تصفح حسب المؤلف "Holliday, D."
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A single-stage three-phase DC/AC inverter based on Cuk converter for PV application
Darwish, A.; Elserougi, A.; Abdel-Khalik, A. S.; Ahmed, S.; Massoud, Ahmed; Holliday, D.; Williams, B. W.... more authors ... less authors ( IEEE , 2013 , Conference Paper)This paper presents a new three-phase dc-ac inverter based on the basic Cuk converter. The main feature of the proposed topology is the fact that the energy storage elements as inductors and capacitors values can be reduced ... -
A single-stage three-phase inverter based on cuk converters for PV applications
Darwish, A.; Holliday, D.; Ahmed, S.; Massoud, Ahmed; Williams, B. W. ( Institute of Electrical and Electronics Engineers Inc. , 2014 , Conference Paper)This paper presents a new three-phase inverter based on the Cuk converter. The main feature of the proposed topology is that the energy storage elements, such as inductors and capacitors, can be reduced in order to improve ... -
An active damping approach for PR-based current control of grid-tied VSI with LCL filter
Azani, H.; Massoud, A.; Benbrahim, L.; Williams, B. W.; Holliday, D. ( Institution of Engineering and Technology , 2016 , Conference Paper)The use of the Voltage Source Inverter (VSI) in Distributed Power Generation Systems (DPGS) and their connection to the utility network requires low pass filters which are typically used for grid current harmonic suppression. ... -
An active-damped LLCL filter for grid-tied three-phase voltage source inverter with PR current control
Azani, H.; Massoud, A.; Benbrahim, L.; Williams, B. W.; Holliday, D. ( Institution of Engineering and Technology , 2016 , Conference Paper)For the grid connection of voltage source inverters (VSIs), the power passive filters are a standard solution for grid-current harmonic attenuation. However, these types of filters may cause resonance between the inverter ... -
Analysis and Assessment of Modular Multilevel Converter Internal Control Schemes
Wang, S.; Adam, G.P.; Massoud, Ahmed; Holliday, D.; Williams, B. W. ( Institute of Electrical and Electronics Engineers Inc. , 2020 , Article)Adoption of distributed submodule (SM) capacitors in a modular multilevel converter (MMC) necessitates complex controllers to ensure the stability of its internal dynamics. This paper presents comprehensive analysis and ... -
Low-voltage DC input, high-voltage pulse generator using nano-crystalline transformer and sequentially charged MMC sub-modules, for water treatment applications
Elgenedy, M. A.; Massoud, A. M.; Holliday, D.; Ahmed, Shehab; Williams, B ( Institute of Electrical and Electronics Engineers Inc. , 2017 , Conference Paper)This paper proposes a new high-voltage Pulse Generator (PG), fed from low voltage dc supply Vs. This input supply voltage is utilized to charge two arms of series-connected modular multilevel converter sub-module capacitors ... -
Modular multilevel structure of a high power dual active bridge DC transformer with stepped two-level output
Gowaid, I.A.; Adam, G.P.; Massoud, Ahmed; Ahmed, S.; Holliday, D.; Williams, B.W.... more authors ... less authors ( 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 ... -
Multiloop control strategy for grid-interfaced three-phase voltage source inverter with passively damped LLCL-filter
Azani, H.; Massoud, Ahmed; Ben-Brahim, L.; Williams, B.W.; Holliday, D. ( Institution of Engineering and Technology , 2014 , Conference Paper)In inverter-based distributed generation (IBDG) and similar to the conventional third order LCL filter, the high order LLCL filter is difficult to stabilize, and may cause a resonance between the inverter and the grid. ... -
Performance assessment of L-2LC-L filter (double LC trap)-based grid-connected three-phase voltage source inverter
Azani, H.; Massoud, A.; Ben-Brahim, L.; Williams, B. W.; Holliday, D. ( IEEE , 2018 , Conference Paper)Inverter-Based Distributed Generation (IBDG) units are typically coupled to the grid via three-phase Voltage Source Converters (VSCs). The IBDGs may pollute utility with the injected harmonic currents. In order to meet the ... -
Quasi two-level operation of modular multilevel converter for use in a high-power DC transformer with DC fault isolation capability
Gowaid, I. A.; Adam, G. P.; Massoud, Ahmed; Ahmed, S.; Holliday, D.; Williams, B. W.... more authors ... less authors ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Article)DC fault protection is one challenge impeding the development of multiterminal dc grids. The absence of manufacturing and operational standards has led to many point-to-point HVDC links built at different voltage levels, ... -
Stability analysis of an active-damped LLCL filter- based grid-connected three-phase inverter
Massoud, A.; Ben-Brahim, L.; Hamid, A.; Williams, B.W.; Holliday, D. ( IEEE , 2014 , Conference Paper)Power passive filters are a standard solution for gridcurrent harmonics attenuation. However, these types of filters may cause a resonance between the inverter and the grid. Passive and active damping techniques are employed ... -
Strategies for Decoupling Internal and External Dynamics Resulting from Inter-Arm Passive Component Tolerances in HVDC-MMC
Wang S.; Adam G.; Massoud A.; Holliday D.; Williams B. ( Institute of Electrical and Electronics Engineers Inc. , 2019 , Conference Paper)Modular Multilevel Converter (MMC) performance may be adversely affected by passive component tolerances, such as submodule capacitance and arm inductance variations. Depending on control strategies, the differences in ...