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Research Output 2000 2019

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Article
2019
Open Access
File
Power transmission
Wind power
Electric fault currents
Electric potential
Recovery
2 Citations (Scopus)
Open Access
File
Wind power
Diodes
Electric potential
Offshore wind farms
Power control

Energy efficient three-phase utility interactive residential microgrid with mode transfer capabilities at weak grid conditions

Kumar, S., Singh, B., Pal, B., Xu, L. & Al-Durra, A., 27 Aug 2019, In : IEEE Transactions on Industry Applications. 10 p.

Research output: Contribution to journalArticle

Open Access
File
Energy storage
Synchronization
Power quality
Controllers
Electric potential
Open Access
File
Offshore wind farms
Diodes
Power control
Voltage control
HVAC

High voltage ride through control of PMSG-based wind turbine generation system using supercapacitor

Liu, G., Hu, J., Tian, G., Xu, L. & Wang, S., 2 May 2019, In : Active and Passive Electronic Components. 2019, 9 p., 3489252.

Research output: Contribution to journalArticle

Open Access
File
Wind turbines
Energy storage
Electric potential
Reactive power
Simulators

Hybrid converter topologies for dc transmission systems

Adam, G. P., Alsokhiry, F., Abdelsalam, I., Fletcher, J., Xu, L. & Al-Turki, Y., 20 Mar 2019, In : IET Power Electronics. 12, 3, p. 607-619 13 p.

Research output: Contribution to journalArticle

Open Access
File
Topology
Electric potential
Capacitors
Switches
MATLAB
1 Citation (Scopus)

Leaky least logarithmic absolute difference based control algorithm and learning based InC MPPT technique for grid integrated PV system

Kumar, N., Singh, B., Panigrahi, B. K. & Xu, L., 8 Jan 2019, In : IEEE Transactions on Industrial Electronics. 66, 11, p. 9003-9012 10 p., 8605505.

Research output: Contribution to journalArticle

Open Access
File
Incident solar radiation
Harmonic distortion
Electric potential
Power quality
Solar energy
2018

Adjustable inertial response from the converter with adaptive droop control in DC grids

Wang, Y., Wang, C., Xu, L., Meng, J. & Hei, Y., 28 Mar 2018, In : IEEE Transactions on Smart Grid. 11 p.

Research output: Contribution to journalArticle

Open Access
File
Electric potential
Signal analysis
Synchronous generators
Energy storage
Capacitors
8 Citations (Scopus)

A nearest level PWM method for the MMC in DC distribution grids

Wang, Y., Hu, C., Ding, R., Xu, L., Fu, C. & Yang, E., 11 Jan 2018, In : IEEE Transactions on Power Electronics. 17 p.

Research output: Contribution to journalArticle

Open Access
File
Pulse width modulation
Modulation
Electric potential
Switching frequency
Fourier transforms
14 Citations (Scopus)

A reliable micro-grid with seamless transition between grid connected and islanded mode for residential community with enhanced power quality

Talapur, G. G., Suryawanshi, H. M., Xu, L. & Shitole, A. B., 21 Feb 2018, In : IEEE Transactions on Industry Applications. 10 p.

Research output: Contribution to journalArticle

Open Access
File
Power quality
Power control
Reactive power
Synchronization
Simulators
2 Citations (Scopus)

A transient voltage based DC fault line protection scheme for MMC based DC grid embedding DC breakers

Xiang, W., Zhan, J., Xu, L., Yang, S., Lin, W. & Wen, J., 8 Oct 2018, In : IEEE Transactions on Power Delivery. p. 1-12 12 p.

Research output: Contribution to journalArticle

Open Access
File
Poles
Electric circuit breakers
Electric potential
Overhead lines
Fault detection
1 Citation (Scopus)

Current error based compensations for VSC current control in weak grids for wind farm applications

Givaki, K., Chen, D. & Xu, L., 28 Mar 2018, In : IEEE Transactions on Sustainable Energy. 10 p.

