Dianguo XU

Dianguo XU

Harbin Institute of Technology

H-index: 78

Asia-China

About Dianguo XU

Dianguo XU, With an exceptional h-index of 78 and a recent h-index of 61 (since 2020), a distinguished researcher at Harbin Institute of Technology, specializes in the field of Electrical Engineering.

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

Optimization of Current Dynamic Performance and Torque Harmonic for Induction Motor Field-Weakening Control under Hexagon Voltage Extension

A Closed-Loop Voltage Model Observer for Sensorless Induction Motor Drives Based on the Orthogonality and Sliding-Mode Technique

A High Step-up Partial Power Regulated DC–DC Converter with Zero Input Current Ripple and Wide Input Range

Power-Model-Based Adaptive Overmodulation Scheme for Field-Weakening Control of PMSM

Overmodulation Voltage Boundary Adaptation-Based Field Weakening Strategy for High-Speed SPMSM Drives

An Adaptive Fixed-Time Cascaded Distributed Control for Bipolar-Type DC Microgrids Considering Time Delays

Analysis and Design of a 6.78 M Wireless Power Transfer System With Strong Misalignment Tolerance Based on Simplified Impedance Trajectory Tracing

Coupled Modeling and Design Principles of Limited-Angle Vibration Motors for High-Frequency Reciprocating Rotation

Dianguo XU Information

University

Harbin Institute of Technology

Position

___

Citations(all)

30018

Citations(since 2020)

17126

Cited By

20678

hIndex(all)

78

hIndex(since 2020)

61

i10Index(all)

652

i10Index(since 2020)

376

Email

University Profile Page

Harbin Institute of Technology

Dianguo XU Skills & Research Interests

Electrical Engineering

Top articles of Dianguo XU

Optimization of Current Dynamic Performance and Torque Harmonic for Induction Motor Field-Weakening Control under Hexagon Voltage Extension

Authors

Jing Zhang,Xu Zhang,Yong Yu,Bo Wang,Dianguo Xu

Journal

IEEE Transactions on Power Electronics

Published Date

2024/2/5

The hexagon voltage extension can increase the maximum output torque of the induction motor in field-weakening region. However, nonlinearity voltage and insufficient voltage margin under hexagon voltage operation can lead to torque harmonics and current dynamic performance degradation, respectively. Focusing on these two problems, this paper has quantitatively analyzed the transient voltage vector and the voltage margin requirements when current changes dynamically. And the relation between the torque harmonic and the fundamental output torque is derived in multiple reference frames. Based on the analysis, both the dynamic problem and the harmonic problem under hexagon voltage extension are attributed to the non-adjustable voltage control issue. To solve both problems simultaneously, this paper proposes the optimization structure for multi-state voltage control. The current, the speed, and the …

A Closed-Loop Voltage Model Observer for Sensorless Induction Motor Drives Based on the Orthogonality and Sliding-Mode Technique

Authors

Tianqing Wang,Bo Wang,Yong Yu,Dianguo Xu

Journal

IEEE Transactions on Industrial Electronics

Published Date

2024/3/25

The sliding-mode observer (SMO)-based voltage model (VM) design is an effective way to improve the robustness of speed estimation in sensorless induction motor (IM) drives. However, this article reveals that the existing SMO-based VM is unable to remove the dc offset present in the rotor flux derivative, resulting in the integral drift problem of rotor flux estimation. To address this problem, this article proposes a SMO-based closed-loop VM observer based on the orthogonality between the rotor flux and its derivative. First, by introducing the orthogonality into the design of observer structure, the rotor flux estimation can be incorporated into the stator current observer. Second, by ensuring the stability of current observer, the SMO law can compensate the deviation between the estimated rotor flux and the ideal orthogonality. Finally, the SMO law will act as the feedback term to remove the dc offset in the rotor flux …

A High Step-up Partial Power Regulated DC–DC Converter with Zero Input Current Ripple and Wide Input Range

