Future Smart Grids Structures

Most renewable energy based power generation, energy storage systems and modern electronic loads are based on DC technologies. This necessitates new grid structure such as hybrid AC/DC and DC grids, which are key for future smart grids with higher efficiency, better power quality and enhanced capability to accommodate more renewable energy and modern loads. This project focuses on the development of hybrid AC/DC grids technologies, power electronics technologies, and power management technologies.

Hybrid AC/DC Microgrids: Configuration, Power Management, and Converter Control

Yunwei (Ryan) Li, Farzam Nejabatkhah

Conference/Workshop

Power Quality Control in Hybrid AC/DC Microgrids

Yunwei (Ryan) Li, Farzam Nejabatkhah

Conference/Workshop

Power Quality Control in Hybrid AC/DC Microgrids

Yunwei (Ryan) Li, Farzam Nejabatkhah

Conference/Workshop

3rd prize of student demonstration at ECCE

Yunwei (Ryan) Li, Zhongyi Quan

Award

Best paper award at PEAC

Yunwei (Ryan) Li, Hao Tian

Award

C.R. James Award

Sunny Kung

Award

Highly Cited Researcher

Yunwei (Ryan) Li

Award

IEEE Fellow

Yunwei (Ryan) Li

Award

IEEE Power & Energy Society (PES) Prize Paper Award

Wilsun Xu, Hao Liang, Tianyu Ding

Award

MSc Stanley G Jones award

Award

PhD Entrance Scholarship

Award

PhD Entrance Scholarship

Award

PhD QEII award

Mohammad Daryaei

Award

PhD Recruitment Scholarship

Award

PhD recruitment award

Award

PhD recruitment scholarship

Award

PhD recruitment scholarship

Award

Second Prize, Energy New Venture Competition

Yunwei (Ryan) Li, Changpeng Jiang, Zhongyi Quan

Award

University of Alberta Graduate Fellowship

Chatumal Perera

Award

University of Alberta Travel Grant

Chatumal Perera

Award

5-Level PWM Scheme for a Dual Inverter Drive Using an Open Winding Machine

John Salmon, Greg Kish, Chatumal Perera

Conference Proceedings

A Coupled Virtual Impedance for Parallel AC/DC Converter Based Power Electronics System

Yunwei (Ryan) Li

Scholarly Refereed Journal

A Modular Battery Voltage Balancing System Using a Series Connected Topology

John Salmon, Ali Khajehoddin, Atrin Tavakoli

Scholarly Refereed Journal

A Modular Design Approach to Provide Exhaustive Carrier-Based PWM Patterns for Multilevel ANPC Converters

Yunwei (Ryan) Li, Hao Tian, Yuzhuo Li

Scholarly Refereed Journal

A Modular Multilevel HVDC Buck–Boost Converter Derived From Its Switched-Mode Counterpart

Greg Kish, Sunny Kung

Scholarly Refereed Journal

A ROOT approach for stochastic energy management in electric bus transit center with PV and ESS

Hao Liang, Yuan Liu

Conference Proceedings

A Tunable Power Sharing Control Scheme for the Output-Series DAB DC–DC System With Independent or Common Input Terminals

Yunwei (Ryan) Li

Scholarly Refereed Journal

A Unified Control for the DC-AC Interlinking Converters in Hybrid AC/DC Microgrids

Yunwei (Ryan) Li

Scholarly Refereed Journal

A discounted stochastic multiplayer game approach for vehicle-to-grid voltage regulation

Hao Liang, Yuan Liu

Scholarly Refereed Journal

A stochastic game approach for PEV charging station operation in smart grid

Hao Liang, Yuan Liu

Scholarly Refereed Journal

A transformerless DC-DC MMC based on symmetrically interlinked subconverters

Greg Kish

Conference Proceedings

A unified modular multilevel DC/DC converter structure with flexible AC power transfer controls

Greg Kish, Sunny Kung

Conference Proceedings

AC and DC Microgrid Control

Yunwei (Ryan) Li

Book Chapter

Active Power Oscillation Cancellation with Peak Current Sharing in Parallel Interfacing Converters under Unbalanced Voltage

Yunwei (Ryan) Li, Farzam Nejabatkhah

Scholarly Refereed Journal

Aggregated model of large-scale wind farms for power system simulation software tools

Ali Khajehoddin, Navid Shabanikia

Patent

Alternative Approach to Analysis and Design of Series Resonant Converter at Steady State

