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Matlab/Simulink Based Dynamic Simulation System for Distance Protection 认领 引用 被引量：3
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作者 许明 高厚磊 闫超 《Transactions of Tianjin University》 EI CAS 2008年第2期112-117,共6页
To observe the inner operating process of distance protection,a Matlab/Simulink based dynamic simulation system for microprocessor-based distance protection is designed in this paper.As a modularized design,the simula... To observe the inner operating process of distance protection,a Matlab/Simulink based dynamic simulation system for microprocessor-based distance protection is designed in this paper.As a modularized design,the simulation system is composed of several modules such as fault transient calculation,startup,Fourier algorithm,phase selection,impedance computing and impedance comparison etc.Some typical simulation cases,which focus on the main factors affecting distance relay's operation,have been simulated with the system.Simulation results show that the system is able to demonstrate the dynamic behaviors of distance protection under different operating conditions. 展开更多
关键词 distance protection dynamic simulation Matlab/Simulink impedance trace
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A Simulation Research on the Grid-Connected Control Technology of Single-Phase Inverters Based on MATLAB 认领 引用
2
作者 Jinjie Chen 《Journal of Electronic Research and Application》 2022年第4期7-12,共6页
This paper primarily discusses the main circuit of single-phase inverter circuits.It begins by introducing the research context and the significance of the subject,then discusses the topology of grid-connected single-... This paper primarily discusses the main circuit of single-phase inverter circuits.It begins by introducing the research context and the significance of the subject,then discusses the topology of grid-connected single-phase inverter circuits,continues by discussing the control strategy for grid-connected single-phase inverter circuits,realizes a sinusoidal pulse width modulation(SPWM)signal generation circuit and an inverse control algorithm program,and finally ensures good output waveform and fast dynamic response.In view of the hysteresis feature of the grid voltage’s synchronous signal sampling circuit,the acquisition function in digital signal processing(DSP)control chips is applied,and the reasons for the hysteresis phenomenon are thoroughly investigated.The reliability of the SPWM control algorithm is revealed through the results. 展开更多
关键词 Solar energy Photovoltaic power generation Grid-connected inverter circuit MATLAB simulation
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Active Fault Diagnosis and Early Warning Model of Distribution Transformers Using Sample Ensemble Learning and SO-SVM 认领 引用
3
作者 Long Yu Xianghua Pan +2 位作者 Rui Sun Yuan Li Wenjia Hao 《Energy Engineering》 EI 2026年第3期132-151,共20页
Distribution transformers play a vital role in power distribution systems,and their reliable operation is crucial for grid stability.This study presents a simulation-based framework for active fault diagnosis and earl... Distribution transformers play a vital role in power distribution systems,and their reliable operation is crucial for grid stability.This study presents a simulation-based framework for active fault diagnosis and early warning of distribution transformers,integrating Sample Ensemble Learning(SEL)with a Self-Optimizing Support Vector Machine(SO-SVM).The SEL technique enhances data diversity and mitigates class imbalance,while SO-SVM adaptively tunes its hyperparameters to improve classification accuracy.A comprehensive transformer model was developed in MATLAB/Simulink to simulate diverse fault scenarios,including inter-turn winding faults,core saturation,and thermal aging.Feature vectors were extracted from voltage,current,and temperature measurements to train and validate the proposed hybrid model.Quantitative analysis shows that the SEL–SO-SVM framework achieves a classification accuracy of 97.8%,a precision of 96.5%,and an F1-score of 97.2%.Beyond classification,the model effectively identified incipient faults,providing an early warning lead time of up to 2.5 s before significant deviations in operational parameters.This predictive capability underscores its potential for preventing catastrophic transformer failures and enabling timely maintenance actions.The proposed approach demonstrates strong applicability for enhancing the reliability and operational safety of distribution transformers in simulated environments,offering a promising foundation for future real-time and field-level implementations. 展开更多