Authors

Xikun Sang,Shanshan Gao,Yijie Wang,Dianguo Xu

Journal

IEEE Transactions on Industrial Electronics

Published Date

2024/4/18

A current-fed high step-up dc–dc converter with a post-stage partial power voltage regulator is proposed in this article. Two current-fed DCXs are included in the proposed converter and both operate at the unregulated state to achieve a constant conversion ratio. An auxiliary dc–dc converter is introduced for the system output voltage regulation under a wide input range through simple PWM control. Zero input current ripple of the system is realized by the complementary operation state of two DCXs over the entire operating range. The soft switching properties can be achieved for all the power devices in the system. Each converter in the system only processes a part of the total power, resulting in lower device stress and power losses. The operating principle, voltage regulation scheme, parameters design consideration and the small-signal modeling are introduced in detail. A comprehensive comparison is conducted …

Power-Model-Based Adaptive Overmodulation Scheme for Field-Weakening Control of PMSM

Authors

Linzhi Wang,Yong Yu,Bo Wang,Dianguo Xu

Journal

IEEE Transactions on Industrial Electronics

Published Date

2024/1/15

The field-weakening control can realize the operation above the base speed of a permanent magnet synchronous motor (PMSM), but the torque capacity is still limited by the power of the inverter. To further improve the torque capacity, an overmodulation technique is applied to fully utilize the dc bus voltage ( u dc ) of the inverter. However, the reference voltage of the field-weakening loop needs to be set to 2 u dc /π in the conventional overmodulation algorithm, leading to serious current and torque harmonics. To address this problem, in this article, an adaptive overmodulation scheme is proposed to coordinate the reference voltage according to the required operation condition rather than the constant 2 u dc /π. To determine the scale of reference voltage, a power model is established to monitor the working condition of the motor, including speed and torque. Then, a reasonable voltage compensation is added to the …

Overmodulation Voltage Boundary Adaptation-Based Field Weakening Strategy for High-Speed SPMSM Drives

Authors

Runze Jing,Qiwei Wang,Gaolin Wang,Lianghong Zhu,Guoqiang Zhang,Dianguo Xu

Journal

IEEE Transactions on Industrial Electronics

Published Date

2024/3/22

The overmodulation (OVM) strategy can improve the modulation index (MI) of the output voltage and expand the speed and torque range in the field weakening (FW) region. However, the motor current harmonics would be increased. To solve this issue, this article proposes an OVM voltage boundary adaptation-based FW strategy for high-speed permanent magnet synchronous motor (PMSM) drives. By analyzing the frequency spectrum of the OVM output voltage, an FW current model containing the harmonics is established. The adaptation strategy between different voltage boundaries is adopted in the dynamic state by inserting more continuous voltage vectors. The adaptive regulation of the optimized voltage boundary in the steady state is proposed by increasing the utilization of the dc-bus voltage considering the THD limitation of the phase current. The motor operating state is judged by the speed and current …

An Adaptive Fixed-Time Cascaded Distributed Control for Bipolar-Type DC Microgrids Considering Time Delays

Authors

Panbao Wang,Zehua Zhang,Jiayu Yan,Wei Wang,Dianguo Xu

Journal

IEEE Transactions on Industrial Electronics

Published Date

2024/4/10

In this article, an adaptive fixed-time cascaded distributed control is proposed for bipolar DC microgrid (MG) to achieve current sharing and voltage regulation at fixed time while eliminating the accuracy deviation effect of time delay. Compared with parallel distributed control based on double information exchange, the proposed cascade controller releases space through local voltage compensation, simplifies the controller structure, and saves computational resources. In order to enhance the time delay resilience and regulation sensitivity of the cascade control, an additional intermediate variable information exchange and proportional control are introduced. Based on this, the fixed-time algorithm is introduced into the cascade control to realize the objective fixed-time convergence and an adaptive rule based on local information is designed to select the control gain to enhance practicality. In addition, the stability of …

Analysis and Design of a 6.78 M Wireless Power Transfer System With Strong Misalignment Tolerance Based on Simplified Impedance Trajectory Tracing

