Chun Gan

About Chun Gan

Chun Gan, With an exceptional h-index of 36 and a recent h-index of 35 (since 2020), a distinguished researcher at Huazhong University of Science and Technology, specializes in the field of Electrical motor drives, electical motor design, high efficiency power converters, electric vechiles.

His recent articles reflect a diverse array of research interests and contributions to the field:

Cooperative Current Ripple Reduction Strategy for Three-Phase Inverter With Flexible Zero Vector Redistribution

Inductance Calculation and Analysis of Axial-Flux Slotless Surface-mounted Permanent Magnet Machine with Equidirectional Toroidal Winding

Optimized Nine-Switch Converter-Fed Flux-Modulated Doubly-Salient Reluctance Motor Drive With Integrated ZSC Regulation Ability Considering Efficiency Improvement

Variable Winding-Based Highly-Integrated Electric-Drive-Reconstructed System for SRM-Based EVs

Few-Shot Learning with Residual Current for EV Inverter Fault Diagnosis of EV Powertrain

Analytical Inductance Modeling of Segmental Rotor Switched Reluctance Motor with Single-Tooth Windings

Modified Voltage Vector Modulation Strategy for Open-Winding FMDRM Drives With Switching Action Reduction Capable of ZSV Regulation

Optimization Design of a Novel Permanent Magnet Linear-rotary Generator for Offshore Wind-wave Combined Energy Conversion Based on Multi-Attribute Decision Making

Chun Gan Information

University

Huazhong University of Science and Technology

Position

___

Citations(all)

3698

Citations(since 2020)

3182

Cited By

1655

hIndex(all)

36

hIndex(since 2020)

35

i10Index(all)

74

i10Index(since 2020)

72

Email

University Profile Page

Huazhong University of Science and Technology

Chun Gan Skills & Research Interests

Electrical motor drives

electical motor design

high efficiency power converters

electric vechiles

Top articles of Chun Gan

Cooperative Current Ripple Reduction Strategy for Three-Phase Inverter With Flexible Zero Vector Redistribution

Authors

Haotian Ren,Chun Gan,Kai Ni,Chong Zhang,Shuanghong Wang,Ronghai Qu

Journal

IEEE Transactions on Power Electronics

Published Date

2024/2/1

In traditional space vector pulse width modulation (SVPWM) scheme, the duration of zero vector (vector 0, vector 7) is equally divided. On this occasion, the corresponding control freedom is wasted, since the zero vector distribution exerts an influence on the current ripple without affecting the total voltage vector synthesis. Accordingly, this paper proposes a novel cooperative current ripple reduction strategy based on zero vector redistribution for the typical two-level three-phase inverters. In the proposed strategy, the three-phase current ripple condition is classified into 3 cases according to the current ripple change rate and the duty cycle of each phase. In each case, the corresponding optimization method of zero vector distribution is derived and performed, such as only using vector 0, only using vector 7, or flexibly distributing vectors 0 and 7. With the proposed strategy, the three-phase current ripples are reduced …

Inductance Calculation and Analysis of Axial-Flux Slotless Surface-mounted Permanent Magnet Machine with Equidirectional Toroidal Winding

Authors

Jikai Si,Meng Huang,Rui Nie,Chun Gan,Yaofei Han

Journal

IEEE Transactions on Energy Conversion

Published Date

2024/3/22

For the purpose of improving torque density of Axial-flux slotless surface-mounted permanent magnet (AFSSPM) machines, an equidirectional toroidal winding (EDTW) structure is proposed in previous research and applied. Due to the special winding layout of EDTW changing the flux distribution, the winding inductance of the EDTW-AFSSPM machine requires specific analysis to estimate the performance of flux-weakening capability, power factor, etc. In this paper, the winding inductances of the EDTW-AFSSPM machine are calculated and analyzed. First, to facilitate the analysis of inductances, winding layout and flux distribution of AFSSPM machines with EDTW and traditional TW are compared. Second, the flux density at the stator surface of two AFSSPM machines is obtained by the image method, and then the inductance parameters of two machines are calculated. At the same time, end-winding inductance …

Optimized Nine-Switch Converter-Fed Flux-Modulated Doubly-Salient Reluctance Motor Drive With Integrated ZSC Regulation Ability Considering Efficiency Improvement

