Zeyuan Liu

Trade-driven diffusion of carbon dioxide removal exacerbates the decrease in global health co-benefits from the Paris Agreement

Kai Fang, Zeyuan Liu, Yu Zhang, Jeffrey Ampah et autres

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Direct power control of the two-stage battery charger with virtual synchronous machine mechanism

Jun Cai, Xin Cao, Xin Zhang, Zeyuan Liu

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Sensorless Finite-Control Set Model Predictive Torque Control With Minimized Switching States for SRM Drives

Jun Cai, Zeyuan Liu, Shoujun Song, Xin Li Cao

In this paper, a sensorless finite-control set model predictive torque control (FCS-MPTC) strategy is proposed for switched reluctance motor (SRM) drives. To minimize the switching vector candidates and relieve the computing pressure in traditional MPTC methods, the flux linkage closed loop is …

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Current Measurement and Reconstruction Control for a Four-Phase SRM Drive With Two Current Sensors

Jun Cai, Jiuyu Zhao, Zeyuan Liu, Wen Ding et autres

In this paper, a current measurement and reconstruction control scheme for a four-phase switched reluctance motor (SRM) drive system with two current sensors is proposed. To implement the proposed scheme, following steps are included. Firstly, a compact power converter topology with modified …

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Model predictive torque control for SRM with switching states restructuration and online torque compensation

Jun Cai, Zeyuan Liu, Shoujun Song, Xin Li Cao et autres

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Seismic Performance of Embedded GFRP Tube-Concrete Composite Exterior Beam-Column Joints

Yulei Bai, Zeyuan Liu, Yu Xing, Xiao Zhang et autres

To address issues such as construction congestion， concrete casting defects， and shear-induced brittle failure in the core region of traditional concrete beam–column joints under severe earthquakes， this study proposes a novel joint system incorporating glass fiber-reinforced polymer （GFRP） tubes combined with high-ductility …

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A Three-Degree-of-Freedom Bearingless Switched Reluctance Motor With Biased Permanent Magnets

Zeyuan Liu, Jun Cai, Xiaoyuan Chen

A traditional bearingless switched reluctance motor (BSRM) can only achieve two-degree-of-freedom (2DOF) radial levitation of its rotor shaft. In this article, an 18/16-pole three-DOF (3DOF) BSRM with biased permanent magnets (PMs) are proposed, which allows both axial and radial levitation, and its …

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Torque and Force Sharing Functions-Based Predictive Current Control for 12/8 BSRMWR

Yang Yan, Zeyuan Liu, Chengzi Liu

Due to insufficient current tracking capability, traditional control methods generate significant torque and levitation force ripples, which are detrimental to system stability. This article proposes a novel predictive current control (PCC) algorithm by integrating the structural characteristics of a 12/8 bearingless switched …

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Cost-Function Extremum Seeking Based Model Predictive Torque Control of PMSM With Sensorless Position Estimation

Jun Cai, Yuhan Gu, Zeyuan Liu, Shoujun Song

In this article, a cost-function extremum seeking-based model prediction torque control (CES-MPTC) method of permanent magnet synchronous motor with sensorless position estimation is proposed. First, as the predictive torque and flux linkage are the functions of theDQ-axis voltage components, once the partial …

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Seismic performance and shear strength of HECC/RC beam-column joints with simplified reinforcement

Yu‐Lei Bai, Wei-Hao Mao, Zeyuan Liu, Yao Ding

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Phase Current Reconstruction and Suppression in a Single Current Sensor Measurement-Based Four-Phase SRM-Integrated Drive System

Jun Cai, Zeyuan Liu, Shoujun Song

In this article, a compact single current sensor measurement-based four-phase switched reluctance motor (SRM)-integrated drive system is developed. Based on the current measurement characteristics of this drive system, the phase current reconstruction and demagnetization current suppression strategies are proposed. To ensure reliable …

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Decoupled Topologies and Radial Levitation Control of a Novel Permanent Magnet Biased Bearingless Switched Reluctance Motor

Zeyuan Liu, Wu Xingcheng, Jun Cai, Yang Yan et autres

The coupling between torque and radial force, and between the two radial forces is detrimental to the efficient control and performance improvement of the bearingless switched reluctance motor (BSRM). In the article, an 18/16-pole permanent magnet (PM) biased BSRM with radial force …

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