Search Results - "Ängquist, Lennart"

Modular Multilevel Converter AC Motor Drives With Constant Torque From Zero to Nominal Speed by Antonopoulos, Antonios, Angquist, Lennart, Norrga, Staffan, Ilves, Kalle, Harnefors, Lennart, Nee, Hans-Peter

“…Modular multilevel converters are shown to have a great potential in the area of medium-voltage drives. Low-distortion output quantities combined with low…”
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Dynamic Analysis of Modular Multilevel Converters by Harnefors, L., Antonopoulos, A., Norrga, S., Angquist, L., Nee, H-P

“…Theory for the dynamics of modular multilevel converters is developed in this paper. It is shown that the sum capacitor voltage in each arm often can be…”
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Efficient Modeling of an MMC-Based Multiterminal DC System Employing Hybrid HVDC Breakers by Ahmed, Noman, Angquist, Lennart, Mahmood, Shahid, Antonopoulos, Antonios, Harnefors, Lennart, Norrga, Staffan, Nee, Hans-Peter

“…The feasibility of future multiterminal dc (MTDC) systems depends largely on the capability to withstand dc-side faults. Simulation models of MTDC systems play…”
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Global Asymptotic Stability of Modular Multilevel Converters by Antonopoulos, Antonios, Angquist, Lennart, Harnefors, Lennart, Ilves, Kalle, Nee, Hans-Peter

“…Modular multilevel converters require that the controller is designed so that the submodule capacitor voltages are equalized and stable, independent of the…”
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Modeling, Experimental Validation, and Application of VARC HVDC Circuit Breakers by Liu, Siyuan, Popov, Marjan, Mirhosseini, Seyed Sattar, Nee, Simon, Modeer, Tomas, Angquist, Lennart, Belda, Nadew, Koreman, Kees, van der Meijden, Mart A. M. M.

“…This paper deals with the modeling, hardware results and model validation by measurements of a VSC assisted resonant current (VARC) dc circuit breaker (CB) and…”
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High-Power Modular Multilevel Converters With SiC JFETs by Peftitsis, D., Tolstoy, G., Antonopoulos, A., Rabkowski, J., Jang-Kwon Lim, Bakowski, M., Ängquist, Lennart, Nee, H.

“…This paper studies the possibility of building a modular multilevel converter (M2C) using silicon carbide (SiC) switches. The main focus is on a theoretical…”
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Optimal Selection of the Average Capacitor Voltage for Variable-Speed Drives With Modular Multilevel Converters by Antonopoulos, Antonios, Angquist, Lennart, Harnefors, Lennart, Nee, Hans-Peter

“…Variable-speed drives have reduced voltage requirements when operating below the base speed. In a modular-multilevel-converter-based (M2C-based) motor drive,…”
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A Computationally Efficient Continuous Model for the Modular Multilevel Converter by Ahmed, Noman, Angquist, Lennart, Norrga, Staffan, Antonopoulos, Antonios, Harnefors, Lennart, Nee, Hans-Peter

“…Simulation models of the modular multilevel converter (MMC) play a very important role for studying the dynamic performance. Detailed modeling of the MMC in…”
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A Comparison of Different Frequency Scanning Methods for Study of Subsynchronous Resonance by Johansson, N, Ängquist, L, Nee, Hans-Peter

“…This paper compares four different methods for determining the electrical damping of a power system seen from one generator as a function of frequency. This…”
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Modular Multilevel Converters Overvoltage Diagnosis and Remedial Strategy During Blocking Sequences by Gregoire, Luc-Andre, Blanchette, Handy Fortin, Wei Li, Antonopoulos, Antonios, Angquist, Lennart, Al-Haddad, Kamal

“…In this paper, the authors first highlight an existing overvoltage phenomenon that is inherent to the modular multilevel converter (MMC) topology. The latter…”
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On Control of Static Synchronous Series Compensator for SSR Mitigation by Bongiorno, M., Svensson, J., Angquist, L.

“…This paper deals with the analysis and simulation of the static series compensator (SSSC) for subsynchronous resonance (SSR) mitigation. The purpose of the…”
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An Adaptive Controller for Power System Stability Improvement and Power Flow Control by Means of a Thyristor Switched Series Capacitor (TSSC) by Johansson, N., Angquist, L., Nee, H.-P.

“…In this paper, a controller for a thyristor switched series capacitor (TSSC) is presented. The controller aims to stabilize the power system by damping…”
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Evaluation of different carrier-based PWM methods for modular multilevel converters for HVDC application by Hassanpoor, A., Norrga, S., Nee, H., Angquist, L.

“…The outstanding features of modular multilevel converters (M2C) make it attractive for high voltage direct current (HVDC) systems. In order to achieve high…”
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Experimental results from a Thomson-coil actuator for a vacuum interrupter in an HVDC breaker by Baudoin, Antoine, Hátsági, Bence, Álvarez, Miguel, Ängquist, Lennart, Nee, Simon, Norrga, Staffan, Modeer, Tomas

“…Recent developments in high-voltage direct current transmission technology and the plans for multi-terminals motivate research efforts on the fast DC breaker…”
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Single-Phase VSC Based SSSC for Subsynchronous Resonance Damping by Bongiorno, M., Svensson, J., Angquist, L.

“…In this paper, a novel control strategy for subsynchronous resonance (SSR) mitigation using a static synchronous series compensator (SSSC) will be presented…”
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Design Study of a Converter Interface Interconnecting Energy Storage With the DC Link of a StatCom by Hailian Xie, Angquist, L., Nee, Hans-Peter

“…Voltage-source converters (VSC) have been widely utilized to provide instantaneous reactive power support to power systems, an application referred to as…”
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A Novel Control Strategy for Subsynchronous Resonance Mitigation Using SSSC by Bongiorno, M., Angquist, L., Svensson, J.

“…In this paper, a novel control strategy for subsynchronous resonance (SSR) mitigation using a static synchronous series compensator will be presented. SSR…”
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An Adaptive Controller for Power System Stability Improvement and Power Flow Control by Means of a Thyristor Switched Series Capacitor (TSSC) (vol 25, pg 381, 2010) by Johansson, Nicklas, Ängquist, Lennart, Nee, Hans-Peter

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Capacitor voltage ripple shaping in modular multilevel converters allowing for operating region extension by Ilves, Kalle, Antonopoulos, A., Harnefors, L., Norrga, S., Angquist, L., Nee, H-P

“…The second-order harmonic in the circulating current of a modular multilevel converter (M2C) influences the capacitor voltage ripple. If no measures are taken…”
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Preliminary Design of Power Controller Devices Using the Power-Flow Control and the Ideal Phase-Shifter Methods by Johansson, N., Angquist, L., Nee, H-P

“…This paper introduces a new method for the preliminary design of power controllers (PCs) in the electric power grid. The method, which is denoted the ideal…”
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