Authors

Zhiyue Yu,Chun Gan,Kai Ni,Shuanghong Wang,Xingzhong Liu,Jianbo Sun,Ronghai Qu

Journal

IEEE Transactions on Transportation Electrification

Published Date

2024/1/24

Owing to the significant torque ripple and vibration reduction ability, flux-modulated doubly-salient reluctance motor (FMDRM) drives have been widely investigated. However, the parallel dual-inverter is commonly utilized in conventional FMDRM drives, where the power switch number is doubled compared to conventional ac motor drives. In this paper, to reduce the utilization of power switches, an optimized nine-switch converter-fed FMDRM drive is proposed to achieve integrated zero-sequence current regulation ability. Firstly, the winding connection is developed, and the equivalent vectors of the nine-switch converter are analyzed for the dc-biased sinusoidal current excitation. Then, a carrier-based space vector modulation strategy is put forward, where the regulations of the rotating and zero-sequence voltage components are achieved, ensuring the dc-biased sinusoidal current excitation. Moreover, to further …

Variable Winding-Based Highly-Integrated Electric-Drive-Reconstructed System for SRM-Based EVs

Authors

Qingguo Sun,Hongyi Zhang,Xu Liu,Feng Niu,Chun Gan

Journal

IEEE Transactions on Power Electronics

Published Date

2024/2/20

This paper presents a highly integrated electric-drive-reconstructed system for electric vehicles based on a variable winding structure-based switched reluctance motor (SRM). In motor driving mode, the implementation of bipolar current excitation and regenerative braking offers significant advantages in terms of balanced switching loss and heat dissipation. The series-connected and the series & parallel–connected winding structures are adopted for enhanced torque and extended speed requirements respectively. In single-phase charging mode, a front-stage bridgeless interleaved totem-pole power factor corrector and a back-stage Buck-Boost converter are respectively obtained by multiplexing and reconstructing SRM windings and converter devices to reduce the ripple of input AC current. In three-phase charging mode, a front-stage three-phase four-bridge converter, and a back-stage Buck converter are …

Few-Shot Learning with Residual Current for EV Inverter Fault Diagnosis of EV Powertrain

Authors

Wangjie Lang,Yihua Hu,Zeliang Zhang,Chun Gan,Jikai Si,Huiqing Wen

Journal

IEEE Transactions on Transportation Electrification

Published Date

2024/1/12

The data-driven approach plays a critical role in the reliability of permanent magnet synchronous motor (PMSM) drive for electric vehicles (EVs). Generally, data limitations and the ability of algorithms to extract fault features significantly affect the performance of the fault diagnosis. It is challenging to obtain the desired number and quality of samples due to the huge cost of obtaining fault data for motor drive systems under complex operating conditions. Considering the drawbacks of data-driven methods for fault diagnosis including hardware costs and data uncertainty, a combined model and data-driven few-shot learning network was proposed to detect voltage source inverter (VSI) open-circuit faults in PMSM in this paper. The proposed method utilized the residuals obtained from the observer data and the actual measurement data being used as raw samples to get rid of the effects of harmonics and thus improve the …

Analytical Inductance Modeling of Segmental Rotor Switched Reluctance Motor with Single-Tooth Windings

Authors

Jianbo Sun,Yang Yang,Chun Gan,Shuanghong Wang,Ziqi Zhao,Zhiyue Yu,Ronghai Qu,Huangyuan Wu

Journal

Journal of Electrical Engineering & Technology

Published Date

2024/2/17

The accurate analytical inductance model is an effective tool for performance evaluation and preliminary design of single-tooth winding segmental rotor switched reluctance motors (STSSRMs). Due to the discontinuous rotor structure and the special magnetic circuit, the analytical inductance calculation of the STSSRM is more complicated than that of the conventional SRM, and it is hard to obtain the accurate inductance at each position directly. To solve this issue, in this paper, an accurate and fast analytical approach is proposed to determine the phase inductance of STSSRM at any rotor position. Firstly, with the analysis of the flux line distribution, the flux tube models and the equivalent magnetic circuits at three critical positions are established to calculate the corresponding permeance and inductance parameters. Secondly, according to the proper approximation in a certain region, an additional critical …

