Browsing by Subject "HVDC"
Now showing items 1-14 of 14
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A dual three-phase induction machine based flywheel storage system driven by modular multilevel converters for fault ride through in HVDC systems
( IEEE Computer Society , 2016 , Conference Paper)One of the main challenges of voltage source converter based high voltage direct current (VSC-HVDC) transmission systems is the AC faults at the grid side. This work introduces the integration of multiphase induction machine ... -
A Flywheel Energy Storage System for Fault Ride Through Support of Grid-Connected VSC HVDC-Based Offshore Wind Farms
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)Voltage source converter (VSC)-based high voltage DC (HVDC) transmission is considered the future of offshore power transmission. This paper aims at providing a reliable VSC-HVDC transmission system architecture between ... -
A grid-connected HVDC shunt tap based on series-input parallel-output DC-AC multi-module 2-level voltage source converters
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)Tapping-off a small amount of power from an HVDC transmission line to a three-phase local grid can be achieved by using shunt or series HVDC taps. This paper proposes a new grid-connected HVDC shunt tap. The proposed tap ... -
A non-communication based protection algorithm for multi-terminal HVDC grids
( Elsevier Ltd , 2017 , Article)This paper introduces a non-communication based protection algorithm for Multi-Terminal High Voltage Direct Current (MTHVDC) transmission lines. The algorithm relies on using electrical current data at one end for ... -
Design of Optimal Droop Control for Multi-Terminal High-Voltage Direct Current Systems During Line Outages
( Taylor and Francis Inc. , 2019 , Article)This article investigates the required modifications to droop control design for optimum operation of Multi-Terminal High-Voltage Direct Current (MTHVDC) systems during line and converter outages. A typical 6-bus MTHVDC ... -
Fault ride-through capability enhancement based on flywheel energy storage system for wind farms connected via VSC high voltage DC transmission
( Institution of Engineering and Technology , 2012 , Conference Paper)This paper proposes a recovery strategy for wind energy-fed voltage source converter high voltage DC transmission systems, capable of maintaining power balance between the AC and DC sides during different AC faults. This ... -
Generalized power transmission control of VSC-based multi-terminal HVDC systems for offshore wind farms integration
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)In this paper, a generalized power transmission control method is developed for voltage source converter (VSC)-based multi-terminal HVDC systems. The droop characteristics of the multi-terminal HVDC system are used to ... -
Half-bridge modular multilevel-based HVDC converters with external pre-charged capacitors for dc fault current suppression capability
( Institution of Engineering and Technology , 2016 , Conference Paper)Half-Bridge Modular Multilevel Converters (HB-MMCs) are defenseless against DC side faults. Different types of DC Circuit Breakers (DCCBs) assisted with arrester banks/damping resistors such as solid-state CBs and hybrid ... -
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 ... -
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 ... -
Minimum transmission power loss in multi-terminal HVDC systems: A general methodology for radial and mesh networks
( Elsevier B.V. , 2019 , Article)The significant increase of high-power renewable energy sources (e.g., off-shore wind energy systems) in the power networks, has introduced Multi-Terminal High-Voltage DC (MTDC) grids as a prominent approach for transmitting ... -
Modular multilevel structure of a high power dual active bridge DC transformer with stepped two-level output
( Institute of Electrical and Electronics Engineers Inc. , 2014 , Conference Paper)This paper addresses the issues of dc voltage matching and dc fault protection in potential super-grids. An approach for high power dc-dc conversion is proposed and analyzed. A front-to-front connection of modular-multilevel ... -
Power angle control of grid-connected capacitor-tapped multi-module voltage source converter
( Institute of Electrical and Electronics Engineers Inc. , 2018 , Conference Paper)HVDC transmission suits transmitting large amounts of renewable energy power over long distances with low transmission losses. The Capacitor-Tapped Multi-module Converter (CT-MC) can be employed effectively to integrate ... -
Robust multivariable control design for HVDC systems considering AC grid impedance uncertainties
( Elsevier , 2022 , Article)High-voltage direct current (HVDC) transmission system based on modular multilevel converter (MMC) technology is considered as an attractive solution for the interconnection of two AC grids to enhance the security of ...