A5035232631- Silicon Carbide Semiconductor Technologies
- Multilevel Inverters and Converters
- Advanced DC-DC Converters
- Chaos control and synchronization
- Nonlinear Dynamics and Pattern Formation
- Silicon and Solar Cell Technologies
- Microgrid Control and Optimization
- Electrostatic Discharge in Electronics
- Thin-Film Transistor Technologies
- Textile materials and evaluations
- Supercapacitor Materials and Fabrication
- Pharmaceutical Quality and Counterfeiting
- Real-time simulation and control systems
- Colorectal Cancer Screening and Detection
- Photoacoustic and Ultrasonic Imaging
- Gastric Cancer Management and Outcomes
- AI in cancer detection
- Photovoltaic System Optimization Techniques
- Vibration and Dynamic Analysis
- Cryospheric studies and observations
- Gastrointestinal Tumor Research and Treatment
- Acute Ischemic Stroke Management
- Induction Heating and Inverter Technology
- Radiomics and Machine Learning in Medical Imaging
- Cerebral Venous Sinus Thrombosis
University of Shanghai for Science and Technology
2023-2024
North Minzu University
2020
Chongqing University
2009-2016
National Medical Products Administration
2005
Abstract The frequency‐domain‐based realization condition related to a novel non‐invasive chaos control is presented in this paper. According the common piecewise‐linear characteristics of PWM‐controlled DC–DC converter system, general expression for its Jacobian matrix derived optimizing parameters proposed control. relevant simulation and experiment results about application voltage‐mode Buck are given, which confirm feasibility parameter‐optimization method validity Copyright © 2010 John...
There exist fast scale and slow nonlinear dynamic behaviors in the voltage source inverter. Period doubling bifurcation low-frequency oscillation instability phenomena are investigated. A unified control strategy based on frequency-domain transfer function is proposed to suppress fast-scale slow-scale instabilities under guarantee of inverter's good static performance. The stability boundary inverter greatly expanded with help controller. Harmonic balance method small-signal averaged model...
In wind power converters, the junction temperature of module is crucial factor which affects its reliability. This study developed a comprehensive thermal management strategy to improve operational reliability small-scale converter. Firstly, idea that improves introduced. Then, in order smooth fluctuations, adjustment law switching frequency and exterior have been investigated. A field-programmable gate array- based system consists temperature-controlled oscillator fan speed regulator as...
Summary This paper presents a new additional perturbation control method for suppressing low‐frequency oscillation in voltage‐mode H‐bridge DC–AC inverter. The stability boundary of the inverter is investigated from its small‐signal averaged model. High input voltage and light load would cause this system. To end, filter‐based (FBPC) proposed eliminating oscillation, by using an analog filter to extract unexpected signal applying it loop. Theoretical results show larger range controlled...
In wind power converters, the junction temperature of module is crucial factor which affects its reliability. This paper developed a comprehensive thermal management strategy to improve operational reliability small-scale converter. Theoretical analysis, simulation and frequency conversion experiment are given verify effectiveness. And specific goal has also been investigated. Firstly, idea combines as well stability introduced. Then, in order smooth fluctuations, flexible continuous...
To identify and classify submucosal tumors by building validating a radiomics model with gastrointestinal endoscopic ultrasonography (EUS) images.
A new concept related to self-stable chaos control is first put forward, and its theoretical basis realization are presented from the frequency-domain perspective. With a analogous-circuit of this applications in voltage-mode Buck converter discussed. The harmonic-balance method applied determine range parameter. experiment results given last part confirm validity proposed method.
Abstract Hair plays an important role in a person’s appearance. According to survey by the World Health Organization, approximately 70% of adults have scalp and hair problems. Doctors currently make hairline recession diagnoses based on loss criteria, but this approach is subjective. This paper proposes novel method for objectively assessing grades. First, Bilateral Segmentation Network model utilized obtain facial segmentation image. Second, utilizes connected components improve results....
Defect is one of the key factors in reducing reliability insulated gate bipolar transistor (IGBT) module, so developing diagnostic method for defects inside IGBT module an important measure to avoid catastrophic failure and improves power electronic converters. For this reason, a novel based on approximate entropy (ApEn) theory presented paper, which can provide statistical diagnosis allow operator replace defective modules timely. The proposed achieved by analyzing cross ApEn voltages...
A set of accelerated aging and automatic test system for IGBT modules is designed in this paper, including platforms parameter test.Aging platform controlled by IPC, using DC power cycling methods water cooling to heat dissipation.Combined with LabVIEW high-speed digitizers, single pulse switch testing achieved through hardware circuit.In different stages the module tests, change trend each electrical parameters were measured under working point.Collector-emitter conduction voltage drop V...