Modified Voltage Vector Modulation Strategy for Open-Winding FMDRM Drives With Switching Action Reduction Capable of ZSV Regulation

Authors

Zhiyue Yu,Chun Gan,Kai Ni,Shuanghong Wang,Jianbo Sun,Ronghai Qu

Journal

IEEE Transactions on Power Electronics

Published Date

2024/1/4

Thanks to the dc-biased sinusoidal current excitation, the flux modulated doubly-salient reluctance motor (FMDRM) drive is endowed with the zero-sequence voltage (ZSV) regulation ability to achieve dc-biased current control. The open-winding converter with a common dc bus is widely utilized and the ZSV regulation is achieved by redistributing the duration time of zero vectors, which significantly increases the number of switching actions, leading to additional switching losses. To achieve switching action reduction, this article proposes a novel voltage vector modulation strategy for ZSV regulation. According to the contribution to the common-mode voltage, the active vectors are divided into two groups. In addition, the desired ZSV is generated by modifying the duration time of the active vectors instead of zero vectors. Furthermore, two duty ratio calculation methods are put forward with different zero vector …

Optimization Design of a Novel Permanent Magnet Linear-rotary Generator for Offshore Wind-wave Combined Energy Conversion Based on Multi-Attribute Decision Making

Authors

Rui Nie,Jikai Si,Peixin Wang,Zhongwen Li,Jing Liang,Chun Gan

Journal

IEEE Transactions on Energy Conversion

Published Date

2024/2/8

To realize the efficient and low-cost utilization of offshore renewable energy, a novel direct drive wind-wave combined energy conversion (WWCEC) system which is based on a two-degree-of-freedom linear-rotary generator (LRG) comes into being nowadays. It inherently has some merits of low cost, high efficiency, and good operation stability. This paper proposes a permanent magnet LRG with a new topology for the direct drive WWCEC system and conducts its optimization to ensure good performance for the whole system. A technique for order preference by similarity to an ideal solution is used to finish the optimization to trade off among no-load back electromotive force (EMF), harmonic distortion rate of no-load back EMF, and cogging torque/detent force of rotary/linear generator unit. The optimization process includes initial design, sensitivity analysis of optimization parameters, weight coefficient determination …

Model-Free Predictive Voltage Control of the Floating Capacitor in Hybrid-Inverter Open-Winding Permanent Magnet Synchronous Motor

Authors

Chong Zhang,Chun Gan,Kai Ni,Shuanghong Wang,Jianbo Sun,Zhiyue Yu,Ronghai Qu

Journal

IEEE Transactions on Industrial Electronics

Published Date

2024/2/5

In a hybrid-inverter open-winding permanent magnet synchronous motor (OW-PMSM) drive, the motor and the floating capacitor are controlled simultaneously. Besides, since the compensatory inverter barely provides active power under steady-state operation, the unity power factor control (UPFC) of the main inverter (MI) is also required. However, the conventional model-based predictive control of the hybrid-inverter OW-PMSM is highly sensitive to the accuracy of parameters, including the floating capacitance and stator inductance. Serious current distortions and system oscillations appear when the model parameters are mismatched with the actual ones. In addition, unmodeled parts such as power switch voltage drops and disturbances also degrade the system performance. Hence, a linear disturbance observer (LDO) based model-free predictive control (MFPC) is put forward. By using ultralocal models to …

A Dual-Rotor Axial-Flux PM Motor With Equidirectional Toroidal Winding and 3-Slot/4-Pole Unit Block for Torque Density Improvement

Authors

Jikai Si,Sen Li,Rui Nie,Peixin Wang,Shuai Xu,Chun Gan

Journal

IEEE Transactions on Industrial Electronics

Published Date

2024/4/24

In this article, a dual-rotor axial-flux permanent magnetmotor (AFPMM) with equidirectional toroidal winding and 3-slot/4-pole (ETW-3S4P) unit block is proposed to improve the torque density. The advantages of the proposed motor in improving the torque density can be attributed to its high winding factor, low q value of the slot/(pole. phase), and high gear ratio. The motor performance is thoroughly analyzed with reference to the AFPMMs with ETW-3S2P and with conventional concentrated windings and the 3S4P (CW-3S4P). First, the motor structure and the operating mechanism are presented and analyzed. Second, the theoretical analysis is verified by the three-dimensional finite element analysis, and the effect of themagnetic gearing on the torque is also investigated. Then, a detailed performance comparison of AFPMMs with ETW-3S4P, ETW-3S2P, and CW-3S4P, respectively, is carried out. It is shown that the …

