Works (20)

Updated: April 5th, 2024 10:49

2023 journal article

Asymmetrical Fault Ride-Through and Power Oscillation Characterization for Grid-Tied Voltage Source Converters

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 59(4), 4550–4561.

By: M. Rachi*, M. Awal* & I. Husain n

author keywords: Distributed energy resources; fault ride-through; grid-tied voltage source converter; power oscillation; symmetrical and asymmetrical fault
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 21, 2023

2023 journal article

Double Synchronous Unified Virtual Oscillator Control for Asymmetrical Fault Ride-Through in Grid-Forming Voltage Source Converters

IEEE TRANSACTIONS ON POWER ELECTRONICS, 38(6), 6759–6763.

By: M. Awal n, M. Rachi n, H. Yu n, I. Husain n & S. Lukic n

author keywords: Oscillators; Synchronization; Voltage control; Phase locked loops; Control systems; Frequency synchronization; Switches; Asymmetrical fault ride-through; fault-ride-through (FRT); grid-forming (GFM) converter; unified virtual oscillator controller (UVOC)
TL;DR: A double synchronous unified virtual oscillator controller (dsUVOC) is proposed for grid-forming voltage source converters to achieve synchronization to the fundamental frequency positive- and negative-sequence components of unbalanced or distorted grids. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: December 9, 2022

2023 article

Grid-Forming Nature Retaining Fault Ride-Through Control

2023 IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION, APEC, pp. 2753–2758.

By: M. Awal*, M. Rachi n, H. Yu*, S. Schroeder, J. Dannehl* & I. Husain n

author keywords: Grid-forming control; GFM; fault ride-through; FRT; current constrained operation; current limiting control
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: September 5, 2023

2023 article

Medium Voltage Solid State Transformer for Extreme Fast Charging Applications

2023 IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION, APEC, pp. 1528–1535.

By: M. Awal n, O. Montes n, F. Teng n, D. Wang n, M. Bipu n, W. Yu n, S. Lukic n, I. Husain n

author keywords: XFC; SST; cascaded H-bridge; DAB; extreme fast charging; EV charging; DC ultra-fast charging
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: September 5, 2023

2022 journal article

Observer Based Generalized Active Damping for Voltage Source Converters With LCL Filters

IEEE TRANSACTIONS ON POWER ELECTRONICS, 37(1), 125–136.

By: M. Awal n, L. Della Flora* & I. Husain n

author keywords: Observers; Damping; Frequency control; Resonant frequency; Voltage control; Frequency measurement; Current measurement; Active damping (AD) for virtual oscillator control (VOC); AD; AD for unified virtual oscillator control (uVOC); current control; LCL filter; observer-based AD; passive admittance; passivity
TL;DR: The proposed observer-based active damping (AD) controller thus overcomes a major limitation of VOC which otherwise offers robust synchronization in reduced/zero-inertia networks and enhanced fault ride-through capability. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Source: Web Of Science
Added: October 4, 2021

2022 journal article

Passive Capacitor Voltage Balancing of SiC-Based Three-Level Dual-Active-Bridge Converter Using Hybrid NPC-Flying Capacitor Structure

IEEE TRANSACTIONS ON POWER ELECTRONICS, 37(4), 4183–4194.

By: H. Feng*, F. Teng n, O. Montes n, M. Awal*, M. Bipu n, I. Husain n, S. Lukic n

author keywords: Capacitors; Voltage; Topology; Modulation; Voltage control; Switches; Bridge circuits; Dual-active-bridge (DAB) converter; flying capacitor (FC); medium-voltage (MV) converter; neutral-point-clamped (NPC) topology; voltage balancing
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: January 10, 2022

2021 article

Adaptive Pre-Synchronization and Discrete-Time Implementation for Unified Virtual Oscillator Control1

2021 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE), pp. 3418–3424.