Authors

Zhan Sun,Guangliang Hu,Gang Li,Yijie Wang,Yueshi Guan,Dianguo Xu

Journal

IEEE Transactions on Industrial Electronics

Published Date

2024/1/8

Megahertz wireless power transfer (WPT) systems are sensitive to circuit parameters, where coupling coefficient k variations can directly and significantly affect the system dc–dc gain and efficiency. This letter proposes a simplified impedance trajectory tracing (SITT) design method, which makes full use of the respective advantages of static impedance compression and dynamic matching network. While ensuring high power density, it improves the robustness of the system for strong misalignment tolerance. Closed loop and hysteretic control are adopted to ensure stable constant power output, and integrated inductors are also fabricated. When k varies from 0.1 to 0.4, the system efficiency is always higher than 80%, and even reaches 88.5%.

Coupled Modeling and Design Principles of Limited-Angle Vibration Motors for High-Frequency Reciprocating Rotation

Authors

Yiyang Xu,Hanlin Zhan,Hui Yang,Di Wu,Dianguo Xu

Journal

IEEE Transactions on Industrial Electronics

Published Date

2024/2/14

In this article, a new type of electric machine called limited-angle vibration motor (LAVM) for the motion of high-frequency reciprocating rotation is proposed. The corresponding coupled model, resonance principle, and design guidelines are established. Contrary to the conventional limited-angle motors, the LAVM mainly utilizes cogging torque within a limited angle and, thus, can be restored as an electromagnetic spring. By proposing the linear torque models, an analytical model coupling the output torque with the mechanical load is derived, which explains the resonance phenomenon occurring in LAVMs, finding that the maximum vibration amplitude and efficiency can be achieved at resonance frequency, and being verified by the field-circuit-coupled finite-element simulation. Guided by analytical results from resonance principles, a design method, supporting matching the motor with target reciprocating …

Integrated Observer-Based Terminal Sliding-Mode Speed Controller for PMSM Drives Considering Multi-Source Disturbances

Authors

Minghe Tian,Tianqing Wang,Yong Yu,Qinghua Dong,Bo Wang,Dianguo Xu

Journal

IEEE Transactions on Power Electronics

Published Date

2024/4/4

There are multi-source disturbances in permanent magnet synchronous motor (PMSM) drives, which can lead to speed fluctuations, deteriorating the speed control performance. The existing terminal sliding mode controller (TSMC) methods cannot achieve the desired control performance when they are applied as the speed controller. This is because these methods do not overcome the inherent problems of the traditional TSMC, such as the chattering phenomenon, differential calculation, etc. To solve this problem, this paper proposes an integrated observer- based TSMC for the speed regulation of PMSM drives. First, a TSMC is proposed. Then, an error-based extended state observer with generalized integrators is proposed and it is introduced to the proposed TSMC. In the proposed scheme, the proposed observer is employed to estimate the multi-source disturbances, which are adapted to the TSMC to …

Simultaneous Wireless Power and Data Transfer System With Full-Duplex MIMO Communication Channels for Underwater Applications

Authors

Zhen Yang,Chun Gan,Haochen Shi,Kai Ni,Ronghai Qu

Published Date

2023/11/5

This paper presents a novel method for energy modulation simultaneous wireless power and data transfer (EM-SWPDT) by partial current modulation. The system model is built in MATLAB/Simulink to verify the proposed modulation and demodulation strategy. It realizes a reverse data transmission rate of 25 kbps with a small load voltage drop, and additional auxiliary circuits such as bidirectional switches and cascade circuits are omitted. The research in this paper has certain practical significance for the system design and development of EM-SWPDT technologies.