Analytical torque ripple reduction strategy for flux modulated doubly-salient reluctance motor drives based on ZSC harmonic regulation

Authors

Zhiyue Yu,Chun Gan,Kai Ni,Yu Chen,Ronghai Qu

Journal

IEEE Transactions on Industrial Electronics

Published Date

2023/3/13

Compared to the conventional doubly-salient reluctance motor (DRM) drives, the novel flux modulated DRM (FMDRM) drives can achieve a better overall torque performance due to the dc-biased sinusoidal current excitation. However, previous investigations only focus on the dc-biased and fundamental current components, and the contributions of current harmonics to the torque production are not clear. This article proposes an analytical torque ripple reduction strategy for open-winding FMDRM drives based on zero-sequence current (ZSC) harmonic regulation. First, the contribution of third-order ZSC harmonic to the electromagnetic torque is investigated together with the dc-biased sinusoidal current components. Second, an alternative torque component cancellation method is put forward, where the additional third-order ZSC is utilized to counteract the dominating part of the alternative torque generated by the …

Quasi-Z-Source Fed SRM Drive for Torque Ripple Minimization and Speed Range Extension With Three-Switch Conduction

Authors

Qingguo Sun,Limei Chen,Xu Liu,Feng Niu,Chun Gan

Journal

IEEE Transactions on Industrial Electronics

Published Date

2023/1/4

This article proposes a quasi-Z-source (QZS)-based modular switched reluctance motor (SRM) drive to suppress the source current ripple, minimize the torque ripple, widen the constant torque range and speed range, and enhance the system reliability. To take full advantage of the QZS unit and modular power modules, the QZS-based modular SRM converter is first constructed. Subsequently, a three-switch conduction-based current compensation mechanism is developed to deal with the torque plummet issue caused by the inherent series excitation mode. Meanwhile, a novel four-region direct instantaneous torque control strategy is proposed to further suppress torque ripple. Furthermore, a voltage regulation method based on a compensation mechanism is developed to suppress the source current ripple and provide great assistance in implementing the above-mentioned strategy more effectively. In addition …

Phase-Shift-Free Current Reconstruction Strategy for Flux Modulated Doubly-Salient Reluctance Motor Drives With Central-Symmetric Modulation

Authors

Zhiyue Yu,Chun Gan,Kai Ni,Shuanghong Wang,Haochen Shi,Jianbo Sun,Ronghai Qu

Journal

IEEE Transactions on Transportation Electrification

Published Date

2023/10/2

A novel phase current reconstruction method is present in this paper for the flux modulated doubly-salient reluctance motor drive without phase shift. Conventionally, each phase current must be sampled individually with different sensors as the zero-sequence current (ZSC) excitation is required, which significantly increases the system cost. Besides, to achieve the ZSC excitation, the switching sequence of the converter is much more complicated, where conventional phase current reconstruction strategies cannot be utilized. For switching sequence simplification, the active-vector-based zero sequence voltage (ZSV) modulation is utilized. In addition, the current sensor installation position and corresponding sampling method are put forward to reconstruct phase currents considering ZSC detection. Furthermore, a central-symmetric duration time extension method is presented to avoid sampling failure in …

Sequential Model Predictive Control of Open-Winding Permanent Magnet Synchronous Motor without Weighting Factor

Authors

Chong Zhang,Chun Gan,Kai Ni,Shuanghong Wang,Jianbo Sun,Ronghai Qu

Published Date

2023/11/5

A novel sequential model predictive control for the open-winding permanent magnet synchronous motor (OWPMSM) is put forward, which eliminates the tedious tuning of weighting factors. In the OW-PMSM drive powered by a dual-inverter with a common dc bus, the 0-axis and -axes currents of OW-PMSM should be controlled simultaneously due to the existence of the zero-sequence loop. Because of the large difference between the 0-axis and -axes impedance, the weighting factor is often needed in traditional model predictive control (MPC) to balance the 0-axis and -axes current control. To prevent the tedious tuning work of the weighting factor, a novel MPC for the OW-PMSM drive is put forward, where two sequential predictive stages are designed to evaluate the voltage vectors (VVs). In the first stage, the zero sequence current (ZSC) tracking performances of all voltage vectors (VVs) are predicted. Then …

