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Teodorescu, Remus
Aalborg University
in Cooperation with on an Cooperation-Score of 37%
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Publications (7/7 displayed)
- 2024Computationally Efficient Machine-Learning-Based Online Battery State of Health Estimation
- 2017Short-Circuit Degradation of 10-kV 10-A SiC MOSFETcitations
- 2015Extensive EIS characterization of commercially available lithium polymer battery cell for performance modellingcitations
- 2014Reduction of DC-link Capacitor in Case of Cascade Multilevel Converters by means of Reactive Power Controlcitations
- 2014Diagnosis of Lithium-Ion Batteries State-of-Health based on Electrochemical Impedance Spectroscopy Techniquecitations
- 2014Diagnosis of Lithium-Ion Batteries State-of-Health based on Electrochemical Impedance Spectroscopy Techniquecitations
- 2012Modular Multilevel Converter Modelling, Control and Analysis under Grid Frequency Deviations
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document
Reduction of DC-link Capacitor in Case of Cascade Multilevel Converters by means of Reactive Power Control
Abstract
A method to selectively control the amount of dc link voltage ripple by processing desired reactive power by a DC/DC converter in isolated AC/DC or AC/DC/AC system is proposed. The concept can reduce the dc link capacitors used for balancing the input and output power and thereby limiting the voltage ripple.It allows the use of smaller dc link capacitor and hence a longer lifetime and at the same time high power density and low cost can be achieved.The isolated DC/DC converter is controlled to process the desired reactive power in addition to the active power. The control system to achieve this selective degree of compensation is proposed. Simulation results are also presented to support the idea.