Zhuang Xu
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View article: Hydroelectric Unit Fault Diagnosis Based on Modified Fractional Hierarchical Fluctuation Dispersion Entropy and AdaBoost-SCN
Hydroelectric Unit Fault Diagnosis Based on Modified Fractional Hierarchical Fluctuation Dispersion Entropy and AdaBoost-SCN Open
The hydropower unit is the core of the hydropower station, and maintaining the safety and stability of the hydropower unit is the first essential priority of the operation of the hydropower station. However, the complex environment increas…
View article: A Survey on Design and Control Methodologies of High- Torque-Density Joints for Compliant Lower-Limb Exoskeleton
A Survey on Design and Control Methodologies of High- Torque-Density Joints for Compliant Lower-Limb Exoskeleton Open
The lower-limb assistance exoskeleton is increasingly being utilized in various fields due to its excellent performance in human body assistance. As a crucial component of robots, the joint is expected to be designed with a high-output tor…
View article: A Hybrid Prediction Method for Conducted EMI in AC-DC Power Converter
A Hybrid Prediction Method for Conducted EMI in AC-DC Power Converter Open
This paper proposes a hybrid prediction method for the conducted electromagnetic interference (EMI) of AC-DC power converter. Under this method, the equivalent EMI model of AC-DC converter system is established to separate interference sou…
View article: Enhancement of low-voltage ride-through capability for virtual synchronous generators based on virtual impedance voltage control
Enhancement of low-voltage ride-through capability for virtual synchronous generators based on virtual impedance voltage control Open
Virtual Synchronous Generator (VSG)-based grid-forming converters (GFC) increasingly serve as interfaces between renewable energy resources and the power grids with high penetration. Although the emulation of the characteristics of Synchro…
View article: Propagation characteristics of metro blast wave and prediction of casualty area
Propagation characteristics of metro blast wave and prediction of casualty area Open
A subway train explosion would result in serious casualties because of the narrow space and high crowd density of the subway train. No study has been conducted on the propagation of a blast wave in a narrow space as well as the secondary d…
View article: The Jacobian of a Sixth-Root-of-Unity Matroid
The Jacobian of a Sixth-Root-of-Unity Matroid Open
The Jacobian group (also called the sandpile group, Picard group, or critical group) of a graph or, more generally, of a regular matroid has been well studied. Sixth-root-of-unity matroids, also called complex unimodular matroids, are gene…
View article: Frequency Regulation Using Virtual Synchronous Generator for Thermal Power Plant in Islanding Mode
Frequency Regulation Using Virtual Synchronous Generator for Thermal Power Plant in Islanding Mode Open
Flue gas released by the traditional coal-fired power plant can be converted into electricity by means of thermoelectric generation system (TGS).The self-supply power system (SSPS) utilizes this electric power to safeguard the power plant …
View article: Structural Vibration Suppression Using a Reduced-Order Extended State Observer-Based Nonsingular Terminal Sliding Mode Controller with an Inertial Actuator
Structural Vibration Suppression Using a Reduced-Order Extended State Observer-Based Nonsingular Terminal Sliding Mode Controller with an Inertial Actuator Open
In this paper, we mainly aimed to design a reduced-order extended state observer-based active vibration controller for a structural vibration control system with total disturbances, i.e., model uncertainties, higher harmonics, and external…
View article: Dynamic power decoupling for low-voltage ride-through of grid-forming inverters
Dynamic power decoupling for low-voltage ride-through of grid-forming inverters Open
In grid-forming technologies, the power controllers emulate the operation of synchronous generator. The frequency regulation, power-decoupling and virtual inertia are mostly achieved on the basis of small-signal models. However, the transi…
View article: Reduced-Order Extended State Observer-Based Sliding Mode Control for All-Clamped Plate Using an Inertial Actuator
Reduced-Order Extended State Observer-Based Sliding Mode Control for All-Clamped Plate Using an Inertial Actuator Open
Considering the problems of total disturbances, i.e., higher harmonics, model uncertainties and external excitations in a practical vibration control system, a compound vibration suppression method is proposed for an all-clamped plate, whi…
View article: Clamping-Force Control of a Sensor-less Electro-Mechanical Brake Actuator in New-Energy Vehicles
Clamping-Force Control of a Sensor-less Electro-Mechanical Brake Actuator in New-Energy Vehicles Open
The explosive growth of New-Energy Vehicles (NEV) worldwide, combined with heated development in autonomous driving industries, has introduced a new demand for more controllable and reliable vehicle braking systems.Nowadays, the electro-me…
View article: PLL-Based Sensorless Control for Single-Stage Current Source Inverter in Motor Drive Application
PLL-Based Sensorless Control for Single-Stage Current Source Inverter in Motor Drive Application Open
The Current Source Inverters (CSIs) are an alternative to Voltage Source Inverters (VSIs) for electric motor applications. Despite the advantageous characteristics of intrinsic voltage boost capability, absence of electrolytic capacitors a…
View article: Research on Aggregation Model of Wind Farm Based on SSO Complex Torque Coefficient Analysis
Research on Aggregation Model of Wind Farm Based on SSO Complex Torque Coefficient Analysis Open
In order to study the influence of the clustering aggregation of doubly-fed wind turbines (DFIG) in the wind-fire bundling system on the system subsynchronous oscillation (SSO), the expression of the DFIG output active power on the electri…
View article: Fast and Simple Tuning Rules of Synchronous Reference Frame Proportional-Integral Current Controller
Fast and Simple Tuning Rules of Synchronous Reference Frame Proportional-Integral Current Controller Open
Synchronous reference frame proportional-integral (PI) current controller (CC) is considered the most well-established solution for the current regulation in electrical drives. However, the gain selection of the PI CC is still regarded to …
View article: Investigation on the transient stability of hydro generator working with power grid
Investigation on the transient stability of hydro generator working with power grid Open
Huge hydro-generator is the inevitable development trend of hydro-generator for utilization of water resources. It is very necessary to research the technical issues for 1000MW hydro-generator. Whether the short-circuit faults locate at th…
View article: The synthesis of monodispersed M-CeO<sub>2</sub>/SiO<sub>2</sub>nanoparticles and formation of UV absorption coatings with them
The synthesis of monodispersed M-CeO<sub>2</sub>/SiO<sub>2</sub>nanoparticles and formation of UV absorption coatings with them Open
Herein, we report the synthesis of monodispersed M-CeO2/SiO2nanoparticles and their use in the construction of a UV absorption coating.