关键词 Core saturation distribution transformer early fault detection ensemble learning fault diagnosis inter-turn fault MATLAB simulation sample ensemble learning self-optimizing SVM transformer protection
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Simulation of Adaptive Control Strategy for Electrical Discharge Machining Process 认领 引用
4
作者 杨青照 周明 +2 位作者 田洪森 张惠生 许东晖 《Journal of Shanghai Jiaotong university(Science)》 EI 2015年第4期408-414,共7页
Electrode down-time is an important factor affecting the efficiency and stability of electrical discharge machining(EDM) process. In the research, a way of simulating the regulation of the electrode down-time in an ED... Electrode down-time is an important factor affecting the efficiency and stability of electrical discharge machining(EDM) process. In the research, a way of simulating the regulation of the electrode down-time in an EDM adaptive control system has been studied. All the simulations are performed on Matlab. The simulation results demonstrate that this adaptive controller by regulating electrode down-time can direct the gap state to follow the specified reference gap state with or without disturbances. Finally, the adaptive control scheme is also validated by experiments. The significance of the simulation of an EDM adaptive control system lies on the fact that it provides a convenient way to guide the actual production and provides a new study method for the research of EDM control strategy with no regard of experimental conditions. 展开更多
关键词 electrical discharge machining(EDM) adaptive control electrode down-time Matlab simulation
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Groove modeling and digital simulation for intersecting structures of circular tubes based on coplanarity of vectors 认领 引用
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作者 Chen Changrong Zhou Sunsheng +3 位作者 Lian Guofu Huang Xu Feng Meiyan Gao Xianfeng 《China Welding》 CAS 2022年第2期29-38,共10页
In order to establish the groove model for intersecting structures of circular tubes,mathematical model of the intersecting line is established by the method of analytic geometry,and parametric equations are thus dete... In order to establish the groove model for intersecting structures of circular tubes,mathematical model of the intersecting line is established by the method of analytic geometry,and parametric equations are thus determined.The dihedral angle,groove angle and actual cutting angle for any position of the intersecting line are derived as well.In order to identify groove vectors for two pipes,a new analytical method,i.e.coplanarity of vectors,is further proposed to complete the groove model.The established model is virtually verified by programming and simulation calculation in the MATLAB environment.The results show that groove vectors of intersecting structures simulated by MATLAB are consistent with the theoretical groove model,indicating that the theoretical groove model established in this paper is accurate,and further proves that the proposed coplanarity of vectors for solving groove vectors is correct and feasible.Finally,a graphical user interface(GUI)is developed by MATLAB software to independently realize functions such as model drawing,variable calculation and data output.The research outcome provides a theoretical foundation for the actual welding of circular intersecting structures,and lays an essential basis for weld bead layout and path planning. 展开更多
关键词 method of analytic geometry in space intersecting line mathematical model coplanarity of vectors groove model MATLAB simulation
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Edge detection and mathematic fitting for corneal surface with Matlab software 认领 引用 被引量：9
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作者 Yue Di Mei-Yan Li +1 位作者 Tong Qiao Na Lu 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2017年第3期336-342,共7页