Research output: Contribution to journalArticle

Open Access
File
Electric current control
Farms
Electric potential
System stability
Compensation and Redress

Enhanced AC voltage and frequency control of offshore MMC station for wind farm connection

Jing, Y., Li, R., Xu, L. & Wang, Y., 12 Jun 2018, (Accepted/In press) In : IET Renewable Power Generation.

Research output: Contribution to journalArticle

Open Access
File
Electric potential
Electric fault currents
Overcurrent protection
Offshore wind farms
Controllability
13 Citations (Scopus)

Enhanced independent pole control of hybrid MMC-HVDC system

Xiang, W., Ling, W., Xu, L. & Wen, J., 30 Apr 2018, In : IEEE Transactions on Power Delivery. 33, 2, p. 861-872 12 p.

Research output: Contribution to journalArticle

Open Access
File
Poles
Electric potential
Controllers
Modulation
Open Access
File
Electric fault currents
Wind power
Diodes
Fault detection
Wind turbines
Offshore wind farms
Diodes
Wind turbines
Electric fault currents
Electric potential
2017
5 Citations (Scopus)

Accelerated switching function model of hybrid MMCs for HVDC system simulation

Li, R., Xu, L. & Guo, D., 10 Aug 2017, In : IET Power Electronics. 12 p.

Research output: Contribution to journalArticle

Open Access
File
Switching functions
MATLAB
Capacitors
Networks (circuits)
Electric potential
11 Citations (Scopus)
Open Access
File
Offshore wind turbines
Phase locked loops
Diodes
Electric potential
Voltage control
16 Citations (Scopus)

Enhanced flat-topped modulation for MMC control in HVDC transmission systems

Li, R., Fletcher, J. E., Xu, L. & Williams, B. W., 1 Feb 2017, In : IEEE Transactions on Power Delivery. 32, 1, p. 152-161 10 p.

Research output: Contribution to journalArticle

Open Access
File
Modulation
Vector spaces
Electric fault currents
Electric grounding
Cooling systems
4 Citations (Scopus)
Open Access
File
Short circuit currents
Electric potential
Capacitors
Switching functions
Switching frequency
3 Citations (Scopus)

Improved use of wind turbine kinetic energy for system frequency support

Xu, G. & Xu, L., 28 Jun 2017, In : IET Renewable Power Generation. 11, 8, p. 1094-1100 7 p.

Research output: Contribution to journalArticle

Open Access
File
Kinetic energy
Wind turbines
Rotors
4 Citations (Scopus)
Open Access
File
Multitasking
Power control
Electric potential
Experiments
2016
27 Citations (Scopus)
Open Access
File
Electric fault currents
Electric circuit breakers
Electric current control
Electric potential
Poles

Active distribution power system with multi-terminal DC links

Chen, D., Xu, L. & Zhang, W., 23 Sep 2016, In : IET Renewable Power Generation. 19 p.

Research output: Contribution to journalArticle

Open Access
File
Restoration
Switches
Electric potential
8 Citations (Scopus)

Adaptive DC stabilizer with reduced DC fault current for active distribution power system application

Chen, D., Xu, L. & Yu, J., 19 May 2016, In : IEEE Transactions on Power Systems. 10 p.

Research output: Contribution to journalArticle

Open Access
File
Electric fault currents
Control systems
20 Citations (Scopus)

Analysis and control of modular multilevel converters under asymmetric arm impedance conditions

Zeng, R., Xu, L., Yao, L. & Finney, S. J., 31 Jan 2016, In : IEEE Transactions on Industrial Electronics. 63, 1, p. 71-81 11 p.

Research output: Contribution to journalArticle

Open Access
File
Equivalent circuits
Inductance
58 Citations (Scopus)
Open Access
File
Electric fault location
Fault detection
Electric potential
Immunization
Electric fault currents

Frequency support using multi-terminal HVDC systems based on DC voltage manipulation

Rafferty, J., Xu, L., Wang, Y., Xu, G. & Alsokhiry, F., 7 Jun 2016, (Accepted/In press) In : IET Renewable Power Generation. 18 p.