Unified Analytical Modeling of Armature Magnetic Field of Slotless PM Motor With Equidirectional Toroidal Winding

Authors

Yanqi Wei,Jikai Si,Rui Nie,Peixin Wang,Shuai Xu,Chun Gan,Jing Liang

Journal

IEEE Transactions on Industrial Electronics

Published Date

2023/11/22

This article proposes a unified analytical model (AM) for the armature magnetic field (AMF) of slotless permanent magnet (PM) motors with equidirectional toroidal winding (ETW). The AM is based on the magnetic field generated by the active side conductors of ETW single-phase coils. It not only can clarify the operating mechanism of ETW AMF in the theory and quantitatively analyze its AMFs and inductance, but also reveals the characteristics that distinguish ETW inductance analysis from other windings. In addition, it can serve as the cornerstone for analyzing the AMF of other windings. First, the structural parameters unified principle of different slotless PM motors with ETW is proposed. Second, based on the principle, the unified AM of AMF generated by the active side conductors and inductance of ETW single-phase coils are established and verified by the finite-element model. Finally, a prototype of a dual rotor …

Eigenfrequency Identification Scheme for Strongly Coupled Series-Parallel Compensated Wireless Power Transfer System

Authors

Yu Chen,Chun Gan,Haochen Shi,Kai Ni

Journal

IEEE Transactions on Circuits and Systems II: Express Briefs

Published Date

2023/3/6

This brief proposes an eigenfrequency identification scheme (EIS) based on circuit theory in time domain for a series-parallel compensated wireless power transfer (SP-WPT) system with the pure capacitance filter. In the SP-WPT system, the high nonlinear features (HNFs), including the strong magnetic coupling and diode rectifier influence the system operation by causing the distortion and discontinuity of the voltages and currents. Thus, the effectiveness of fundamental harmonic approximation is influenced, especially when the impact of HNF becomes serious under the strong magnetic coupling and light load conditions. Consequently, the time domain analysis is developed for the diode rectifier-equipped strongly coupled SP-WPT system. Three operation modes of the diode rectifier are analyzed in detail, where the influence of constant dc-link voltage is investigated. Besides, the two eigenfrequencies of the SP-WPT …

Angle Position Compensation Control Strategy for High-Speed Power Generation of Aerospace Integrated Switched Reluctance Starting/Generating System

Authors

Yiying Wu,Zixin Li,Shuanghong Wang,Longchun Li,Chun Gan,Jianbo Sun

Journal

IEEE Journal of Emerging and Selected Topics in Power Electronics

Published Date

2023/9/4

Research on high-speed switched reluctance starting/generating (SRS/G) systems is an important direction to enhance the power generation of aircraft electric power systems. In practical engineering applications, due to the limitation of digital processor performance, the low-frequency discrete control has a great influence on the control accuracy of the commutation process at high speed, which leads to the instability of power generation voltage. In this article, an angle position compensation algorithm is presented to solve the delay of commutation control in high-speed SRS/G systems under low control frequency. By analyzing the high-speed power generation operating characteristics of the switched reluctance motor (SRM), the optimal turn-on and turn-off angles are given for the whole high-speed power generation range of 8000–20000 r/min. The simulation and experimental results show that the angle position …

Self-Updating Incremental Model Based Robust Current Predictive Control for Permanent-Magnet Synchronous Motor Drives

Authors

Hongzhe Wang,Chun Gan,Kai Ni,Jianbo Sun,Ronghai Qu

Published Date

2023/11/5

In this paper, a novel self-updating incremental model based predictive current control strategy is proposed for permanent-magnet synchronous motor (PMSM) drive, which improves the parameter robustness and current performance. In the proposed strategy, a virtual inductance is introduced to design the variable-structure incremental predictive model. Then, historical data of the past two periods, which reflect the practical operating condition, are adopted to train and update the model. In this way, the parameter robustness and predictive accuracy are both improved. Simulation results are performed to validate the effectiveness of the proposed scheme.