AIM：To select the optimal edge detection methods to identify the corneal surface,and compare three fitting curve equations with Matlab software. METHODS：Fifteen subjects were recruited. The corneal images from optic... AIM：To select the optimal edge detection methods to identify the corneal surface,and compare three fitting curve equations with Matlab software. METHODS：Fifteen subjects were recruited. The corneal images from optical coherence tomography（OCT）were imported into Matlab software. Five edge detection methods（Canny,Log,Prewitt,Roberts,Sobel）were used to identify the corneal surface. Then two manual identifying methods（ginput and getpts）were applied to identify the edge coordinates respectively. The differences among these methods were compared. Binomial curve（y=Ax2＋Bx＋C）,Polynomial curve [p（x）=p1xn＋p2x（n-1）＋....＋pnx＋pn＋1] and Conic section（Ax2＋Bxy＋Cy2＋Dx＋Ey＋F=0）were used for curve fitting the corneal surface respectively. The relative merits among three fitting curves were analyzed. Finally,the eccentricity（e）obtained by corneal topography and conic section were compared with paired t-test. RESULTS：Five edge detection algorithms all had continuous coordinates which indicated the edge of the corneal surface. The ordinates of manual identifying were close to the inside of the actual edges. Binomial curve was greatly affected by tilt angle. Polynomial curve was lack of geometrical properties and unstable. Conic section could calculate the tilted symmetry axis,eccentricity,circle center,etc. There were no significant differences between ＇e＇ values by corneal topography and conic section（t=0.9143,P=0.3760 〉0.05）.CONCLUSION：It is feasible to simulate the corneal surface with mathematical curve with Matlab software. Edge detection has better repeatability and higher efficiency. The manual identifying approach is an indispensable complement for detection. Polynomial and conic section are both the alternative methods for corneal curve fitting. Conic curve was the optimal choice based on the specific geometrical properties. 展开更多
关键词 Matlab software edge detection curve fitting mathematic simulation optical coherence tomography corneal topography
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基于Matlab的比率制动式变压器纵差保护仿真研究 认领 引用 被引量：3
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作者 曹斌 吴祖文 +1 位作者 饶成诚 陈开达 《电力学报》 2019年第2期175-181,共7页
电力变压器作为现代电网中最重要的设备之一,承担着电压变换的重要任务,因此对变压器保护的选择性、速动性、灵敏性和可靠性有很高的要求。为了深入分析变压器在故障时的暂态情况,改进现有变压器保护中的不足,该文基于Matlab嵌入式函数... 电力变压器作为现代电网中最重要的设备之一,承担着电压变换的重要任务,因此对变压器保护的选择性、速动性、灵敏性和可靠性有很高的要求。为了深入分析变压器在故障时的暂态情况,改进现有变压器保护中的不足,该文基于Matlab嵌入式函数模块型,构建了变压器故障和正常运行时的仿真模型。通过模拟变压器内外部故障,使研究者直观地观察到电力系统从运行状态到故障发生期间电气特征量的变化特征以及保护装置中每个元件处理和动作的过程。该仿真模型的研发周期短,研发效率高,便于为后续设计可靠的继电保护产品提供重要的实验平台,可有效解决利用物理模型开发继电保护产品的实验成本高、效率低、灵活性和通用性差等缺点。 展开更多
关键词 变压器 差动保护 比率制动 Matlab/Simulation
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MPPT for Hybrid Energy System Using Gradient Approximation and Matlab Simulink Approach 认领 引用 被引量：1
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作者 S. Khader A. Abu-Aisheh 《Journal of Energy and Power Engineering》 CAS 2010年第3期1-14,共14页
This paper applies new maximum-power-point tracking （MPPT） algorithm to a hybrid renewable energy system that combines both Wind-Turbine Generator （WTG） and Solar Photovoltaic （PV） Module （SPVM）. In this paper... This paper applies new maximum-power-point tracking （MPPT） algorithm to a hybrid renewable energy system that combines both Wind-Turbine Generator （WTG） and Solar Photovoltaic （PV） Module （SPVM）. In this paper, the WTG is a direct-drive system and includes wind turbine, three-phase permanent magnet synchronous generator, three-phase full bridge rectifier, and buck-bust converter, while the SPVM consist of solar PV modules, buck converter, maximum power tracking system for both systems, and load. Several methods are applied to obtain maximum performances, the appropriate and most effective method is called gradient-approximation method for WTG approach, because it enables the generator to operate at variable wind speeds. Furthermore MPPT also is used to optimized the achieved energy generated by solar PV modules.Matlab / Simulink approach is used to simulate, discuss, and optimized the generated power by varying the duty cycle of the converters, and tip speed ratio of the WTG system. 展开更多
关键词 Matlab simulation renewable energy solar energy wind energy hybrid energy gradient approximation synchronous motors and PWM.