By: M. Awal n, M. Rachi n, M. Bipu n, H. Yu n & I. Husain n

author keywords: pre-synchronization; unified virtual oscillator control; uVOC; grid-forming converter; terminal voltage compensation
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: July 5, 2022

2021 article

Circulating Reactive Power and Suppression Strategies in DC Power Electronics Networks

2021 THIRTY-SIXTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2021), pp. 796–803.

By: M. Awal n, H. Tu n, B. Xu n, S. Lukic n & I. Husain n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: September 20, 2021

2021 journal article

Comparative Transient Stability Assessment of Droop and Dispatchable Virtual Oscillator Controlled Grid-Connected Inverters

IEEE TRANSACTIONS ON POWER ELECTRONICS, 36(2), 2119–2130.

By: H. Yu n, M. Awal n, H. Tu n, I. Husain n & S. Lukic n

author keywords: Transient analysis; Inverters; Power system stability; Oscillators; Stability criteria; Dispatchable virtual oscillator control (dVOC); droop control; grid forming; phase portrait; transient stability; vector field on the circle
TL;DR: This article proposes a concise and straightforward graphical approach to assess transient stability of dVOC using vector field on the circle and a complete large-signal model is derived and the impact ofdVOC voltage amplitude dynamics is analyzed. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, ORCID
Added: February 8, 2021

2021 journal article

FPGA-Based High-Bandwidth Motor Emulator for Interior Permanent Magnet Machine Utilizing SiC Power Converter

IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS, 9(4), 4340–4353.

By: Y. Luo n, M. Awal n, W. Yu n & I. Husain n

author keywords: Traction motors; Bandwidth; Inverters; Switches; Logic gates; Reluctance motors; Field programmable gate arrays; Inverter testing; interior permanent magnet (IPM); power-hardware-in-the-loop (PHIL); traction drive
TL;DR: A high-bandwidth (>20 kHz) motor emulator (ME) prototype for ac machines, utilizing field programmable gate array (FPGA)-based hybrid model predictive control and a high fidelity motor model and implemented with a voltage source power converter, and fast-switching SiC devices, is presented in this article. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 23, 2021

2021 article

Secondary Voltage and Frequency Regulation for Grid Re-Synchronization in Microgrid with Unified Virtual Oscillator Controlled Multi-port Converters

2021 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE), pp. 900–905.

By: M. Bipu, M. Awal*, S. Cen*, S. Zabin, M. Khan*, D. Lubkeman*, I. Husain*

author keywords: grid-forming converter; multi-port converter; hybrid AC-DC microgrid; secondary regulation; unified virtual oscillator control
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: July 5, 2022

2021 journal article

Transient Stability Assessment for Current-Constrained and Current-Unconstrained Fault Ride Through in Virtual Oscillator-Controlled Converters

IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS, 9(6), 6935–6946.

By: M. Awal n & I. Husain n

author keywords: Power system stability; Transient analysis; Oscillators; Synchronization; Impedance; Voltage control; Stability criteria; Critical clearing angle (CCA); current saturation; fault ride through (FRT); grid-forming (GFM) converter; transient stability; unified virtual oscillator control (uVOC); virtual oscillator control (VOC)
TL;DR: A comprehensive modeling and analysis method for transient stability in uVOC-based converters is developed under both current-saturated and current-unsaturated symmetrical ac faults and is utilizing a phase-plane analysis of the overall system in a single graphical representation to obtain holistic insights into the coupled voltage and power-angle dynamics. (via Semantic Scholar)
Source: Web Of Science
Added: December 20, 2021

2021 journal article

Unified Virtual Oscillator Control for Grid-Forming and Grid-Following Converters

IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS, 9(4), 4573–4586.

