Wenyong Guo

Beijing Jiaotong University

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Shaotao Dai

Fujian Normal University

Liye Xiao

Chinese Academy of Sciences

Zhiqin Zhu

Chongqing University of Posts and Telecommunications

Liangzhen Lin

Institute of Electrical Engineering

Xi Xu

Southern Medical University

Wenju Sang

Institute of Electrical Engineering

Naihao Song

Chinese Academy of Sciences

Yuping Teng

Chinese Academy of Sciences

Chenyu Tian

Sichuan Agricultural University

Qingquan Qiu

Chinese Academy of Sciences

Cooperative Institutions

Chinese Academy of Sciences

Institute of Electrical Engineering

University of Chinese Academy of Sciences

National Laboratory for Superconductivity

Beijing Jiaotong University

North China Electric Power University

Nankai University

Jilin University

Southeast University

Zhejiang University

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Evaluation of the Performance of BTFCLs for Enhancing LVRT Capability of DFIG

IEEE Transactions on Power Electronics (2014)

Wenyong Guo Liye Xiao Shaotao Dai Xi Xu Yuanhe Li

Performance of three kinds of bridge-type fault current limiters (BTFCLs) for enhancing low-voltage-ride-through (LVRT) capability of DFIG is evaluated in this paper. The common BTFCL can effectively enhance the LVRT capability of DFIG. However, the fault-current-limiting inductor (FCLI) is periodically inserted into the stator circuit under normal operation for compensating power losses of the FCLI. The periodically insertion of the FCLI induces stator voltage spikes, which causes significant stator flux and electromagnetic torque oscillations. One feasible way to solve this problem is to use an additional current-regulating circuit (CRC). However, the additional CRC increases hardware cost, reduces reliability of the whole system, and induces more power losses. To solve this problem, a BTFCL with bypass resistor (BTFCL-BR) is presented. The BR absorbs the majority of the current harmonics during normal operation and eliminates the stator voltage spikes. The flux and electromagnetic torque oscillations can thus be significantly reduced. The performance of three kinds of BTFCLs is evaluated by simulation and experimental studies on a typical 1.5 MW wind turbine driven DFIG system and a 2 kW DFIG prototype. By simulation and experimental evaluations, it seems that the BTFCL-BR approach is the most promising solutions among the three kinds of BTFCLs.

10.1109/tpel.2014.2340852

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Citations (49)

A new method calculating load balance of sliding bearing by using neural network PID algorithm

Vibroengineering PROCEDIA (2018)

Wei Wei Wenyong Guo Jianggui Han Xinyue Wu

Aiming at low efficiency of existing sliding bearing load balance calculation, a new method that based on neural network proportional-integral-derivative (PID) algorithm is proposed for the first time, in which a compound control algorithm combining neural network and PID algorithm is applied. In this new method, the load error is taken as the input of the system, and the eccentricity of the bearing is used as the input of the controller, and the output of the system is the oil film force of the bearing. Comparing with traditional method, calculation results show that: the number of iterations calculated by neural network PID algorithm is less than traditional one and has higher efficiency and stronger adaptability under different loads.

Adaptability

Eccentricity (behavior)

10.21595/vp.2018.20351

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A Control Bandwidth Optimized Active Damping Scheme for LC and LCL Filter-Based Converters

IEEE Access (2023)

Wenyong Guo Tianxiang Chen Alex Q. Huang

Control bandwidth and damping performance are two key specifications for high-order LC and LCL filter-based converters. The damping of high-order filter-based converters has been extensively studied. However, the control bandwidth issue was ignored. The quantitative relationship between the control gains and bandwidth is still unclear. Moreover, the delay compensator was designed independently without considering the interactions with the main controller. This paper proposes a control bandwidth-optimized active damping control strategy for the LC and LCL filter-based converters to overcome these shortcomings. With the proposed generalized controller, the close loop transfer function of the N ^th order filter-based converter can be simplified to an N ^th order low pass filter with an adjustable cutoff frequency. This greatly simplifies the control bandwidth optimization. To alleviate the negative influence of the computational delay on the control bandwidth, a novel delay compensator is proposed. To reach an overall optimized control performance, the particle swarm optimization (PSO) method is used to optimize the controller and delay compensator parameters simultaneously to realize both high control bandwidth and good damping performance. Experimental results verify the effectiveness of the proposed novel controller.