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Tripartite evolutionary game and simulation study on enterprise green technology innovation 认领 引用
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作者 XIE Kun ZHANG Zheng-luan 《Ecological Economy》 2022年第1期42-56,共15页
By constructing the evolutionary game model among the government,enterprises and consumers,the paper analyzes the condition that the profit and loss relationship of the game subjects and their behavior strategies reac... By constructing the evolutionary game model among the government,enterprises and consumers,the paper analyzes the condition that the profit and loss relationship of the game subjects and their behavior strategies reach the stable state in the green technology innovation system,and uses MATLAB to conduct data simulation analysis.The results show that the government,enterprises and consumers have path-dependent behavior choices.The larger the government incentive coefficient and subsidy coefficient is not the better,but the larger the subsidy and subsidy coefficient will hinder the green technology innovation.Government punitive measures will promote green technology innovation,but high innovation subsidies will restrain the government’s environmental regulation.Therefore,the government should further improve environmental regulation policies,increase enterprises’enthusiasm for green technology innovation and consumers’acceptance of green products,and promote the development of green technology innovation. 展开更多
关键词 enterprise green technology innovation evolutionary game the MATLAB simulation
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基于Matlab的可编程逻辑微机保护的研究 认领 引用 被引量：4
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作者 石红杰 乐秀璠 徐懂理 《电力系统保护与控制》 EI 北大核心 2009年第11期82-85,90,共4页
目前在低压微机保护装置中,基于可编程逻辑的微机保护的应用是越来越多。这种微机保护平台,提高了微机保护装置的可靠性、灵活性、实用性、可扩展性和可移植性,大大缩短了产品的开发周期,同时有效解决了微机保护装置的工程化问题。在分... 目前在低压微机保护装置中,基于可编程逻辑的微机保护的应用是越来越多。这种微机保护平台,提高了微机保护装置的可靠性、灵活性、实用性、可扩展性和可移植性,大大缩短了产品的开发周期,同时有效解决了微机保护装置的工程化问题。在分析了目前常见的可编程逻辑微机保护之后,提出了一种新的基于Matlab/Simulink工具软件和DSP相结合的可编程逻辑微机保护的设想,这种方法预期有更高的灵活性,更短的产品开发周期。 展开更多
关键词 可编程逻辑 微机保护 功能块 Matlab/Simul ink DSP
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Simulation of a Triple Inverted Pendulum Based on Fuzzy Control 认领 引用
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作者 Wei Chen Nkurunziza Theodomile 《World Journal of Engineering and Technology》 2016年第2期267-272,共6页
The inverted pendulum is a classic problem in dynamics and control theory and is widely used as a benchmark for testing control algorithms. This paper studies the use of fuzzy control method to study the stability con... The inverted pendulum is a classic problem in dynamics and control theory and is widely used as a benchmark for testing control algorithms. This paper studies the use of fuzzy control method to study the stability control problem of a triple inverted pendulum system. By the linear model of the system, the feedback weight matrix of the LQR optimal control and the feedback parameters of the linear optimal control are designed to determine the parameters of the fuzzy controller. The simulation results show that the proposed method can achieve the stability control of the three stage inverted pendulum, and has good dynamic performance with simple parameter selection. 展开更多
关键词 Triple Inverted Pendulum Fuzzy Control LQR Matlab Simulation
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Modelling and Simulation of an Ohmic Heating Process 认领 引用
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作者 Hongwei Zhang Ahmed Mohamed +1 位作者 Timofei Breikin Martin Howarth 《Open Journal of Modelling and Simulation》 2021年第1期26-42,共17页
Ohmic Heating (OH) is one of the emerging thermal technologies used in food processing which can produce rapid and uniform heating with close to 100% energy transfer efficiency. Although mathematical modelling for OH ... Ohmic Heating (OH) is one of the emerging thermal technologies used in food processing which can produce rapid and uniform heating with close to 100% energy transfer efficiency. Although mathematical modelling for OH processes has been studied by many researchers in recent years, systematic simulations of OH have not been developed for model-based control of the processes. In this paper, mathematical model for a Colinear Ohmic Heater is presented, analyzed, and studied based on the selected configuration. A numerical solution for the mathematical equations has been defined and proposed. MATLAB/Simulink model is hence developed and validated against the available data. Simulation results have shown that MATLAB/Simulink model can produce robust outputs at low computational costs with an accuracy of up to 99.6% in comparison to the analytical solution. This model can be used in further studies for analysis of the OH processes and development of advanced controllers. 展开更多
