Special Session


Flux Modulation Machines and Controls

Organizer     Yuting Gao               Wuhan University
                      Ziyi Liang                  Huazhong University of Science and Technology
                      Yuanzhi Zhang        Wuhan University
                      Noman Baloch         ZeroAvia Limited , UK


Due to the advantages of high torque density, low torque ripple and more design freedoms, flux modulation machines have broad application prospects in servo system, renewable energy generation and transportation electrification, etc. Topology families of flux modulation machines include vernier machine, magnetic geared machine, flux switching machine, flux reversal machine, variable reluctance machine and so on. In order to improve performances such as torque density, power factor, efficiency, and to promote industrial application, further research on topology, design and control of flux modulation machine is needed. The purpose of this special session is to provide a platform for researchers worldwide to share their recent research progress on the flux modulation machine, ranging from novel topology, optimal design, control strategy and application of various flux modulation machines.

Topics of interest include, but not limited to:

• Analytical modeling

• Electromagnetic analysis

• Novel topologies

• Multi-objective optimization techniques

• Multi-electrical or mechanical ports flux modulation machines

• Loss and thermal analysis

• New materials and manufacturing

• Novel control strategies

• Applications studies


Novel Reluctance Motors and Drives

Organizer      Chun Gan      Huazhong University of Science and Technology 

                      Bo Wang       Southeast University

                      He Cheng      China University of Mining and Technology


The reluctance motors include switched reluctance motor, synchronous reluctance machine, variable reluctance motor, permanent-magnet assisted reluctance motor, etc. With the advantages of high reliability, high starting torque, and low manufacturing costs, reluctance motors show great potential in electric vehicles, aerospace, and other application fields. To improve the system efficiency, optimize the operation performance, expand the speed range, etc., the design and control of the reluctance motor require further investigation. Besides, novel converter topologies also play an important role in increasing the system integration level. Therefore, in this session, up-to-date research results of advanced designs and control schemes are presented to solve critical problems of reluctance motors.


Topics of interest include, but not limited to:

• Electromagnetic analysis and optimization design
• Advanced modulation strategy
• Sensorless control
• Signal measurement and reconstruction scheme
• Novel converter topologies
• Fault diagnosis and tolerant control
• Starter/generator application


High Magnetic Fields and their Applications

Organizer      Xiaotao Han      Huazhong University of Science and Technology

                      Quanliang Cao   Huazhong University of Science and Technology


High magnetic fields provide extreme experimental conditions for discovering new phenomenon, regulating new physical properties, revealing new physical laws, and verifying theories. The breakthroughs in high magnetic field technology and related experimental technology and equipment will greatly promote the research progress in the fields of material science, life science and advanced electromagnetic engineering, and also have important practical significance for serving major strategic needs in many fields such as aerospace and renewable energy. The aim of the proposed special session is to share and promote recent research advances in the generation, measurement, control, and applications of high magnetic fields.



Topics of interest include, but not limited to:

• Advanced magnet technologies
• Modeling and simulation of high magnetic field systems
• Power supply and waveform regulation of high magnetic fields
• Scientific measurements under high magnetic fields
• Applications of high magnetic fields I: Utilization on the force effect, such as electromagnetic forming and electromagnetic launch
• Applications of high magnetic fields II: Utilization on the magnetic effect, such as  magnetization/demagnetization for permanent magnet electrical machines


Related Technologies with Design and Control for High-Speed and High-Power-Density Machines

Organizer     Takashi Kosaka      Nagoya Institute of Technology, Japan

                      David Gerada        University of Nottingham, UK


Nowadays, electric machines with high power density play an important role for electrifications, in particular, in transportation applications. As it is well-known, a high-speed machine is one of approaches for getting high power density. This special session focuses on recent research and development related with design and control of high-speed machines. However, there are so many issues to be overcome for achieving really high-speed and high-power density machine toward to more than 10kW/kg. Any topic of related works with design and control for high-speed and high-power density machines are welcome to discuss. 



Topics of interest include, but not limited to:

• Multi-physics simulations

• Applications of low loss materials

• Manufacturing and processing

• Cooling system design

• Bearings, sensors

• Sophisticated control techniques


Linear Motors and Planar Motors

Organizer        Qinfen Lu           Zhejiang University

                        He Zhang           Harbin Institute of Technology

                        Michael Galea    University of Malta


Linear motors have great application prospect in many areas, such as the lithography machine, high-grade CNC machine tool, flexible intelligent transport systems, electromagnetic launch, advanced rail transit, ropeless lifter, etc. due to no transmission chains. They are receiving more and more attentions from both academia and industry in recent years. To solve inherent problems and speed up the practical process of linear motors, more novel solutions are required. The main objective of this special session is to collect the latest developments in analysis, design, and control of all kinds of linear motors, planar motor, and magnetic levitation technologies, and discuss future developments in this area.



The main topics but not limited are as follows:

• New topologies of linear motors and actuators

• Planar motors and multi-dimensional actuators

• Magnetic levitation for linear drives

• Cooling and thermal analysis of linear motors

• Advanced control methods of linear motors

• Testing technologies and applications


Electric Machines and Electromagnetic Devices Applied for the Fractional Frequency Transmission System

Organizer      Shaofeng Jia             Xi'an Jiaotong University

                      Deliang Liang           Xi'an Jiaotong University

                      Tianjie Zou               The University of Nottingham, UK


In recent years, offshore wind power around the world has developed rapidly .The fractional frequency transmission system(FFTS)is regarded as a promising solution to integrate offshore wind power with the advantage of larger transmission capacity and better economy of medium distance transmission. To improve the efficiency and optimize the performance of the transmission system, further research is needed on the design and control of electric machines and electromagnetic devices related to FFTS. The object of this Special Session is to provide a forum so that the researchers worldwide can share their recent research achievements and exchange ideas of the development of electric machines in FFTS.