Adaptive Step-Size Predictive PLL based Rotor Position Estimation Method for Sensorless IPMSM Drives

Authors

Guoqiang Zhang,Yunhao Yan,Qiwei Wang,Dawei Ding,Gaolin Wang,Li Ding,Yunwei Li,Dianguo Xu

Journal

IEEE Transactions on Power Electronics

Published Date

2024/2/13

The fixed-gain position observer for sensorless interior permanent magnet synchronous motor (IPMSM) drives requires repeated trials for parameter tuning and has poor dynamic response capability. A novel adaptive step-size predictive phase-locked loop (ASS-PPLL) based rotor position estimation method is proposed to improve dynamic performance in this paper. A cost function using position tracking error decoupled from a high-frequency current response through a high-frequency square-wave injection is established. In addition, the step-size and direction are automatically adjusted by the pre-defined cost function to speed up the iterative search for an optimal rotor position estimate in a finite position set. Compared with the fixedgain observers, the proposed ASS-PPLL effectively improves dynamic performance without a complex and time-consuming parameter tuning process. Compared with the …

A Minimum-Order BEMF Observer for DC-Bias Elimination of Position-Sensorless PMSM Drives Using Backstepping Design

Authors

Pengcheng Du,Bo Wang,Dianguo Xu

Journal

IEEE Transactions on Industrial Electronics

Published Date

2024/4/3

The back electromotive force (BEMF) observer is an effective model-based method for the permanent magnet synchronous motor (PMSM) sensorless drive in medium- and high-speed range. However, the conventional BEMF observers have inherent defect in dc-bias elimination, resulting in the fundamental frequency fluctuation of the estimated position. To address the problems, a minimum-order BEMF observer is proposed using the backstepping design method. First, an expected transfer function is designed to realize the band-stop elimination on dc-bias. Then, the backstepping design method is used to obtain the observer state equation, which is the minimum-order time-domain implementation of the equivalent transfer function. Compared with the conventional reduced-order observer, the elimination capability on dc-bias is enhanced of the studied observer. Due to directly estimating the BEMF without …

Enhanced One Degree-of-Freedom ADRC with Sampled-Data Iterative Learning Controller for PMSM Uncertain Speed Fluctuations Suppression

Authors

Minghe Tian,Bo Wang,Yong Yu,Qinghua Dong,Dianguo Xu

Journal

IEEE Transactions on Transportation Electrification

Published Date

2024/1/8

The permanent magnet synchronous motor (PMSM) control system is expected to output a smooth and stable speed even in the presence of uncertain periodic and aperiodic disturbances. To accomplish this goal, an enhanced one degree-of-freedom (DOF) active disturbance rejection controller (ADRC) with sampled-data iterative learning controller is proposed for the speed loop of PMSM drives to suppress the uncertain periodic and aperiodic disturbances. First, through a comparative analysis of two recently proposed 1-DOF ADRC schemes, a scheme with superior dynamic response and anti-disturbance performances is chosen for deployment as the PMSM speed controller. It retains the anti-disturbance performance of the traditional 2-DOF ADRC to the aperiodic disturbance. Then, in response to its limited effectiveness in attenuating uncertain periodic disturbances in the speed loop, the sampled-data iterative …

Design of Lumped Disturbance Observer in Current Loop of IPMSM Based on Recursive Integral Sliding Mode Surface

Authors

Yongxiao Teng,Qiang Gao,Xuehan Chen,Dianguo Xu

Journal

Energies

Published Date

2024/2/9

To overcome the problem of current control effect being reduced by unideal factors in a motor control system, such as motor parameter variation, inverter dead time, nonlinearity of the system, etc., a sliding mode disturbance observer for an interior permanent magnet synchronous motor is proposed in this paper. The model of an interior permanent magnet synchronous motor with unideal factors is designed, and the unideal factors are unified into lumped disturbances of motor stator voltage. Then, the observer for lumped disturbance is designed. A recursive integral sliding surface is used to replace the terminal sliding surface to avoid the noise sensitivity and singularity problem of the traditional terminal sliding mode observer. The observer can estimate the lumped disturbance of the current loop without relying on the accurate system model in finite time. Moreover, the structure of the current loop does not need to be adjusted while using the observer to observe and compensate for disturbances. Experiments are carried out to verify the effectiveness of the proposed observer.