关键词 Ohmic Heating Colinear Ohmic Heater Mathematical Modelling Numerical Solution MATLAB/Simulink Simulations
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Adaptive compensating method for Doppler frequency shift using LMS and phase estimation 认领 引用 被引量：7
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作者 Jing Qingfeng Guo Qing 《Journal of Systems Engineering and Electronics》 SCIE EI 2009年第5期913-919,共7页
The novel compensating method directly demodulates the signals without the carrier recovery processes, in which the carrier with original modulation frequency is used as the local coherent carrier. In this way, the ph... The novel compensating method directly demodulates the signals without the carrier recovery processes, in which the carrier with original modulation frequency is used as the local coherent carrier. In this way, the phase offsets due to frequency shift are linear. Based on this premise, the compensation processes are： firstly, the phase offsets between the baseband neighbor-symbols after clock recovery is unbiasedly estimated among the reference symbols; then, the receiving signals symbols are adjusted by the phase estimation value; finally, the phase offsets after adjusting are compensated by the least mean squares （LMS） algorithm. In order to express the compensation processes and ability clearly, the quadrature phase shift keying （QPSK） modulation signals are regarded as examples for Matlab simulation. BER simulations are carried out using the Monte-Carlo method. The learning curves are obtained to study the algorithm＇s convergence ability. The constellation figures are also simulated to observe the compensation results directly. 展开更多
关键词 Doppler frequency shift least mean square minimum phase shift keying unbiased estimation Matlab simulation.
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Least square algorithm for correcting high voltage arc edge discharge parameters 认领 引用
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作者 Zhixin Ou 《Journal of Highway and Transportation Research and Development(English Edition)》 2025年第2期68-72,共5页
The catenary system is a critical component of the electric traction power supply infrastructure;it is tasked with the stable conveyance of current to electric locomotives.As the catenary lacks a backup system,it expe... The catenary system is a critical component of the electric traction power supply infrastructure;it is tasked with the stable conveyance of current to electric locomotives.As the catenary lacks a backup system,it experiences an increased incidence of arcing and dust accumulation during operation.This can lead to fluctuations in power quality,particularly when arc edge discharge conditions are met under specific climatic circumstances,which are able susceptible to arc ignition.Such occurrences can severely compromise the structural integrity of the catenary equipment and disrupt the geometric parameters of the system.Firstly,the paper analyzes the nonlinear output characteristics of catenary safety features and edge discharge parameters within the system model.The least squares method is employed to identify the nonlinear model and to optimize error parameters in real-time.Secondly,transient overcurrent parameters and the characteristics of catenary equipment,including edge discharge and arc-induced pollution flashover,are simulated using specialized simulation software.Lastly,by comparing the simulation results with the real-time operational curves of the experimental equipment,the study concludes theoretically that parameter optimization based on the least squares method offers the most effective means of stable and adaptive adjustment for model identification. 展开更多
关键词 Catenary Least square method Edge discharge Model identification and correction Matlab modeling and simulation
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A new complete model of switch-mode plasma cutting power supply 认领 引用 被引量：3