By: M. Awal n & I. Husain n

author keywords: Oscillators; Synchronization; Voltage control; Phase locked loops; Switches; Converters; Fault ride-through; grid-following (GFL) converter; grid-forming (GFM) converter; oscillator-based control; unified virtual oscillator control; unified virtual oscillator controller (uVOC); weak grid
TL;DR: A unified virtual oscillator controller (uVOC) is proposed, which enables a unified analysis, design, and implementation framework for both grid-forming (GFM) and grid-following (GFL) voltage-source converters (VSCs). (via Semantic Scholar)
Source: Web Of Science
Added: August 16, 2021

2021 article

Unified Virtual Oscillator Control for Synchronization Under Ultra-Weak Grid Conditions

2021 THIRTY-SIXTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2021), pp. 105–110.

By: M. Awal n & I. Husain n

TL;DR: Through analysis, it is demonstrated that the proposed controller retains synchronization as long as a feasible equilibrium exists, and using dynamic reactive power control the feasible power-flow range is extended under ultra-weak grid conditions. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Source: Web Of Science
Added: September 20, 2021

2020 journal article

Capacitor Voltage Balancing for Neutral Point Clamped Dual Active Bridge Converters

IEEE TRANSACTIONS ON POWER ELECTRONICS, 35(10), 11267–11276.

By: M. Awal n, M. Bipu n, O. Montes n, H. Feng n, I. Husain n, W. Yu n, S. Lukic n

author keywords: Capacitors; Switches; Bridge circuits; Voltage control; Topology; Voltage measurement; Legged locomotion; Capacitor voltage balancing; dual active bridge (DAB); neutral point diode clamped (NPC); neutral point balancing
TL;DR: A voltage balancing controller, which is independent of power flow direction and does not require adjustments of active voltage vectors through the modulator, is proposed and demonstrated through analysis, simulation, and hardware experiments using a laboratory prototype. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: July 20, 2020

2020 journal article

Droop and Oscillator Based Grid-Forming Converter Controls: A Comparative Performance Analysis

FRONTIERS IN ENERGY RESEARCH, 8.

By: M. Awal n, H. Yu n, S. Lukic n & I. Husain n

author keywords: droop controls; oscillator controls; grid forming converters; harmonic compensation; transient stability; virtual oscillator control; VOC; dVOC
TL;DR: This paper analyzes both the droop- and oscillator-type converters in the context of grid forming converters with respect to steady state terminal response, transient stability, and harmonic compensation in converter output current or in network voltage. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: November 9, 2020

2020 journal article

Hierarchical Control for Virtual Oscillator Based Grid-Connected and Islanded Microgrids

IEEE TRANSACTIONS ON POWER ELECTRONICS, 35(1), 988–1001.

By: M. Awal n, H. Yu n, H. Tu n, S. Lukic n & I. Husain n

author keywords: Grid synchronization; hierarchical control; microgrid; secondary control; virtual oscillator control (VOC)
TL;DR: This work proposes a compatible hierarchical control structure that enables operation and seamless transition between islanded and grid-connected modes and achieves voltage and frequency regulation and grid synchronization in the islanded mode. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: April 20, 2020

2020 article

Passivity-Based Predictive-Resonant Current Control for Resonance Damping in LCL-Equipped VSCs

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, Vol. 56, pp. 1702–1713.

By: M. Awal n, W. Yu n & I. Husain n

author keywords: Active damping; admittance; current control; passivity; predictive control; resonance; stability
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: April 20, 2020

2020 article

Real-Time Stochastic Optimization of Energy Storage Management Using Deep Learning-Based Forecasts for Residential PV Applications

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, Vol. 56, pp. 2216–2226.

By: F. Hafiz n, M. Awal n, A. Queiroz* & I. Husain n

Contributors: F. Hafiz n, M. Awal n, A. De Queiroz* & I. Husain n

author keywords: Real-time systems; Energy management; Optimization; Solar power generation; Stochastic processes; Batteries; Deep learning; energy management; energy storage; load forecast; real-time control; stochastic programming
TL;DR: The proposed real-time method is effective in reducing the net electricity purchase cost compared to other existing energy management methods and introduces a rule-based controller underneath the optimization layer in finer time resolution at the power electronics converter control level. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, ORCID
Added: September 14, 2020

2017 conference paper

Predictive current control for stabilizing power electronics based AC power systems

2017 ieee energy conversion congress and exposition (ecce), 4634–4641.

By: M. Awal n, I. Husain n & W. Yu n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

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