抢先看 | CES TEMS 2021年第2期目次及摘要

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CES Conference

CES TEMS

《中国电工技术学会电机与系统学报（英文）》(CES TEMS)是中国电工技术学会和中国科学院电工研究所共同主办、IEEE PELS学会技术支持的英文学术期刊。期刊发表国内外有关高性能电机系统、电机驱动、电力电子、可再生能源系统、电气化交通等研发及应用领域中原创、前沿学术论文。中国工程院院士马伟明担任主编，IEEE的执委Don Tan博士担任国际主编。

 Message from Editors

Deputy Editor-in-Chief:  Professor Yongchang Zhang

Guest Editors: Jose Rodriguez, Jianguo Zhu, Gaolin Wang, Fengxiang Wang, Shuying Yang, Zhonggang Yin, Feng Niu, Yong Yang, Haitao Yang

Robust Dichotomy Solution-Based Model Predictive Control for the Grid-Connected Inverters with Disturbance Observer

Authors: Huanyue Liao, Xin Zhang, Zhijun MaAbstract—This paper proposes a robust dichotomy-based model predictive control (DS-MPC) with a fixed switching frequency for the grid-connected inverter (GCI). The proposed fast dichotomy algorithm can select and deduce the optimal voltage vector dynamically through the space vector plane. Therefore, the proposed DS-MPC strategy could ensure dynamic performance and steady-state performance as well. Also, the current control robustness can be improved through DS-MPC with disturbance observer (DO) based on the extended Kalman filter (EKF). The novelty of this control is that the current control with fast dynamic response can be realized in the weak grid, even if the grid voltages are greatly distorted. Simulation and hardware experiments on the weak grid validate the effectiveness of the proposed DS-MPC with the EKF observer approach.

Model Predictive Control-Based Direct Torque Control for Matrix Converter-Fed Induction Motor with Reduced Torque Ripple

Authors: Hanbing Dan, Peng Zeng, Wenjing Xiong, Meng Wen, Mei Su, and Marco Rivera

Abstract—To reduce the torque ripple in motors resulting from the use of conventional direct torque control (DTC), a model predictive control (MPC)-based DTC strategy for a direct matrix converter-fed induction motor is proposed in this paper. Two new look-up tables are proposed, these are derived on the basis of the control of the electromagnetic torque and stator flux using all the feasible voltage vectors and their associated switching states. Finite control set model predictive control (FCS-MPC) has then been adopted to select the optimal switching state that minimizes the cost function related to the electromagnetic torque. Finally, the experimental results are shown to verify the reduced torque ripple performance of the proposed MPC-based DTC method.

A New Switching Sequences of SVPWM for Six-Phase Induction Motor with Features of Reduced Switching Losses

Authors:Haikh Mohammed Suhel, and Rakesh MauryaAbstract—In this paper, new SVPWM switching sequences for six-phase asymmetrical induction motor drives are derived with the aim to reduce inverter’s switching losses. Total three switching sequences are introduced in this paper. These sequences are derived such that the phases get continuously clamped when a current of the phases is around its peak magnitude and hence reduced switching losses are recorded. The comparative performances of these modulation techniques are studied with two existing switching sequences. Simulation, analytical and experimental results are presented. Based on these results, it is found that new switching sequences reduce switching losses effectively in dual three phase inverters.

Model Predictive Current Control with Adaptive-adjusting Timescales for PMSMs

Authors: Feng Niu, Xi Chen, Shaopo Huang, Xiaoyan Huang, Lijian Wu, Kui Li and Youtong FangAbstract—A model predictive current control (MPCC) with adaptive-adjusting method of timescales for permanent magnet synchronous motors (PMSMs) is proposed in this paper to improve the dynamic response and prediction accuracy in transient-state, while lessening the computational burden and improving the control performance in steady-state. The timescale characteristics of different parts of MPCC, such as signal sampling, prediction calculation, control output, model error correction, are analyzed, and the algorithm architecture of MPCC with multi-timescale is proposed. The difference between reference and actual speed, and the change rate of actual speed are utilized to discriminate the transient state of speed change and load change, respectively. Adaptive-adjusting method of control period and prediction stepsize are illustrated in detail after operation condition discrimination. Experimental results of a PMSM are presented to validate the effectiveness of proposed MPCC. In addition, comparative evaluation of single-step MPCC with fixed timescale and proposed MPCC is conducted, which demonstrates the superiority of proposed control strategy.

An Improved Y-source Inverter with the Capability of Absorbing Bus Voltage Spike

Authors: Xupeng Fang, Xiaoli Wang, and Shixiang Zhong

Abstract—In order to avoid the bus voltage spikes caused by leakage inductance endangering the normal operation of the inverter, based on the improved Y-source inverter, the traditional clamping structure and voltage peak absorption circuit are introduced, and a high step-up and low-voltage stress improved Y-source inverter with the capability of absorbing bus voltage spike is proposed. This topology fully utilizes the structural characteristics of the improved Y-source inverter itself, and further increases the DC-side voltage gain on the basis of ensuring the busbar voltage peak absorption capacity, while reducing the capacitor voltage stress. This paper demonstrates the superiority of the proposed topology over improved Y-source inverter topology by analyzing its working principle and voltage gain, simulation and experiment platform are constructed to perform the circuit simulation and experiment, and the correctness of the theoretical analysis of the proposed inverter and the effectiveness of the busbar voltage peak absorption capacity are verified.