Research output: Contribution to journalArticle

Open Access
File
Offshore wind farms
Electric potential
Telecommunication
7 Citations (Scopus)

Hybrid MMC based multi-terminal DC/DC converter with minimized FBSMs ratio considering DC fault isolation

Suo, Z., Li, G., Xu, L., Li, R., Wang, W. & Chi, Y., 28 Jun 2016, In : IET Renewable Power Generation. 21 p.

Research output: Contribution to journalArticle

Open Access
File
DC-DC converters
Electric potential
Electric fault currents
Open Access
File
Electric circuit breakers
DC-DC converters
MATLAB
Switches
Costs

Submodule configuration of HVDC-DC auto transformer considering DC fault

Suo, Z., Li, G., Li, R., Xu, L., Wang, W., Chi, Y. & Sun, W., 22 Aug 2016, (Accepted/In press) In : IET Power Electronics. p. 1-24 24 p.

Research output: Contribution to journalArticle

Open Access
File
DC transformers
Topology
Semiconductor materials
Recovery
2015
50 Citations (Scopus)

A hybrid modular multilevel converter with novel three-level cells for DC fault blocking capability

Li, R., Fletcher, J. E., Xu, L., Holliday, D. & Williams, B. W., 1 Aug 2015, In : IEEE Transactions on Power Delivery. 30, 4, p. 2017-2026 10 p.

Research output: Contribution to journalArticle

Open Access
File
Semiconductor materials
Electric fault currents
Diodes
Clamping devices
Networks (circuits)
25 Citations (Scopus)

Analysis of voltage source converter-based high-voltage direct current under DC line-to-earth fault

Rafferty, J., Xu, L. & Morrow, J., Mar 2015, In : IET Power Electronics. 8, 3, p. 428–438 11 p.

Research output: Contribution to journalArticle

Open Access
File
Earth (planet)
Electric potential
Electric grounding
22 Citations (Scopus)

Considerations in design of an offshore network

Bell, K. R. W., Xu, L. & Houghton, T., Feb 2015, In : CIGRE Science and Engineering. 1, p. 79-92 14 p.

Research output: Contribution to journalArticle

Open Access
File
Electric power transmission networks
Electric circuit breakers
Fault detection
Economics
Costs
60 Citations (Scopus)

Continuous operation of radial multi-terminal HVDC systems under DC fault

Li, R., Xu, L., Holliday, D., Page, F., Finney, S. J. & Williams, B. W., 2015, In : IEEE Transactions on Power Delivery. 11 p.

Research output: Contribution to journalArticle

Open Access
File
Electric circuit breakers
Electric fault currents
Capacitors
Networks (circuits)
Electric potential
107 Citations (Scopus)

Control of PMSG-based wind turbines for system inertial response and power oscillation damping

Wang, Y., Meng, J., Zhang, X. & Xu, L., Apr 2015, In : IEEE Transactions on Sustainable Energy. 6, 2, p. 556-574 10 p.

Research output: Contribution to journalArticle

Open Access
File
Wind turbines
Damping
Controllers
Synchronous generators
Power control
28 Citations (Scopus)

Hybrid HVDC for integrating wind farms with special consideration on commutation failure

Zeng, R., Xu, L., Yao, L., Finney, S. J. & Wang, Y., 2015, In : IEEE Transactions on Power Delivery.

Research output: Contribution to journalArticle

Open Access
File
Electric commutation
Farms
Hybrid systems
Wind power
Topology
93 Citations (Scopus)

Pre-charging and DC fault ride-through of hybrid MMC based HVDC systems

Zeng, R., Xu, L., Yao, L. & Morrow, D. J., 2015, In : IEEE Transactions on Power Delivery. 9 p.

Research output: Contribution to journalArticle

Open Access
File
Electric potential
Bridge circuits
Telecommunication links
Capacitors
Modulation
2014
200 Citations (Scopus)

Design and operation of a hybrid modular multilevel converter

Zeng, R., Xu, L., Yao, L. & Williams, B. W., 14 Oct 2014, In : IEEE Transactions on Power Electronics. 30, 3, p. 1137-1146 10 p., 6807785.