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作者 Abdolreza Esmaeli 孙力 聂剑红 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2004年第3期250-256,共7页
A complete model of switch-mode plasma cutting power supply and its simulation are developed. The full bridge isolated pulse width modulation (PWM) buck converter in continuous conduction mode (CCM) for high watt plas... A complete model of switch-mode plasma cutting power supply and its simulation are developed. The full bridge isolated pulse width modulation (PWM) buck converter in continuous conduction mode (CCM) for high watt plasma power supply is approached. Reduced ripple current and improved power factor are achieved in the plasma power supply. With a PID control strategy, circuit responses become more stable and faster with low overshoot during load and current changing. The converter achieved high efficiency under 3 to 15kW load conditions. 展开更多
关键词 plasma cutting power supply PWM buck converter PID compensator MATLAB simulation
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数控切削性能的Fuzzy-PID控制算法的设计与仿真 认领 引用 被引量：8
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作者 肖顺根 宋萌萌 钟小倩 《组合机床与自动化加工技术》 北大核心 2011年第12期73-77,共5页
随着零件加工精度的日益提高及外界干扰因素的不断增加,传统PID控制的数控加工过程已不能满足目前切削性能的需求,如何使数控机床在加工中仍然保持优越的切削性能是目前制造领域研究的热点问题之一。根据数控切削加工系统的组成结构,建... 随着零件加工精度的日益提高及外界干扰因素的不断增加,传统PID控制的数控加工过程已不能满足目前切削性能的需求,如何使数控机床在加工中仍然保持优越的切削性能是目前制造领域研究的热点问题之一。根据数控切削加工系统的组成结构,建立了切削系统的数学模型。通过分析单位阶跃响应的误差曲线,归纳了PID参数自调整的模糊规则,并完成了一套与切削系统相匹配的Fuzzy-PID算法的设计。经动态性能、抗干扰性能和鲁棒性能的仿真实验分析,结果表明与传统PID算法相比,Fuzzy-PID算法应用于切削系统中具有更良好的品质。 展开更多
关键词 Fuzzy-PID算法 传统PID 切削性能 MATLAB/simulation
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Performance Analysis of a Woodchip Downdraft Gasifier:Numerical Prediction and Experimental Validation 认领 引用
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作者 Emanuela Manzino Daniela Olampi Ferruccio Pittaluga 《Journal of Energy and Power Engineering》 CAS 2015年第4期336-347,共12页
The study deals with a multi-faceted theoretical approach,symbolic,analytical and numerical,based on the chemical equilibrium assumption,addressed at predicting the performance trends of downdrafi wood-gasification pr... The study deals with a multi-faceted theoretical approach,symbolic,analytical and numerical,based on the chemical equilibrium assumption,addressed at predicting the performance trends of downdrafi wood-gasification processes so to assess the optimal ranges of input parameters,in particular the equivalence ratios,suitable to achieving the highest cold gas efficiencies whilst keeping the more the possible tar-free the produced bio-syngas.The time-steady,zero-dimensional model has been developed within MATLAB(the computing language and interactive environment from Matrix Laboratory)and solved by enforcing the constraints posed by the equilibrium constants in relation to two reactions,gas-water shift and methanation.Particular care is devoted toward verifying the real attainment of the equilibrium condition,as attested by an actual presence of products from the equilibrium reactions together with a zero difference AE between the energy flows entering and exiting the system,an issue often overlooked.With respect to other similar theoretical approaches,the numerical model,assisted by the symbolic counterpart for better interpretation and intrinsic validation of results,shows a distinct advantage in predicting rather accurately the syngas composition for varying gasification temperatures,as attested by cross comparisons with experimental data directly taken on an instrumented,dedicated,small-scale downdraft gasifier operational at DIME/SCL(the Savona Combustion Laboratory of DIME,the Dept.of Mechanical,Energy,Management and Transportation Engineering of Genova University).The behavior of cold gas efficiency clearly points out that,from an energy conversion point of view,the optimal gasification temperatures turn out comprised between 900℃and 1,000℃:this range is indeed characterized by the highest concentrations in the energy-rich syngas components CO and H2.For higher temperatures,as induced by higher air-to-fuel ratios,the progressive oxidation of above components,together with increasing nitrogen levels,would decrease the bio-syngas heat values. 展开更多
关键词 Downdraft gasifier woodchip gasification equilibrium chemistry MATLAB simulation.