Topics of interest include, but not limited to:

• Principle investigation and theoretical analysis
• Novel and typical topology of generator, transformer and frequency conversion equipment in FFTS
• Design, optimization, modelling and simulation
• Drive and control issues
• Prototype demonstration
• Potential application discussion


Advanced Design and Control of Fault-Tolerant Machine Systems

Organizers      Xiaoqin Zheng               Qingdao University

                        Jinlin Gong                     Shandong University

                        Zicheng Liu                      Huazhong University of Science and Technology

                        Ngac Ky Nguyen             Arts et Métiers Institute of Technology


Fault-tolerant performance is of vital importance for some machine systems, especially in applications of ship propulsion, spacecrafts, aircrafts, electric vehicles and wind power generation, etc. In recent years, novel solutions are emerging to enhance the fault-tolerant capability in both motor design and motor drive fields, including novel motor designs and structures, advanced converter topologies and modulation mothods, intelligent motor drive strategies, and so on. This Special Session will deal with advanced design and control of fault-tolerant electrical machine and drive systems.



Topics of interest include, but not limited to:

• Modelling and design of fault-tolerant electrical machines

• Novel topologies and structures of fault-tolerant electrical machines

• Novel fault-tolerant converters and improved Pulse Width Modulation methods

• Advanced drive and control methods of fault-tolerant machines

• Electromagnetic compatibility technologies for fault-tolerant drive systems

• Noise and vibration of fault-tolerant machines

• Fault diagnosis and fault-tolerant control of electrical machine drive systems

• Artificial Intelligence applications in fault-tolerant machine systems


Electrical Machines for More/All Electric Aircraft

Organizer        Ningfei Jiao           Northwestern Polytechnical University

                        Xingwei Zhou        Hohai university

                        Yanwu Xu              Nanjing Normal University

                        Chenghao Sun      Nanjing Normal University


The More/All Electric Aircrafts are the important trends in modern aerospace for reducing the overall aircraft weight, operation cost and environmental impact. Advanced electrical machine systems are the basement of More/All Electric Aircraft, which are employed to generate electric power and replace existing hydraulic, pneumatic, and mechanical actuators. The rapid development of More/All Electric Aircraft poses new challenges in the design and control of aircraft electrical machine systems. The aim of the proposed special session is to collect and disseminate the latest research and advanced technologies in the field of electrical machines and application for the More/All Electric Aircraft.



Topics of interest include, but not limited to:

• Design and analysis of aircraft electrical machines

• Modeling and simulation of aircraft electrical machines

• Control strategies for aircraft electrical machines

• Power electronics drive for aircraft electrical machines

• Aircraft integrated starter/generator

• Aircraft generators

• Electrical machines for aircraft electric propulsion

• New topologies of electrical machines for aircraft

• Fault diagnosis for aircraft electrical machines

• Fault-tolerant electrical machines for aircraft application


Emerging Multi-Port Electrical Machines and Systems

Organizer        Yixiao Luo               Huazhong University of Science and Technology

                        Xing Zhao               York University

                        Wentao Huang       Jiangnan University


Distinct from the conventional machines with only one electrical and one mechanical port, electric machines featuring multiple electrical/mechanical ports (the so-called multiport electric machines) provide a compact, flexible, and highly efficient manner to convert and/or transfer energies among different ports. Further investigation on the design and control of the multiport electric machines are required to enhance the system performance. The aim of this special session is to share and promote recent research advances in the design, control, applications of high performance multiport electric machines.



Topics of interest include, but not limited to:

• Advanced control of multiphase machines

• Fault diagnosis and tolerant control of multiphase machines

• Electromagnetic analysis and optimization of multiport electric machines

• Applications of multiport machines in industry, such as onboard charger, ECVT etc..

• Novel converter topology for multiport electric machines

• Design of integrated drive for multiport electric machines


Operation and Control of Renewable Power Generation Systems under Grid Faults

Organizer        Donghai Zhu         Huazhong University of Science and Technology

                        Yingbiao Li            Huazhong University of Science and Technology

                        Zhen He                Hangzhou Dianzi University

                        Yuanzhu Chang    The Hong Kong Polytechnic University


Renewable energy techniques such as wind power, photovoltaic are regarded as the main solution to achieve power system sustainability and energy supply security. However, the renewable power generation system (RPGS) faces severe challenges such as the instability and protection under grid fault, due to the low inertia, weak anti-disturbance and overcurrent capability, which also poses a serious threat to the safe and stable operation of power system. As a consequence, the operating and control of RPGS under grid faults has becomes an important issue for safe grid integration of RPGS, which is an international research hotspot and has attracted widespread attention. The session will serve as a forum for reporting the technical challenges and recent advances in the modeling, analysis, design, and control of RPGS under grid faults.



Topics of interest include, but not limited to:

• Advanced packaging technology for high-overload power components

• Transient electrothermal stress

• High-overload power electronic converters

• Transient modeling and simulation

• Analysis of fault characteristics

• Stability analysis and improvement methods

• Fault ride-through technologies

• Grid-forming technologies

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