Full-Speed Domain Performance Comparison of Traditional and Segmented-Rotor Switched Reluctance Motors

Authors

Ziqi Zhao,Jianbo Sun,Chun Gan,Shuanghong Wang,Yang Yang,Zhiyue Yu,Huangli Wei,Ronghai Qu

Published Date

2023/11/5

In this paper, to investigate the superiority of the segmented rotor structure, a full-speed domain comparative study of the traditional and segmented-rotor switched reluctance motors is put forward, which comprehensively reflects the performance differences between the two motors. The static inductance characteristics of these two motors are analyzed by means of electromagnetic simulation, followed by a comparative performance analysis under three operating conditions: constant torque region, constant power region, and series excitation region, and the reasons for the performance differences are given. Finally, the external characteristics of the two motors are analyzed comprehensively. The work in this paper provides guidance for the optimal design of SSRM.

Linear Inductance Model Reshaping-Based Sensorless Position Estimation Method for SRM With Anti-Magnetic Saturation Capability

Authors

Qingguo Sun,Tianze Lan,Xu Liu,Shanhu Li,Feng Niu,Chun Gan

Journal

IEEE Journal of Emerging and Selected Topics in Power Electronics

Published Date

2023/8/25

This article focuses on the linear inductance model-based sensorless position estimation for medium- and low-speed switched reluctance motor (SRM) drive. With the developed model reshaping schemes, the position estimation error caused by magnetic saturation is effectively suppressed. Given the specific constant sum characteristics of phase inductances under unsaturation condition, a virtual inductance construction strategy is specially proposed for three-phase SRMs to avoid the impact of magnetic saturation, which shows excellent enforceability and simplicity. On the other hand, to meet the requirement of strong portability for three-phase and above multiphase SRMs, an equivalent position triangle is built in real time to recognize the position error caused by magnetic saturation and assist in a novel self-calibration technique of the inductance linearity. Both the reshaping schemes can achieve the high …

See List of Professors in Chun Gan University(Huazhong University of Science and Technology)

Chun Gan FAQs

What is Chun Gan's h-index at Huazhong University of Science and Technology?

The h-index of Chun Gan has been 35 since 2020 and 36 in total.

What are Chun Gan's top articles?

The articles with the titles of

Cooperative Current Ripple Reduction Strategy for Three-Phase Inverter With Flexible Zero Vector Redistribution

Inductance Calculation and Analysis of Axial-Flux Slotless Surface-mounted Permanent Magnet Machine with Equidirectional Toroidal Winding

Optimized Nine-Switch Converter-Fed Flux-Modulated Doubly-Salient Reluctance Motor Drive With Integrated ZSC Regulation Ability Considering Efficiency Improvement

Variable Winding-Based Highly-Integrated Electric-Drive-Reconstructed System for SRM-Based EVs

Few-Shot Learning with Residual Current for EV Inverter Fault Diagnosis of EV Powertrain

Analytical Inductance Modeling of Segmental Rotor Switched Reluctance Motor with Single-Tooth Windings

Modified Voltage Vector Modulation Strategy for Open-Winding FMDRM Drives With Switching Action Reduction Capable of ZSV Regulation

Optimization Design of a Novel Permanent Magnet Linear-rotary Generator for Offshore Wind-wave Combined Energy Conversion Based on Multi-Attribute Decision Making

...

are the top articles of Chun Gan at Huazhong University of Science and Technology.

What are Chun Gan's research interests?

The research interests of Chun Gan are: Electrical motor drives, electical motor design, high efficiency power converters, electric vechiles

What is Chun Gan's total number of citations?

Chun Gan has 3,698 citations in total.

What are the co-authors of Chun Gan?

The co-authors of Chun Gan are Josep M. Guerrero, Wen-Ping Cao.

    Co-Authors

    H-index: 147
    Josep M. Guerrero

    Josep M. Guerrero

    Aalborg Universitet

    H-index: 46
    Wen-Ping Cao

    Wen-Ping Cao

    Aston University

    academic-engine

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