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Positioning-control Based on Trapezoidal Velocity Curve for High-precision Basis Weight Control Valve 认领 引用 被引量：3
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作者 Bo Wang Wei Tang +1 位作者 JiXian Dong Feng Wang 《Paper And Biomaterials》 CAS 2017年第2期42-50,共9页
Traditionally, basis weight control valve is driven by a constant frequency pulse signal. Therefore, it is difficult for the valve to match the control precision of basis weight. Dynamic simulation research using Matl... Traditionally, basis weight control valve is driven by a constant frequency pulse signal. Therefore, it is difficult for the valve to match the control precision of basis weight. Dynamic simulation research using Matlab/Simulink indicates that there is much more overshoot and fluctuating during the valve-positioning process. In order to improve the valve-positioning precision, the control method of trapezoidal velocity curve was studied. The simulation result showed that the positioning steady-state error was less than 0.0056%, whereas the peak error was less than 0.016% by using trapezoidal velocity curve at 10 positioning steps. A valve-positioning precision experimental device for the stepper motor of basis weight control valve was developed. The experiment results showed that the error ratio of 1/10000 positioning steps was 4% by using trapezoidal velocity curve. Furthermore, the error ratio of 10/10000 positioning steps was 0.5%. It proved that the valve-positioning precision of trapezoidal velocity curve was much higher than that of the constant frequency pulse signal control strategy. The new control method of trapezoidal velocity curve can satisfy the precision requirement of 10000 steps. 展开更多
关键词 high-precision basis weight control valve precision positioning control trapezoidal velocity curve Matlab/Simulink simulation
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SVPWM的算法及仿真研究 认领 引用 被引量：7
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作者 理文祥 王庆贤 葛莲 《变频器世界》 2011年第4期67-69,51,共3页
在分析空间矢量脉宽调制(SVPWM)技术原理的基础上,详细推导了SVPWM算法,并对传统算法进行了过调制处理,使算法得以完善。在MATLAB/Simulink环境下建立了SVPWM控制的三相电压型逆变器仿真模型。仿真结果表明该算法的正确性和可行性。
关键词 空间矢量脉宽调制 MATLAB/Simul i nk 仿真
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Research of Pure Electric Ferry System and Its Short-Circuit Protection and Calculation 认领 引用
20
作者 Xiusong Yan Zechao Xu +1 位作者 Xingyu Yao Ning Wang 《Journal of Energy and Power Engineering》 CAS 2021年第1期8-15,共8页
System control and safety reliability are important links of the marine DC (Direct Current) power system. The simulationmodel is built by Matlab/Simulink, the battery and super-capacitor are supplied to the system thr... System control and safety reliability are important links of the marine DC (Direct Current) power system. The simulationmodel is built by Matlab/Simulink, the battery and super-capacitor are supplied to the system through a three-phase interleaved DC/DCconverter, the fuse and disconnector switch combination are used as the protection device, and the short-circuit point is set betweeneach branch and the DC distribution board, performing short-circuit simulation. This paper also proposes a short-circuit calculationmethod for super-capacitors based on the simplified model of series RC (Resistors & Capacitors), and verifies its correctness throughsimulation data. The results show that the introduction of a three-phase interleaved DC/DC converter reduces the current ripple andmakes the system control more convenient;short-circuit calculation and simulation have determined the short-circuit withstandcapability of the DC distribution board, and verified the feasibility of the fuse selection method and the short-circuit calculation methodof the super-capacitor. This provides reliable verification for the application and calculation of the actual project. 展开更多
关键词 Matlab/simulink simulation three-phase interleaved DC/DC battery and super-capacitor short-circuit protection and calculation
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