Ali Khajehoddin, Mohammad Daryaei, Mohammad Ebrahimi

Scholarly Refereed Journal

An Improved Damping Method for Virtual Synchronous Machines

Ali Khajehoddin, Mohammad Ebrahimi

Scholarly Refereed Journal

An MHO Approach for Electric Bus Charging Scheme Optimization Based on Energy Consumption Estimation

Hao Liang, Yuan Liu

Conference Proceedings

An Optimization Approach to Design Decentralized Load Frequency Controllers for Generators in Islanded grids

Ali Khajehoddin

Scholarly Refereed Journal

Analysis and augmented model-based control design of distributed generation converters with flexible grid-support controller

Yasser Mohamed, Shahed Mortazavian

Scholarly Refereed Journal

Application of Battery Storage System to Improve Transient Responses in a Distribution Grid

Ali Khajehoddin

Conference Proceedings

Application of Generalized Peak Current Controllers for Active Power Filters and Rectifiers with Power Factor Correction

Ali Khajehoddin, Mohammad Ebrahimi

Conference Proceedings

Asymmetric Low-Voltage Ride-Through Scheme and Dynamic Voltage Regulation in Distributed Generation Units

Yasser Mohamed, Shahed Mortazavian

Conference Proceedings

Carrier Based Stair Edge PWM (SEPWM) for Capacitor Balancing In Multilevel Converters with Floating Capacitors

Yunwei (Ryan) Li, Hao Tian

Scholarly Refereed Journal

Carrier-Based MPC for Interleaved 2L-VSIs with Reduced Low-order Zero-Sequence Circulating Current

Yunwei (Ryan) Li, Changpeng Jiang, Dehong Zhou, Zhongyi Quan

Conference Proceedings

Carrier-based PWM Design of Multilevel ANPC-based Converter through Hierarchical Decomposition

Yunwei (Ryan) Li, Yuzhuo Li

Conference Proceedings

Concentrated Winding IPM Synchronous Motor Design for Wide Field Weakening Applications

John Salmon

Scholarly Refereed Journal

Control and Analysis of a Modular Battery Voltage Balancing Cell

John Salmon, Ali Khajehoddin, Atrin Tavakoli

Scholarly Refereed Journal

Control and Analysis of a Modular Bridge for Battery Cell Voltage Balancing

John Salmon, Ali Khajehoddin, Atrin Tavakoli

Scholarly Refereed Journal

Cooperative neural fitted learning for distributed energy management in microgrids via wireless networks

Hao Liang, Yuan Liu, Peng Zhuang

Conference Proceedings

Coupled-Virtual-Impedance Control for AC/DC Hybrid Microgrid Power Electronic Interlinking Unit with Dual Converters

Yunwei (Ryan) Li

Scholarly Refereed Journal

Current Source Converters and Their Control

Yunwei (Ryan) Li

Book Chapter

DC Substation for DC Grid—Part I: Comparative Evaluation of DC Substation Configurations

Yunwei (Ryan) Li

Scholarly Refereed Journal

DC Substation for DC Grid—Part II: Hierarchical Control Strategy and Verifications

Yunwei (Ryan) Li

Scholarly Refereed Journal

Decoupled Floating Capacitor Voltage Control of a Dual Inverter Drive for an Open-Ended Winding Induction Motor

John Salmon, Greg Kish, Chatumal Perera

Scholarly Refereed Journal

Design of Parallel Converters with L-Filter and Reduced Filter Size

Yunwei (Ryan) Li, Zhongyi Quan

Conference Proceedings

Design, Control, and Experimental Test of an Open-Winding IPM Synchronous Motor

John Salmon

Scholarly Refereed Journal

Digital Controller for a Power Converter

Ali Khajehoddin

Patent

Digital Controller for a Power Converter

Ali Khajehoddin

Patent

Fault Ride-Through Capability of Voltage-Controlled Inverters

Ali Khajehoddin, Mohammad Ebrahimi

Scholarly Refereed Journal

Flexible Interlinking and Coordinated Power Control of Multiple DC Microgrids Clusters

Yunwei (Ryan) Li

Scholarly Refereed Journal

Flexible Unbalanced Compensation of Three-Phase Distribution System Using Single-Phase Distributed Generation Inverters