A novel high-misalignment tolerant magnetic coupler for ipt system with concentrated magnetic flux and counteracting coil

Authors

Kang Wu,Yijie Wang,Xiufang Liu,Jianwei Mai,Dianguo Xu

Journal

IEEE Transactions on Industry Applications

Published Date

2024/4/2

The capability of misalignment tolerance between the primary and secondary coils in an inductive power transfer system is vital. This paper proposes a novel coupling structure composed of a solenoid and a planar square coil with a third coil (SPS-TC) that can significantly improve the misalignment tolerance of couplers. The novelty of SPS-TC is the combination of concentrated magnetic fields and reverse magnetic fields. The proposed SPS-TC has an excellent characteristic that when coils are misaligned in the horizontal direction, the coupling coefficient varies within a very small range. A 1-kW prototype is fabricated. The experimental results show that when the horizontal misaligned distance does not exceed 37.5% of the coil size, the output voltage variation range is extremely small, and the minimum system efficiency is 90.12%. The benefits of SPS-TC are a smaller outer side length and excellent horizontal …

A Rotor Position Estimation Scheme Using Inherent Excitation Source for Finite-Control Set Model Predictive Control in Low-Speed Region

Authors

Qinghua Dong,Bo Wang,Yong Yu,Minghe Tian,Dianguo Xu

Journal

IEEE Transactions on Industrial Electronics

Published Date

2024/4/29

The finite-control-set model predictive control (FCS-MPC) is a promising control method for permanent magnet synchronous motor (PMSM) drives. However, its discrete nature poses problems in sensorless control for low-speed operation. Since the cost function of FCS-MPC directly selects the switching states, the conventional injection methods relying on modulators are difficult to operate in FCS-MPC. To address this problem, a rotor position estimation scheme for low-speed operation is designed by the inherent excitation source of FCS-MPC. First, the estimated rotor position is extracted from the error between the predicted and sampled current slopes. Second, the compensation of parameter perturbation is conducted on the proposed position extraction method, which can improve the parameter immunity. In addition, the cost function is modified to match the position extraction method in the low-speed and light …

A Novel Posistion Estimation Strategy for Pulsating Injection Based Sensorless PMSM Drives

Authors

Sisi Li,Guoqiang Zhang,Hua Yang,Shitao Song,Gaolin Wang,Dianguo Xu

Published Date

2023/10/16

A novel position estimation strategy for high-frequency (HF) pulsating injection based position sensorless permanent magnet synchronous machine (PMSM) drives is proposed in this paper. The method performs the inverse tangent of HF response currents to realize the decoupling of current information and the extraction of position tracking error can be obtained simply, which reduces the use of low-pass filters. In addition, there is no need to introduce additional demodulation signals, which simplifies the adjustment process. Finally, the feasibility and effectiveness of the proposed scheme are verified on a 2.2-kW sensorless PMSM drive.

A Family of DC-DC Converters Based on Y-Source Impedance Network and Boost Module

Authors

Tingting Yao,Yueshi Guan,Yijie Wang,Marco Antonio Dalla Costa,José Marcos Alonso,Dianguo Xu,Wei Wang

Journal

IEEE Transactions on Industry Applications

Published Date

2023/4/20

A novel family of high-gain converters based on the Y-source impedance network is proposed in this paper, providing novel solutions to high voltage gain applications. Compared with the traditional improved Y-source topology, the proposed new topologies relocate the switch from the output side to the input side, which effectively reduces the stress of the switching device, and the topology combines different boost modules, which effectively improves the boost ability. In order to show the characteristics of the proposed topologies, the operating principles and analyses are given detailed in this paper. Experimental results verify the feasibility of the proposed converters.