View article: A Novel Concept of Ribless Synchronous Reluctance Motor for Enhanced Torque Capability
A Novel Concept of Ribless Synchronous Reluctance Motor for Enhanced Torque Capability Open
The rotor structure of synchronous reluctance machines (SynRel) is conventionally retained mechanically by iron ribs. In this paper a novel structure for high speed synchronous reluctance rotor is presented. The novelty of this work is the…
View article: A Nonlinear Extended State Observer for Rotor Position and Speed Estimation for Sensorless IPMSM Drives
A Nonlinear Extended State Observer for Rotor Position and Speed Estimation for Sensorless IPMSM Drives Open
© 1986-2012 IEEE. Sensorless machine drives in vehicle traction frequently experience rapidly-changing load disturbance and demand fast speed dynamics. Without gain-scheduling or compensation, conventional quadrature phase-locked-loop (Q-P…
View article: Heating Problem of Stator Strands of Large Air Synchronous Generator
Heating Problem of Stator Strands of Large Air Synchronous Generator Open
In this paper, a three-dimensional model of a large synchronous generator stator is established. Based on the basic theory of heat transfer, the finite volume method is applied, and appropriate assumptions are put forward. The boundary con…
View article: Enactment of Ensemble Learning for Review Spam Detection on Selected Features
Enactment of Ensemble Learning for Review Spam Detection on Selected Features Open
In the ongoing era of flourishing e-commerce, people prefer online purchasing products and services to save time. These online purchase decisions are mostly influenced by the reviews/opinions of others who already have experienced them. Ma…
View article: A coordinated voltage control scheme for power system with wind farm integration based on EID compensation
A coordinated voltage control scheme for power system with wind farm integration based on EID compensation Open
Rapid increase of wind power installation brings new issues and challenges for grid security operation and one of the most important key issues is reactive power and voltage control capability of wind farms. This paper proposes a coordinat…
View article: A Fractional Slot Multiphase Air-Core Compulsator With Concentrated Winding
A Fractional Slot Multiphase Air-Core Compulsator With Concentrated Winding Open
Compulsator is a specially designed generator capa¬ble of delivering high current pulses to a low-impedance load, such as the electromagnetic railgun. In order to increase the tip speed of the rotor, advanced composite materials have been …
View article: Self-Excitation and Energy Recovery of Air-Core Compulsators
Self-Excitation and Energy Recovery of Air-Core Compulsators Open
As power supplies, compulsators are popular choices for high-end railgun power supplies. In order to increase power and energy density, air-core compulsators are proposed by using composite materials instead of traditional iron-core compul…
View article: Analytical Models of Power Losses of a Three phase AC-DC Rectifier for Hybrid Electric Vehicles
Analytical Models of Power Losses of a Three phase AC-DC Rectifier for Hybrid Electric Vehicles Open
This paper presents the investigation of analytical models for the approximation of conduction and switching losses of the power-switch network in a three-phase AC-DC matrix rectifier. Analytical models of conduction and switching losses c…
View article: Rapid Faults Detection for Controlling Multi-terminal High Voltage DC Grids under AC Grid Contingencies
Rapid Faults Detection for Controlling Multi-terminal High Voltage DC Grids under AC Grid Contingencies Open
To control power flow for integration of distributed energy onto urban power grids, rapid and accurate detection of the amplitude, phase-angle, and frequency offset of the grid voltage's positive and negative sequence components especially…
View article: Case Study: Dynamic Performance of a MTDC Network in Zhoushan City
Case Study: Dynamic Performance of a MTDC Network in Zhoushan City Open
This paper presents dynamic responses of a multi-terminal high voltage DC (MTDC) network in Zhoushan islands, China. The conventional methods of controlling MTDC networks suffered from poor dynamic performance. In this paper, an optimal st…