Yunwei (Ryan) Li, Farzam Nejabatkhah

Scholarly Refereed Journal

Generalized Phase-Shift PWM for Active-Neutral-Point-Clamped Multilevel Converter

Yunwei (Ryan) Li, Hao Tian, Yuzhuo Li

Article in professional or trade journals

Grid Supporting and Robust Photovoltaic Systems

Ali Khajehoddin, Mohammad Ebrahimi

Patent

Grid-Supporting Inverters With Improved Dynamics

Ali Khajehoddin, Mohammad Ebrahimi

Scholarly Refereed Journal

Guidelines for Selecting Minimum Capacitance for a Floating Bridge Dual Inverter Drive

John Salmon, Greg Kish, Chatumal Perera

Conference Proceedings

Hierarchical Control of Multi-terminal DC Grids for Large-scale Renewable Energy Integration

Yunwei (Ryan) Li

Scholarly Refereed Journal

High Efficiency Operation of an Open-Ended Winding Induction Motor using Constant Power Factor Control

John Salmon

Scholarly Refereed Journal

High Performance Unified Control for Interlinking Converter in Hybrid AC/DC Microgrid

Yunwei (Ryan) Li, Fanxiu Fang

Conference Proceedings

High-Efficiency Operation of an Open-Ended Winding Induction Motor Using Constant Power Factor Control

John Salmon

Scholarly Refereed Journal

Hybrid AC/DC System Harmonics Control through Grid Interfacing Converters with Low Switching Frequency

Yunwei (Ryan) Li, Hao Tian

Scholarly Refereed Journal

Impact of PWM Schemes on the Common Mode Voltage of Interleaved Three-Phase Two-Level Voltage Source Converters

Yunwei (Ryan) Li, Zhongyi Quan

Scholarly Refereed Journal

Input-Independent and Output-Series Connected Modular DC-DC Converter with Inter-Module Power Balancing Units for MVDC Integration of Distributed PV

Yunwei (Ryan) Li

Scholarly Refereed Journal

Internal Paralleled Active Neutral Point Clamped Converter With Logic-Based Flying Capacitor Voltage Balancing

Yunwei (Ryan) Li, Zhongyi Quan

Patent

Internal Paralleled Active Neutral Point Clamped Converter With Logic-Based Flying Capacitor Voltage Balancing

Yunwei (Ryan) Li, Zhongyi Quan

Patent

Internal Paralleled Active Neutral Point Clamped Converter With Logic-Based Flying Capacitor Voltage Balancing

Yunwei (Ryan) Li, Zhongyi Quan

Patent

Internal paralleled active neutral point clamped converter with logic-based flying capacitor voltage balancing

Yunwei (Ryan) Li, Zhongyi Quan

Conference Proceedings

Isomorphic Relationships between Voltage-Source and Current-Source Converters

Yunwei (Ryan) Li, Yuzhuo Li

Scholarly Refereed Journal

Low Harmonic Loss PWM for a Dual Inverter Drive using a Floating Capacitor Inverter

John Salmon, Greg Kish, Chatumal Perera

Conference Proceedings

MULTI-LEVEL VOLTAGE SOURCE PARALLEL INVERTERS AND COUPLED INDUCTORS

John Salmon

Patent

Microgrid Control and Power Quality Improvement

Yunwei (Ryan) Li, Farzam Nejabatkhah

Invited/Keynote

Mixed Series-Parallel Connected Current Source Converters with Interleaved SPWM

Yunwei (Ryan) Li

Conference Proceedings

Model Predictive Control of a Nine-Level Internal Parallel Multilevel Converter with Phase-Shifted Pulse-Width-Modulation

Yunwei (Ryan) Li, Dehong Zhou, Zhongyi Quan

Scholarly Refereed Journal

More Renewable Electric Grids Enabled by Power Electronics Technologies

Yunwei (Ryan) Li

Invited/Keynote

Multi-Level Power Converters using Coupled Inductors and Parallel Connected 2-Level Inverters

John Salmon

Conference Proceedings

Multi-Port DC/DC Converter System

Yunwei (Ryan) Li, Zhongyi Quan

Patent

Multi-Terminal Modular DC-DC Converter For DC Networks

Greg Kish, Sunny Kung

Patent

Multi-Terminal Modular DC-DC Converter for DC Networks Inventors

Greg Kish, Sunny Kung

Patent

Multi-objective Power Management for EV Fleet with MMC-Based Integration into Smart Grid