Cutoff frequency

10.1109/access.2023.3249238

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Citations (6)

Development of the World's First HTS Power Substation

IEEE Transactions on Applied Superconductivity (2011)

Liye Xiao Shaotao Dai Liangzhen Lin Jinye Zhang Wenyong Guo

With the increasing depletion of fossil fuels and growing environmental pressure, the mankind has got known the need to vigorously develop the renewable energy and the energy-saving technology. The high Tc superconducting (HTS) power technology will be very helpful to enhance the stability, reliability, and efficiency and transmission capacity of the power grid which would be dominated by the renewable energy. In this paper, we will report the installation and operation of a 10 kV HTS power substation which includes a 75 m/1.5 kA HTS power cable, a 10 kV/1.5 kA HTS fault current limiter, a 1 MJ/0.5 MVA high Tc SMES and a 630 kVA/10 kV/0.4 kV HTS power transformer.

Limiter

Power transmission

10.1109/tasc.2011.2176089

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Citations (36)

Optimal power smoothing control for superconducting fault current limiter-magnetic energy storage system

Cryogenics (2021)

Wenyong Guo

Fault current limiter

Limiter

Smoothing

10.1016/j.cryogenics.2021.103296

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Citations (4)

A New High-speed Drive Topology of Wide-bandgap Power MOSFET Based on Dynamic Procedure Model

IOP Conference Series Materials Science and Engineering (2019)

Chuang Zhao Wenyong Guo Wenhan Zha Shaoqun Cao Benkang Yang

Abstract More and more attention is being drawn on the wide-bandgap power MOSFET, for its performance is far superior to the traditional silicon MOSFET. Driving technology is one of the key factors that influence the performance of device. In this paper, a high-speed drive circuit topology is proposed. The principle of the improved drive circuit is simple and easy to be implemented. Compared with the traditional design, it can reduce the switching time while maintaining the original driving performance.

Power MOSFET

Switching time

10.1088/1757-899x/677/5/052065

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Development and Demonstration of a 1 MJ High-Tc SMES

IEEE Transactions on Applied Superconductivity (2011)

Shaotao Dai Liye Xiao Zikai Wang Wenyong Guo Jingye Zhang

A superconducting magnetic energy storage system (SMES), with stored energy of 1 MJ and compensation power of 0.5 MVA, has been developed successfully, and now is operating at the world's first superconducting power substation at Baiyin National High-Tech Industrial Development Zone, Gansu Province, China. The SMES employs a high Tc superconducting magnet, which consists of 44 pancakes, operates at 4.2 K in liquid helium, and is cooled down by 4 G-M cryo-coolers. The SMES connects to a 10.5 kV power grid by the use of a power conversion system. Since 16 February, 2011, the SMES has been operating reliably, and providing good-quality power for three companies.

Power grid

10.1109/tasc.2011.2178971

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Citations (22)

A Novel Flywheel Frequency and Voltage Stabilization System

Wenyong Guo Ruiqi Min Gang Xu JianYu Lan Zeyin He

Flywheel

10.2139/ssrn.5056394

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A Real-Time Measuring and Control System for the World's First HTS Power Substation

IEEE Transactions on Applied Superconductivity (2013)

Zhiqin Zhu Shaotao Dai Liye Xiao Jingye Zhang Yuping Teng

The world's first high-temperature superconductor (HTS) power substation (the substation) for the only power distribution grade has been successfully developed in live grid in 2011 in Baiyin, Gansu Province of China. This 10 kV HTS power substation is an integration of 75 m/1.5 kA HTS power cable, 10 kV/1.5 kA HTS fault current limiter, 1 MJ/0.5 MVA high $T_{\rm c}$ superconducting magnetic energy storage and 630 kVA/10 kV/0.4 kV HTS power transformer. The HTS power substation is operated automatically by a real-time measuring and control system, and it is not necessary to have anyone on duty. Software is developed by using LabView program. The cooling system providing a low-temperature environment for the cryogenic devices is an independent system, and is also the key part to ensure the run of the substation. The real-time measuring and control system for the substation, which comprehensively measures and controls the related signals of the HTS power substation, is introduced, and the controlling system for the cooling system is described in detail in this paper.

Limiter

Duty cycle

10.1109/tasc.2013.2241111

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Citations (7)

Overview and Development Progress of a 1-MVA/1-MJ Superconducting Fault Current Limiter-Magnetic Energy Storage System

IEEE Transactions on Applied Superconductivity (2016)

Wenyong Guo Jingye Zhang Naihao Song Zhiyuan Gao Tao Ma

A 1-MVA/1-MJ superconducting fault current limiter-magnetic energy storage system (SFCL-MES) is under development. The SFCL-MES is used to enhance the low voltage ride through capability and smooth the output power of the wind farm. The SFCL-MES is composed of four major components: a power controller, a superconducting coil, a cryogenic refrigeration system, and a monitoring system. This paper gives an overview of the SFCL-MES and briefly introduces the design and development progress of the four major components. Simulation results with the design parameters are also presented to evaluate the performance of the SFCL-MES.

Fault current limiter

Limiter

10.1109/tasc.2016.2516246

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Citations (24)