Browsing by Subject "HVDC power transmission"
Now showing items 1-20 of 47
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A boost converter-based ringing circuit with high-voltage gain for unipolar pulse generation
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)High-Voltage pulse generators are commonly used in biotechnology, medicine, industrial applications, food processing and drinking water purification. The dc-dc boost converter has been used before in pulsed applications ... -
A Droop Control Design for Multiterminal HVDC of Offshore Wind Farms With Three-Wire Bipolar Transmission Lines
( IEEE , 2015 , Article)Converting existing ac transmission lines to an extended multiterminal three-wire bipolar HVDC system can be considered a cost-effective way to interconnect dispersed offshore wind farms to onshore ac grids instead of ... -
A Full-Bridge Submodule-Based Modular Unipolar/Bipolar High-Voltage Pulse Generator with Sequential Charging of Capacitors
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Article)Repetitive high pulsed electric field (PEF) is an effective method to kill microorganisms and bacteria in water treatment applications. The PEF can be generated by applying high-power electromagnetic pulse across the sample ... -
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 ... -
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 high voltage pulse-generator based on DC-to-DC converters and capacitor-diode voltage multipliers for water treatment applications
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Article)Pulsed electric field (PEF) can be used effectively in water treatment applications by passing infected water through two electrodes excited from a high voltage pulsed power supply which guarantees killing the harmful ... -
A hybrid switched inductor with flexible high voltage gain boost converter for DC micro-grid application
( John Wiley and Sons Inc , 2021 , Article)A hybrid switched inductor with flexible high voltage gain boost converter for 400 V DC microgrid application is presented in the paper. The three operating modes of the converter are controlled using three switches by ... -
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, ... -
A new protection scheme for HVDC converters against DC-side faults with current suppression capability
( Institute of Electrical and Electronics Engineers Inc. , 2014 , Article)Two-level voltage-source converters and half-bridge modular multilevel converters are among the most popular types of HVDC converters. One of their serious drawbacks is their vulnerable nature to dc-side faults, since the ... -
A nine-arm modular multilevel converter (9A-MMC) for six-phase medium voltage motor drives
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)Dual three-phase (asymmetrical six-phase) induction motors have received significant attention in high power medium voltage drive applications. Typically, two three-phase voltage source converters are needed to feed such ... -
A non-isolated quasi-Z-source-based high-gain DC-DC converter
( John Wiley and Sons Ltd , 2022 , Article)To overcome the problems associated with Z-source-based DC-DC converters, a quasi-Z-source (QZS)-based high-gain DC-DC boost converter with switched capacitors is proposed in this work. Z-source-based DC-DC converters have ... -
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 ... -
A Pulsewidth Modulation Technique for High-Voltage Gain Operation of Three-Phase Z-Source Inverters
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)Z-source inverter (ZSI) was recently proposed as a single-stage buck-boost dc-ac power conversion topology. It augments voltage boost capability to the typical voltage buck operation of the conventional voltage source ... -
A series flywheel architecture for power levelling and mitigation of DC voltage transients in multi-terminal HVDC grids
( Institution of Engineering and Technology , 2014 , Article)This study proposes a new architecture of flywheel energy storage system (FESS) which can be implemented at generating unit (GU) level (e.g. wind turbine) or scaled up for application in grid-side converter (GSC) stations ... -
An asymmetrical six-phase induction motor drive based on nine-arm Modular Multilevel Converter (9AMMC) with circulating current suppression
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)Asymmetrical six-phase (dual three-phase) induction motors have received significant attention in high power medium voltage drive applications. Normally, two three-phase voltage source converters are used to supply the ... -
Bidirectional buck-boost inverter-based HVDC transmission system with AC-side contribution blocking capability during DC-side faults
( Institute of Electrical and Electronics Engineers Inc. , 2014 , Article)Offshore wind energy is now seen as a key contributor for the future renewable energy mix. HVDC technology is among the chief technologies enabling widespread use of offshore wind. Thanks to their numerous advantages, ... -
Brushless doubly fed induction machine as a variable frequency transformer
( IEEE , 2012 , Conference Paper)Variable frequency transformer (VFT) has been recently used as an alternative to HVDC to control power flow between asynchronous networks. VFT consumes less reactive power than a back-to-back HVDC system, provides faster ... -
Comprehensive Review of KY Converter Topologies, Modulation and Control Approaches with their Applications
( Institute of Electrical and Electronics Engineers Inc. , 2022 , Article)In the current scenario, the challenging task of designing a DC-DC converter has high voltage gain and small output ripple waves, which researchers deal with in highly complicated Because of its topological and continuous ... -
Conceptual study of AC-powered switched non-polarized-capacitors based solid-state bipolar Marx pulse generator
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Article)The conventional unipolar Marx generator can be employed for bipolar pulsed electric field by adding a high-voltage H-bridge at the load side which necessitates stacked switches. Alternatively, bipolar Marx generator with ... -
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 ...