Active-Damping Based Field Weakening Control Strategy with Voltage Angle Regulation for High-Speed SPMSM Drive

Authors

Runze Jing,Dawei Ding,Guoqiang Zhang,Qiwei Wang,Gaolin Wang,Dianguo Xu

Journal

IEEE Transactions on Industrial Electronics

Published Date

2023/4/11

The field-weakening (FW) control strategy with voltage angle regulation has the advantages of fast speed and current response by directly decoupling the voltages. For suppressing the current harmonics, this article proposes a novel active-damping-based FW control strategy for high-speed surface-mounted permanent magnet synchronous motor (SPMSM) drives. The resonant issue in the voltage-angle regulated system is analyzed, and the d -axis current is adopted to compensate the voltage angle, which introduces the additional impendence at the resonant frequency to reduce the d-q axis current harmonics. An offline coefficient design method based on the frequency characteristic and step response is proposed to construct the contour map seeking for optimal coefficients, which achieves significant reductions on current harmonics and improves the robustness of the proposed method on mismatches of motor …

A Master-Slave-Structure Position Observer for Multi-Harmonics Suppression in Sensorless PMSM Drives

Authors

Bo Wang,Pengcheng Du,Minghe Tian,Dianguo Xu

Journal

IEEE Transactions on Industrial Electronics

Published Date

2023/6/5

Due to the influence of inverter nonlinearity and nonideal spatial flux, it inevitably exists the back electromotive force (BEMF) harmonics in permanent magnet synchronous motor (PMSM) drives, affecting the accuracy of model-based position-sensorless control. Although different schemes have been studied to suppress the BEMF harmonics, it is still challenging to alleviate the contradiction between harmonics suppression effect and structure complexity. To address this problem, a master-slave-structure position observer is proposed for multi-harmonics suppression in this article. With the help of the master-slave structure, the fundamental frequency component of the BEMF is extracted as the output of the studied observer, realizing the separation from the harmonic components. The number of integrators can be reduced by half with complex-coefficient resonators instead of real-coefficient resonators. Thus, the …

See List of Professors in Dianguo XU University(Harbin Institute of Technology)

Dianguo XU FAQs

What is Dianguo XU's h-index at Harbin Institute of Technology?

The h-index of Dianguo XU has been 61 since 2020 and 78 in total.

What are Dianguo XU's top articles?

The articles with the titles of

Optimization of Current Dynamic Performance and Torque Harmonic for Induction Motor Field-Weakening Control under Hexagon Voltage Extension

A Closed-Loop Voltage Model Observer for Sensorless Induction Motor Drives Based on the Orthogonality and Sliding-Mode Technique

A High Step-up Partial Power Regulated DC–DC Converter with Zero Input Current Ripple and Wide Input Range

Power-Model-Based Adaptive Overmodulation Scheme for Field-Weakening Control of PMSM

Overmodulation Voltage Boundary Adaptation-Based Field Weakening Strategy for High-Speed SPMSM Drives

An Adaptive Fixed-Time Cascaded Distributed Control for Bipolar-Type DC Microgrids Considering Time Delays

Analysis and Design of a 6.78 M Wireless Power Transfer System With Strong Misalignment Tolerance Based on Simplified Impedance Trajectory Tracing

Coupled Modeling and Design Principles of Limited-Angle Vibration Motors for High-Frequency Reciprocating Rotation

...

are the top articles of Dianguo XU at Harbin Institute of Technology.

What are Dianguo XU's research interests?

The research interests of Dianguo XU are: Electrical Engineering

What is Dianguo XU's total number of citations?

Dianguo XU has 30,018 citations in total.

What are the co-authors of Dianguo XU?

The co-authors of Dianguo XU are Frede Blaabjerg, Xiongfei Wang, Xiaonan Lu, Wang Yan, BINBIN LI 李彬彬, Rui Li.

    Co-Authors

    H-index: 197
    Frede Blaabjerg

    Frede Blaabjerg

    Aalborg Universitet

    H-index: 70
    Xiongfei Wang

    Xiongfei Wang

    Aalborg Universitet

    H-index: 36
    Xiaonan Lu

    Xiaonan Lu

    Temple University

    H-index: 23
    Wang Yan

    Wang Yan

    Harbin Institute of Technology

    H-index: 23
    BINBIN LI 李彬彬

    BINBIN LI 李彬彬

    Harbin Institute of Technology

    H-index: 23
    Rui Li

    Rui Li

    University of Strathclyde

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