MMC-MTDC Transmission System with Partially Hybrid Branches

Authors: Yongyang Chen, Shangzhi Pan, Meng Huang, Zili Zhu, Yushuang Liu, and Xiaoming ZhaAbstract—This paper proposes a hybrid submodule modular multilevel converter (MMC) topology which is suitable for multi terminal direct current (MTDC) transmission systems. Each arm of the proposed MMC topology consists of a half-bridge submodule (HBSM) branch and two parallel full-bridge submodule (FBSM) branches. Comparing with the conventional MTDC transmission system, the proposed topology can selectively block the DC fault current and isolate the corresponding fault line without expensive DC circuit breakers (DCCBs). Thus, the influence range of the DC fault can be reduced and the reliability of the power supply can be improved as well. The corresponding modulation and voltage balancing strategies are developed for the proposed hybrid MMC topology. The feasibility of the proposed topology and control strategy is verified in the MATLAB/ Simulink simulation.

Study on Electromagnetic-Fluid-Temperature Multiphysics Field Coupling Model for Drum of Mine Cable Winding Truck

Authors: Weihua Chen, Mingliang Zhou, Xiaoheng Yan, Zhengxing Li and Xiaoxue LinAbstract—Aiming at solving problems of low efficiency, low cable capacity in current 300m open-pit mine cable winding truck, a 900 m cable winding plan was proposed. In this paper, the mechanism of the thermal effect of the cable was described, and a two-dimensional axisymmetric electromagnetic-fluid-temperature multiphysics coupling model of the cable reel was established regarding the 900m cable reel as independent system. Considering the structure of the drum, the number of cable winding layers, the factors of heat conduction, heat radiation and convective heat transfer in the actual working process, the steady state analysis of the multi-physical field coupling was carried out. The sum of the losses of each part of the cable was obtained through the calculation of electromagnetic field, which was used as a heat source to calculate and analyze the temperature distribution of different layers of cable winding, as well as the temperature distribution and heat dissipation characteristics of different structures of the drum. The results show that three layers of cable winding is the best design. The lowest temperature of closed cylindrical drum is 70℃ after heat dissipation, which has obvious advantages compared with the lowest temperature of 85℃ after heat dissipation of squirrel-cage cylindrical drum. The results provide a reliable theoretical basis for the research and development of a new type of mine cable winding truck with 900 m cable capacity.

Fast Model-based Design of High Performance Permanent Magnet Machine for Next Generation Electric Propulsion for Urban Aerial Vehicle Application

Authors: Sarbajit Paul, and Junghwan ChangAbstract—Model order reduction (MOR) is considered as a good alternative to reduce the computational scale for electro-magnetic problems. The aim of this work is to introduce the use of dynamic mode decomposition (DMD) as a promising tool for MOR to analyze its effectiveness in creating a fast model-based design platform for the permanent magnet motor design for ur-ban aerial vehicles (UAVs). Using a singular value decomposition (SVD) based DMD, the design process is constructed and verified against different scenarios.

Introduction to Mesh Based Generated Lumped Parameter Models for Electromagnetic Problems

Authors: Shuo Yang, Salim Asfirane, Sami Hlioui, Smaïl Mezani, Guillaume Krebs, Yacine Amara, Georges Barakat, Mohamed Gabsi and Wei HuaAbstract—This paper is an introduction to mesh based generated reluctance network modeling. An overview of scientific works which led to the development of this approach is first presented. Basic concepts of the approach are then presented in the case of electromagnetic devices. A step-by-step procedure for coding the approach in the case of a flat linear permanent magnet machine is presented. Codes developed under MATLAB and Scilab environments are also included.

Design and Optimization of Reverse Salient Permanent Magnet Synchronous Motor Based on Controllable Leakage Flux

Authors: Longxin Du, Xiping Liu, Jiesheng Fu, Jianwei Liang, and Chaozhi HuangAbstract—In this paper, a controllable leakage flux reverse salient permanent magnet synchronous motor(CLF-RSPMSM) is designed, which has the advantages of wide speed range and low irreversible demagnetization risk. Firstly, the principle of controllable leakage flux and reverse saliency effect is introduced, and the design of the rotor flux barrier is emphatically discussed. Secondly, multiple design variables are stratified by the comprehensive sensitivity method, and the main variables are screened out. Then the relationship between the main variables and the optimization goal is discussed according to the response surface diagram. Thirdly, a sequential nonlinear programming algorithm(SNP) is used to optimize the three optimization objectives comprehensively. Finally, the electromagnetic performance of the proposed motor is compared with the initial IPM motor, the mechanical strength of the proposed rotor is analyzed, and the results verify the effectiveness of the design and optimization method of the proposed motor.

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