Qiang Wang

Security access control method for three-dimensional database of power grid engineering under high concurrent access

Qiang Wang, Yong Feng, Jingguo Rong, Su Zhang

In order to reduce the avalanche effect value during secure access to the three-dimensional power grid engineering database and improve access throughput, this study designed a database security access control method for high-concurrency environments. Firstly, thread pool technology was introduced to implement …

cn (code pays fourni par la source)

PipeDiT: Accelerating Diffusion Transformers in Video Generation with Task Pipelining and Model Decoupling

Sijie Wang, Qiang Wang, Shaohuai Shi

Video generation has been advancing rapidly, and diffusion transformer (DiT) based models have demonstrated remark- able capabilities. However, their practical deployment is of- ten hindered by slow inference speeds and high memory con- sumption. In this paper, we propose a novel pipelining …

A Review of Five-Level Active Neutral-Point Clamped (5L-ANPC) Converter

Zhan Liu, Junru Chen, Qiang Wang, Peiyuan Li et autres

The five-level active neutral-point clamped (5L-ANPC) converter has been a subject that has attracted more research and development for medium/high-power energy conversion systems in industrial application due to the advantages of high quality of voltages and currents, low voltage stresses, etc. In …

cn, dk (code pays fourni par la source)

An improved double-vector model predictive control to eliminate multilevel jumps for 5L-ANPC

Zhan Liu, Jiawei Fu, Yang Yang, Qi Li et autres

cn (code pays fourni par la source)

Discontinuous Modulation Strategy for Z-Source Three-Level Inverters with Optimizable Switching Losses

Yizhan Jiang, Zhikang Guo, Qiang Wang, Bo Suk Yang et autres

cn (code pays fourni par la source)

Real-time NMPC for three-dimensional trajectory tracking control of AUV with disturbances

Wei Zhang, Qiang Wang, Xue Du, Yan Zheng

cn (code pays fourni par la source)

Research on the Development Trend and Graded Early Warning of Large Deformations in Soft Rock Tunnels: Microseismic and Deformation Monitoring

Qiang Wang, Ming Long Zhao, Yuepeng Sun

As tunnel excavation and resource extraction progressively extend into deeper underground environments, the frequency of large deformation incidents in soft surrounding rock tunnels is increasing worldwide. To accurately and efficiently predict the large deformation tendencies of such tunnels, this study establishes, validates, …

cn (code pays fourni par la source)

The experimental research of which different types of impact signals affect the bifurcation chaos behavior of three-degree-of-freedom collision system

Qiang Wang, Xin Zhang, Zhikai Xing, Mo Li et autres

Abstract Collision is a faulty behavior in mechanical equipment, which greatly affects the safety of equipment. In this paper, aiming at the collision failures that are prone to occur in mechanical equipment, the nonlinear fault collision behavior of a class of three-degree-of-freedom …

cn (code pays fourni par la source)

Generalized discontinuous PWM strategy for Z-source inverters with switch losses optimization

Yizhan Jiang, Qiang Wang, Fengyou He, Jingwei Zhang et autres

cn (code pays fourni par la source)

Dual-Vector Model Predictive Control for Modular Multilevel Converter With Low Calculation Burden

Weifeng Zhang, Jingwei Zhang, Qiang Wang, Yizhan Jiang et autres

This paper proposes a novel dual-vector model predictive control (DV-MPC) method applied to modular multilevel converter(MMC). The traditional predictive control method generally aim to minimize the output current tracking error at the next sampling instant, while the proposed method minimizes the total …

cn (code pays fourni par la source)

Using Redundant IGBT Device as a Temperature Sensor—Online Monitoring System of Thermal Parameters for NPC Three-Level Inverters

Qiang Wang, Yu Tian, Yizhan Jiang, Jingwei Zhang et autres

Neutral-point-clamped (NPC) three-level inverter has been widely used in the field of medium- and high-voltage power inverters, and the existence of redundant insulated gate bipolar transistor (IGBT) devices in specific topology brings the possibility of online monitoring for thermal reliability. First, a …

cn (code pays fourni par la source)

Short-Circuit Fault Adaptive Analysis and Protection for SiC MOSFETs

Qiang Wang, Jingwei Zhang, Francesco Iannuzzo, Yizhan Jiang et autres

Aiming at the short-circuit (SC) capability for silicon carbide (SiC) MOSFETs due to the limitation of the gate oxide process, that is, the ability of MOSFET to withstand large current and high voltage when the channel is turned on, this article summarizes …

cn, dk (code pays fourni par la source)