Research output: Contribution to journalArticle

Open Access
File
Electric potential
Capacitors
Power transmission
Sorting
Equivalent circuits
19 Citations (Scopus)

Key technologies of VSC-HVDC and its application on offshore wind farm in China

Wu, J., Wang, Z., Xu, L. & Wang, G., Aug 2014, In : Renewable and Sustainable Energy Reviews . 36, p. 247-255 9 p.

Research output: Contribution to journalArticle

Offshore wind farms
Wind power
Electric potential
Wind turbines
Power quality
2013
160 Citations (Scopus)

DC voltage variation based autonomous control of DC microgrids

Chen, D., Xu, L. & Yao, L., 2013, In : IEEE Transactions on Power Delivery. 28, 2, p. 637-648 10 p.

Research output: Contribution to journalArticle

Energy storage
Level control
Electric potential
Wind turbines
Control systems
92 Citations (Scopus)

Improvement of the Hilbert method via ESPRIT for detecting rotor fault in induction motors at low slip

Xu, B., Sun, L., Xu, L. & Xu, G., Mar 2013, In : IEEE Transactions on Energy Conversion . 28, 1, p. 225-233

Research output: Contribution to journalArticle

Invariance
Induction motors
Rotors
Fast Fourier transforms
24 Citations (Scopus)

Power oscillation damping using wind turbines with energy storage systems

Xu, G., Xu, L. & Morrow, D. J., 26 Aug 2013, In : IET Renewable Power Generation. 7, 5, p. 449-457 9 p.

Research output: Contribution to journalArticle

Wind turbines
Energy storage
Damping
DC-DC converters
Reactive power
59 Citations (Scopus)

Sliding-mode control of a DFIG-based wind turbine under non-ideal grid voltages

Martinez, M. I., Susperregui, A., Tapia, G. & Xu, L., Jul 2013, In : IET Renewable Power Generation. 7, 4, p. 370-379 10 p.

Research output: Contribution to journalArticle

Asynchronous generators
Sliding mode control
Wind turbines
Rotors
Electric potential
2012
28 Citations (Scopus)

An ESPRIT-SAA-based detection method for broken rotor bar fault in induction motors

Xu, B., Sun, L., Xu, L. & Xu, G., Sep 2012, In : IEEE Transactions on Energy Conversion . 27, 3, p. 654-660 7 p.

Research output: Contribution to journalArticle

Invariance
Simulated annealing
Induction motors
Rotors
Time measurement
190 Citations (Scopus)

Autonomous DC voltage control of a DC microgrid with multiple slack terminals

Chen, D. & Xu, L., Nov 2012, In : IEEE Transactions on Power Systems. 27, 4, p. 1897-1905 9 p.

Research output: Contribution to journalArticle

Voltage control
Electric potential
Energy storage
Control systems
25 Citations (Scopus)

Coordinated DC voltage control of wind turbine with embedded energy storage system

Xu, G., Xu, L., Morrow, J. & Chen, D., 2012, In : IEEE Transactions on Energy Conversion . 27, 4, p. 1036-1045 10 p.

Research output: Contribution to journalArticle

Voltage control
Wind turbines
Energy storage
Controllers
Low pass filters
2011
331 Citations (Scopus)

Control and operation of a DC microgrid with variable generation and energy storage

Xu, L. & Chen, D., Oct 2011, In : IEEE Transactions on Power Delivery. 26, 4, p. 2513-2522 10 p.

Research output: Contribution to journalArticle

Wind turbines
Energy storage
Wind power
Power generation
Control systems
167 Citations (Scopus)
Offshore wind farms
Voltage control
Electric potential
873 Citations (Scopus)

Reduced switching-frequency modulation and circulating current suppression for modular multilevel converters

Tu, Q., Xu, Z. & Xu, L., Jul 2011, In : IEEE Transactions on Power Delivery. 26, 3, p. 2009-2017 9 p.

Research output: Contribution to journalArticle

Frequency modulation
Switching frequency
Controllers
Electric potential
Modulation