Yunwei (Ryan) Li

Scholarly Refereed Journal

Multilevel Converter Topologies with Internally Paralleled Power Stages

Yunwei (Ryan) Li, Zhongyi Quan

Conference Proceedings

Multilevel Voltage Source Converter Topologies with Internal Parallel Modularity

Yunwei (Ryan) Li, Zhongyi Quan

Scholarly Refereed Journal

Multiport DC-DC-AC Modular Multilevel Converters for Hybrid AC/DC Power Systems

Greg Kish, Mohammadhadi Rouhani

Scholarly Refereed Journal

Multiport Modular Multilevel Converter for DC Systems

Greg Kish

Scholarly Refereed Journal

Optimal Design of Nested Current and Voltage Loops in Grid-Connected Inverters

Ali Khajehoddin, Nima Amouzegar-Ashtiani

Conference Proceedings

Optimal and Systematic Design of Current Controller for Grid-Connected Inverters

Ali Khajehoddin, Mohammad Ebrahimi

Scholarly Refereed Journal

Overview of voltage support strategies in grid-connected VSCs under unbalanced grid faults considering LVRT and HVRT requirements

Yasser Mohamed, Shahed Mortazavian

Conference Proceedings

PWM Control of a Dual Inverter Drive X using a Floating Capacitor Inverter

John Salmon, Greg Kish, Chatumal Perera

Conference Proceedings

Phase-Disposition PWM based 2DoF-Interleaving Scheme for Minimizing High Frequency ZSCC in Modular Parallel Three-level Converters

Yunwei (Ryan) Li, Zhongyi Quan

Scholarly Refereed Journal

Power Control

Ali Khajehoddin

Patent

Power Quality Control of Smart Hybrid AC/DC Microgrids: An Overview

Yunwei (Ryan) Li, Farzam Nejabatkhah, Hao Tian

Scholarly Refereed Journal

Robust Control Design for High-Power Density PV Converters in Weak Grids

Ali Khajehoddin

Scholarly Refereed Journal

Robust Floating Capacitor Voltage Control of Dual Inverter Drive for Open-Ended Winding Induction Motor

John Salmon, Greg Kish, Chatumal Perera, Siyu Leng

Conference Proceedings

Robust H-inf DC link control design for high-power density converters with high-order filter in PV systems

Ali Khajehoddin

Conference Proceedings

Single-Phase Power System Controller and Method Therefor

Ali Khajehoddin

Patent

Smart Electrical Grid Interface Using Floating H-Bridges to Improve the Performance of Induction Motors

John Salmon

Scholarly Refereed Journal

Stator Short-Circuit Fault Detection and Location Methods for Brushless DFIMs using Nested-loop Rotor Slot Harmonics

Ali Khajehoddin

Scholarly Refereed Journal

Stochastic game between cloud broker and cloudlet for mobile cloud computing

Hao Liang, Yuan Liu

Conference Proceedings

Systematic Derivation of Simplified Active-Neutral-Point-Clamped Multilevel Converter through Matrix Models

Yunwei (Ryan) Li, Hao Tian, Yuzhuo Li

Conference Proceedings

Systematic Synthesis and Derivation of Multilevel Converters using Common Topological Structures with Unified Matrix Models

Yunwei (Ryan) Li, Yuzhuo Li, Zhongyi Quan

Scholarly Refereed Journal

Vacuum Packaged Piezoelectric Energy Harvester for Powering Smart Grid Monitoring Devices

Ali Khajehoddin

Scholarly Refereed Journal

Vacuum packaged powerline magnetic field energy harvester for powering smart monitoring device in power system

Ali Khajehoddin

Patent

Vector Shifted Model Predictive Power Control of Three-Level Neutral-Point-Clamped Rectifiers

Yunwei (Ryan) Li, Changpeng Jiang, Dehong Zhou, Zhongyi Quan

Scholarly Refereed Journal

Vehicle-to-grid frequency regulation signal optimization based on inhomogeneous hidden Markov model

Hao Liang, Yuan Liu

Conference Proceedings

Virtual Resistor Based Harmonic Sharing of DC Active Power Filter in Hybrid AC-DC Microgrid

Yunwei (Ryan) Li, Hao Tian

Conference Proceedings

Virtual Transformer Control for DC-DC Interlinking Converters in DC Microgrids

Yunwei (Ryan) Li

Conference Proceedings