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HVDC shunt tap based on series-input parallel-output DC-AC multi-module VSCs with DC voltages balancing
(
Institution of Engineering and Technology
, 2014 , Conference Paper)
Conventionally, tapping-off a small amount of power from an HVDC transmission line to a three-phase local network can be achieved using a DC-to-AC voltage source converter (VSC) followed by a step down transformer. In order ...
A Novel Converter Station Structure for Improving Multiterminal HVDC System Resiliency Against AC and DC Faults
(
Institute of Electrical and Electronics Engineers Inc.
, 2020 , Article)
In an effort to minimize the power disruption between a dc grid and ac grids that host power converters during ac and dc network faults, this paper proposes a novel converter station structure to improve ac and dc fault ...
Modular multilevel DC-DC converter with arm interchange concept
(
Institution of Engineering and Technology
, 2020 , Article)
Conventional modular multilevel converters (MMCs) are promising converters for high-voltage high-power applications. Unlike DC-AC conversion, DC-DC conversion of MMCs suffers from unbalanced capacitor voltages due to the ...
Modeling and Control of Single-Stage Quadratic-Boost Split Source Inverters
(
Institute of Electrical and Electronics Engineers Inc.
, 2022 , Article)
This paper aims to develop the recently introduced Spilt-Source Inverter (SSI) topology to improve its boosting characteristics. New SSI topologies with high voltage gain are introduced in this paper. The proposed converters ...
General Classification and Comprehensive Performance Assessment of Multi-Objective DC Voltage Control in Multi-Terminal HVDC Networks
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Institute of Electrical and Electronics Engineers Inc.
, 2021 , Article)
The recent massive global movement towards green energy in power systems has raised the efforts of integrating large-scale Renewable Energy Sources (RESs) through Multi-Terminal HVDC (MTDC) systems. The configuration of ...
A generalized approach for design of contingency versatile DC voltage droop control in multi-terminal HVDC networks
(
Elsevier Ltd
, 2021 , Article)
The non-deterministic nature of power fluctuations in renewable energy sources impose challenges to the design of DC voltage-droop controller in Multi-Terminal High-Voltage DC (MTDC) systems. Fixed droop control does not ...
Optimal power flow in multi-terminal HVDC networks with embedded high-power DC-DC converters for voltage matching and flexible DC transmission
(
Institution of Engineering and Technology
, 2020 , Article)
High-power DC-DC converters are integrated into multi-terminal high-voltage DC (MTDC) networks, typically for voltage matching or flexible DC transmission. This study addresses droop-controlled radial and mesh MTDC networks ...
Multi-terminal Hvdc system with offshore wind farms under anomalous conditions: Stability assessment
(
Institute of Electrical and Electronics Engineers Inc.
, 2021 , Article)
Droop control is widely adopted to control Multi-Terminal high-voltage Direct Current (MTDC) systems with offshore wind farms. During permanent faults, the faulty line should be isolated promptly to preserve a high reliability ...
A Matlab/Simulink-Based Average-Value Model of Multi-Terminal HVDC Network
(
Institute of Electrical and Electronics Engineers Inc.
, 2019 , Conference Paper)
Multi-terminal High-Voltage Direct Current (MTDC) networks are emerging as the promising technology in modern transmission systems for efficient and bulky renewable energy sources transfer over long distances. Nonetheless, ...
Impact of forced and unforced system parameter variations on network stability and system economics of radial MTDC networks
(
Elsevier Ltd
, 2020 , Article)
This paper focuses on investigating the impact of system parameters uncertainty on voltage droop-controlled Multi-Terminal High-Voltage DC (MTDC) networks. The voltage droop typically controls the power-sharing among the ...