, Raphael, Xiongfei Wang, Haofeng Bai, Blaabjerg, Frede

“…The interconnection stability of a grid-connected voltage-source converter can be assessed via the dissipative properties of its input admittance. In this…”
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Power-Synchronization Control of Grid-Connected Voltage-Source Converters by Lidong Zhang, Harnefors, Lennart, Nee, Hans-Peter

“…In this paper, a novel control method of grid-connected voltage-source converters (VSCs) is proposed. The method can be generally applied for all…”
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Passivity-Based Controller Design of Grid-Connected VSCs for Prevention of Electrical Resonance Instability by Harnefors, Lennart, Yepes, Alejandro G., Vidal, Ana, Doval-Gandoy, Jesus

“…The time delay in the current control loop of a grid-connected voltage-source converter (VSC) may cause destabilization of electrical resonances in the grid or…”
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Grid-Synchronization Stability of Converter-Based Resources-An Overview by Wang, Xiongfei, Taul, Mads Graungaard, Wu, Heng, Liao, Yicheng, Blaabjerg, Frede, Harnefors, Lennart

“…This paper presents an overview of the synchronization stability of converter-based resources under a wide range of grid conditions. The general…”
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Offshore Wind Integration to a Weak Grid by VSC-HVDC Links Using Power-Synchronization Control: A Case Study by Mitra, Pinaki, Lidong Zhang, Harnefors, Lennart

“…In this paper, the application of a recently invented power-synchronization control is proposed for integrating a doubly fed induction generator (DFIG)-based…”
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A Method for the Calculation of the AC-Side Admittance of a Modular Multilevel Converter by Bessegato, Luca, Harnefors, Lennart, Ilves, Kalle, Norrga, Staffan

“…Connecting a modular multilevel converter to an ac grid may cause stability issues, which can be assessed by analyzing the converter ac-side admittance in…”
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Input-Admittance Calculation and Shaping for Controlled Voltage-Source Converters by Harnefors, L., Bongiorno, M., Lundberg, S.

“…A controlled power electronic converter can cause local instabilities when interacting with other dynamic subsystems in a power system. Oscillations at a…”
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Predictive Sorting Algorithm for Modular Multilevel Converters Minimizing the Spread in the Submodule Capacitor Voltages by Ilves, Kalle, Harnefors, Lennart, Norrga, Staffan, Nee, Hans-Peter

“…The balancing of the capacitor voltages in modular multilevel converters becomes increasingly difficult when the switching frequency is reduced. Typically, a…”
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Closed-Form Solutions for Grid-Forming Converters: A Design-Oriented Study by Zhao, Fangzhou, Zhu, Tianhua, Harnefors, Lennart, Fan, Bo, Wu, Heng, Zhou, Zichao, Sun, Yin, Wang, Xiongfei

“…This paper derives closed-form solutions for grid-forming converters with power synchronization control (PSC) by subtly simplifying and factorizing the complex…”
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Unified Impedance Model of Grid-Connected Voltage-Source Converters by Xiongfei Wang, Harnefors, Lennart, Blaabjerg, Frede

“…This paper proposes a unified impedance model of grid-connected voltage-source converters for analyzing dynamic influences of the phase-locked loop (PLL) and…”
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Rethinking Current Controller Design for PLL-Synchronized VSCs in Weak Grids by Gong, Hong, Wang, Xiongfei, Harnefors, Lennart

“…This article revisits the design of the current controller for grid-connected voltage-source converters (VSCs), considering the dynamic impacts of the…”
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Design Framework for Sensorless Control of Synchronous Machine Drives by Tiitinen, Lauri, Hinkkanen, Marko, Harnefors, Lennart

“…This article develops a design framework for sensorless flux-vector control of synchronous machine drives. Observer-based volts-per-hertz (V/Hz) control is…”
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Proof and Application of the Positive-Net-Damping Stability Criterion by Harnefors, L

“…This letter presents proof of the positive-net-damping stability criterion for analysis of subsynchronous torsional interaction. It is also shown how to apply…”
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Modeling of Three-Phase Dynamic Systems Using Complex Transfer Functions and Transfer Matrices by Harnefors, L.

“…A compilation of methods for modeling and analysis of three-phase dynamic systems-such as AC machines, resistance-inductance-capacitance components, and power…”
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Accuracy Analysis of the Zero-Order Hold Model for Digital Pulse Width Modulation by Ma, Junpeng, Wang, Xiongfei, Blaabjerg, Frede, Harnefors, Lennart, Song, Wensheng

“…This paper analyzes the accuracy of the zero-order hold (ZOH) model for the digital pulse width modulator (DPWM) in the s- domain. The s- domain model and the…”
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Passivity-Based Stability Assessment of Grid-Connected VSCs-An Overview by Harnefors, Lennart, Xiongfei Wang, Yepes, Alejandro G., Blaabjerg, Frede

“…The interconnection stability of a grid-connected voltage-source converter (VSC) can be assessed by the passivity properties of the VSC input admittance. If…”
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Stabilization Methods for Sensorless Induction Motor Drives-A Survey by Harnefors, Lennart, Hinkkanen, Marko

“…The challenges of achieving stability and good damping of a sensorless induction motor drive are much greater than for a sensored drive. In this paper, some…”
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Effects of Control on the AC-Side Admittance of a Modular Multilevel Converter by Bessegato, Luca, Ilves, Kalle, Harnefors, Lennart, Norrga, Staffan

“…The stability of a modular multilevel converter connected to an ac grid can be assessed by analyzing the converter ac-side admittance in relation to the grid…”
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A Universal Controller for Grid-Connected Voltage-Source Converters by Harnefors, Lennart, Kukkola, Jarno, Routimo, Mikko, Hinkkanen, Marko, Wang, Xiongfei

“…The power-synchronization control (PSC) and vector current control (VCC), the latter including cascaded outer loops, are, respectively, considered to be…”
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Robust Analytic Design of Power-Synchronization Control by Harnefors, Lennart, Hinkkanen, Marko, Riaz, Usama, Rahman, F. M. Mahafugur, Zhang, Lidong

“…This paper addresses robust design of the active-power and dc-link control loops of power-synchronization control. Robustness is obtained by analytic gain…”
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