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A Novel PWM Method of Diode-clamped Multilevel Inverter at Low Modulation Indices

Xin Xiang,Zhang Qingfan,Hu Shunquan,Li Ruilai

Strategic Study of CAE 2007, Volume 9, Issue 10,   Pages 91-96

Abstract:

Diode-clamped multilevel inverter is a kind of power converter which The paper presents a novel carrier-based PWM method to take advantage of all levels in the invertersimulation results indicate that the novel PWM strategy increases device utilization and enables the inverter

Keywords： diode-clamped inverter     carrier-based PWM     low modulation index     redundant state    

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Unified power quality conditioner based on a three-level NPC inverter using fuzzy control techniques

Salim CHENNAI,M-T BENCHOUIA

Frontiers in Energy 2014, Volume 8, Issue 2,   Pages 221-239 doi: 10.1007/s11708-014-0317-7

Abstract: efficient control scheme for unified power quality conditioner (UPQC) based on three-level neutral point clamped(NPC) inverter using fuzzy logic techniques.

Keywords： three-level neutral point clamped (NPC) inverter     unified power quality conditioner (UPQC)     current harmonics    

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Conformal analysis of fundamental frequency of vibration of elastic clamped plates

QI Hongyuan, ZHU Hengjun

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 4,   Pages 429-432 doi: 10.1007/s11465-007-0073-z

Abstract: To calculate the fundamental frequency of vibration of special-shaped and elastic clamped plates, theFinally, taking ellipse elastic clamped plates as an example, the effects on fundamental frequency coefficient

Keywords： direction     theory     vibration     odd     complicated boundary    

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Fundamental frequency and testing mode of complicated elastic clamped-plate vibration

QI Hongyuan, GUAN Yiduo

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4,   Pages 360-364 doi: 10.1007/s11465-008-0084-4

Abstract: Aimed at the modal analysis of complicated elastic clamped-plates, a trigonometric interpolation methodsignal processing technology and its software programming, modal parameter recognition of the elastic clamped-plate

Keywords： multi-point excitation     rectangle-plate     single-point     processing technology     trigonometric interpolation    

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Application of Z-source inverter in the asynchronous motor

Zhu Hong,Zhu Longji and Xia Ruofei

Strategic Study of CAE 2014, Volume 16, Issue 3,   Pages 86-91

Abstract: the IFOC technology is used to control the size of the speed of asynchronous motor，and the Z- source inverteris used，namely putting a pair of LC network in front of the inverter main circuit，to achieve the function

Keywords： IFOC     asynchronous motor     Z-source inverter    

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Series transformer based diode-bridge-type solid state fault current limiter

Amir HEIDARY,Hamid RADMANESH,Seyed Hamid FATHI,G. B. GHAREHPETIAN

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 9,   Pages 769-784 doi: 10.1631/FITEE.1400428

Abstract: We propose a novel series transformer based diode-bridge-type solid state fault current limiter (SSFCL

Keywords： Solid state fault current limiter (SSFCL)     Power quality     Voltage sag     Point of common coupling (PCC)     Isolation transformer    

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Power performance of circular piezoelectric diaphragm generators

TANG Kehong, KAN Junwu, YANG Zhigang, CHENG Guangming, PENG Taijiang

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4,   Pages 434-440 doi: 10.1007/s11465-008-0069-3

Abstract: Simply supported and clamped boundary conditions were considered.piezoelectric diaphragm generator with given dimensions tends to achieve higher output power under clamped

Keywords： clamped boundary     energy-harvesting     composite diaphragm     piezoelectric composite     maximum    

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Hybrid intelligent water drop bundled wavelet neural network to solve the islanding detection by inverter-based

Mehrdad TARAFDAR HAGH,Homayoun EBRAHIMIAN,Noradin GHADIMI

Frontiers in Energy 2015, Volume 9, Issue 1,   Pages 75-90 doi: 10.1007/s11708-014-0337-3

Abstract: In this paper, a passive neuro-wavelet based islanding detection technique for grid-connected inverter-based

Keywords： islanding detection     neuro-wavelet     intelligent water drop (IWD)     non-detection zone (NDZ)     distributed generation (DG)    

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Fault tolerant control strategy for modular PWM current source inverter

Frontiers in Energy 2023, Volume 17, Issue 2,   Pages 228-238 doi: 10.1007/s11708-022-0852-6

Abstract: method for an input-series output-parallel modular grid-tied pulse-width modulation (PWM) current source inverterto ensure a sinusoidal output of the grid current, and it can achieve the upper limit power of the inverter

Keywords： current source converter (CSC)     fault-tolerant control     space vector modulation     active damping     resonance suppression     power quality    

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Vibration control efficiency of piezoelectric shunt damping system

Dan WU, Zhichun YANG, Hao SUN,

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 4,   Pages 441-446 doi: 10.1007/s11465-009-0055-4

Abstract: Four PZT patches with different sizes are bonded on the geometrical central area of four similar clamped

Keywords： piezoelectric shunt     vibration control efficiency     clamped plate     generalized electromechanical coupling    

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Multi-Component Resource Recycling from Waste Light-Emitting Diode Under Hydrothermal Condition: Plastic

Yongliang Zhang,Lu Zhan,Zhenming Xu,

Engineering doi: 10.1016/j.eng.2023.04.008

Abstract: Light emitting diodes (LEDs) have accounted for most of the lighting market as the technology matures and costs continue to reduce. As a new type of e-waste, LED is a double-edged sword, as it contains not only precious and rare metals but also organic packaging materials. In previous studies, LED recycling focused on recovering precious and strategic metals while ignoring harmful substances such as organic packaging materials. Unlike crushing and other traditional methods, hydrothermal treatment can provide an environment-friendly process for decomposing packaging materials. This work developed a closed reaction vessel, where the degradation rate of plastic polyphthalamide (PPA) was close to 100%, with nano-TiO2 encapsulated in plastic PPA being efficiently recovered, while metals contained in LED were also recycled efficiently. Besides, the role of water in plastic PPA degradation that has been overlooked in current studies was explored and speculated in detail in this work. Environmental impact assessment revealed that the proposed recycling route for waste LED could significantly reduce the overall environmental impact compared to the currently published processes. Especially the developed method could reduce more than half the impact of global warming. Furthermore, this research provides a theoretical basis and a promising method for recycling other plastic-packaged e-waste devices, such as integrated circuits.

Keywords： Waste LED     Hydrothermal treatment     Recycling     Plastic PPA degradation     Packaging materials    

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Flexible resonant tank for a combined converter to achieve an HPS and LED compatible driver

Jin HU,Hui-pin LIN,Zheng-yu LU,Feng-wu ZHOU

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 8,   Pages 679-693 doi: 10.1631/FITEE.1500054

Abstract: Light emitting diode (LED) is expected as the next generation lighting source due to its continuously

Keywords： High pressure sodium (HPS)     Light emitting diode (LED)     Compatible driver     Ballast    

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Ultrasonic linear motor using the L-B mode Langevin transducer with an exponential horn

SHI Shengjun, CHEN Weishan, LIU Junkao, ZHAO Xuetao

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 2,   Pages 212-217 doi: 10.1007/s11465-008-0026-1

Abstract: linear motor is proposed and fabricated by using the longitudinal and bending vibration double mode bolt-clamped

Keywords： longitudinal     vibration     bolt-clamped     semiconductor     ultrasonic    

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Implementation of photovoltaic water pumping system with MPPT controls

Najet REBEI,Ali HMIDET,Rabiaa GAMMOUDI,Othman HASNAOUI

Frontiers in Energy 2015, Volume 9, Issue 2,   Pages 187-198 doi: 10.1007/s11708-015-0359-5

Abstract: optimum duty ratio is the input of a DC/DC boost converter which feeds a set of Moto-pump via a DC/AC inverter

Keywords： photovoltaic generator (PVG)     maximum power point tracking (MPPT)     boost DC/DC converter     DC/AC inverter    

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Feedback linearization based control for weak grid connected PV system under normal and abnormal conditions

Rahul SHARMA,Sathans SUHAG

Frontiers in Energy 2020, Volume 14, Issue 2,   Pages 400-409 doi: 10.1007/s11708-017-0459-5

Abstract: This paper proposes a control strategy for interface of distributed energy sources into the weak grid system with a focus on the energy and ancillary services. A novel controller has been designed and implemented to tackle the challenges of coupling terms in the LCL filter, the transient behavior under sudden changes, and the voltage support under fault condition using the feedback linearization technique. The controller proposed has been implemented on the PV system connected with the weak grid using the LCL filter and the performance of the controller has been verified using Matlab/Simulink through simulation under different conditions. The results of the controller proposed have been compared with the conventional PI dual loop controller. The simulation results obtained demonstrate the effectiveness and simplicity of the controller design strategy.

Keywords： PV system     grid interface     feedback linearization     inverter     LCL filter    

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Title Author Date Type Operation

A Novel PWM Method of Diode-clamped Multilevel Inverter at Low Modulation Indices

Xin Xiang,Zhang Qingfan,Hu Shunquan,Li Ruilai

Journal Article

Unified power quality conditioner based on a three-level NPC inverter using fuzzy control techniques

Salim CHENNAI,M-T BENCHOUIA

Journal Article

Conformal analysis of fundamental frequency of vibration of elastic clamped plates

QI Hongyuan, ZHU Hengjun

Journal Article

Fundamental frequency and testing mode of complicated elastic clamped-plate vibration

QI Hongyuan, GUAN Yiduo

Journal Article

Application of Z-source inverter in the asynchronous motor

Zhu Hong,Zhu Longji and Xia Ruofei

Journal Article

Series transformer based diode-bridge-type solid state fault current limiter

Amir HEIDARY,Hamid RADMANESH,Seyed Hamid FATHI,G. B. GHAREHPETIAN

Journal Article

Power performance of circular piezoelectric diaphragm generators

TANG Kehong, KAN Junwu, YANG Zhigang, CHENG Guangming, PENG Taijiang

Journal Article

Hybrid intelligent water drop bundled wavelet neural network to solve the islanding detection by inverter-based

Mehrdad TARAFDAR HAGH,Homayoun EBRAHIMIAN,Noradin GHADIMI

Journal Article

Fault tolerant control strategy for modular PWM current source inverter

Journal Article

Vibration control efficiency of piezoelectric shunt damping system

Dan WU, Zhichun YANG, Hao SUN,

Journal Article

Multi-Component Resource Recycling from Waste Light-Emitting Diode Under Hydrothermal Condition: Plastic

Yongliang Zhang,Lu Zhan,Zhenming Xu,

Journal Article

Flexible resonant tank for a combined converter to achieve an HPS and LED compatible driver

Jin HU,Hui-pin LIN,Zheng-yu LU,Feng-wu ZHOU

Journal Article

Ultrasonic linear motor using the L-B mode Langevin transducer with an exponential horn

SHI Shengjun, CHEN Weishan, LIU Junkao, ZHAO Xuetao

Journal Article

Implementation of photovoltaic water pumping system with MPPT controls

Najet REBEI,Ali HMIDET,Rabiaa GAMMOUDI,Othman HASNAOUI

Journal Article

Feedback linearization based control for weak grid connected PV system under normal and abnormal conditions

Rahul SHARMA,Sathans SUHAG

Journal Article