2018 IEEE 4th Southern Power Electronics Conference (SPEC)最新文献_第9页

An Improvement on A Simplified Space Vector Modulation Algorithm to Solve the Inherent Three-Phase Unbalance 一种改进的简化空间矢量调制算法解决固有三相不平衡

2018 IEEE 4th Southern Power Electronics Conference (SPEC) Pub Date : 2018-12-01 DOI: 10.1109/SPEC.2018.8635837

Hongda Wu, Jinjun Liu, Shaodi Ouyang

{"title":"An Improvement on A Simplified Space Vector Modulation Algorithm to Solve the Inherent Three-Phase Unbalance","authors":"Hongda Wu, Jinjun Liu, Shaodi Ouyang","doi":"10.1109/SPEC.2018.8635837","DOIUrl":"https://doi.org/10.1109/SPEC.2018.8635837","url":null,"abstract":"Space vector modulation (SVM) is widely used in traditional three-phase converters, but when extended to multilevel converters it suffers from issues of heavy computation cost and intense memory usage. Researchers have proposed many simplified SVM algorithms, but they are still impractical in some respects. This paper examines a simplified SVM algorithm based on H-D coordinates, which has simpler calculations than simplified algorithms based on other coordinate systems. Then, this paper analyzes this simplified algorithm and finds it has an inherent three-phase unbalance problem. There are two reasons for the unbalance: the unbalance of generation rules and the directionality of H-D coordinates. Then, based on the feature of HD coordinates, we propose an improved SVM algorithm. The proposed algorithm divides the hexagonal vector space diagram into three diamond-shaped areas equally and can take full advantage of the similarities among them. Consequently, the unbalance problem is solved and the calculations are still compact. In addition, the proposed algorithm has another two features: simplified calculation in a condition of overmodulation and better balance performance when switching frequency equals a multiple of 150 Hz. Based on our findings, we believe the proposed SVM algorithm is more practical than others and is suitable for large level-number applications like three-phase modular multilevel converters. Simulations in various operating conditions are done.","PeriodicalId":335893,"journal":{"name":"2018 IEEE 4th Southern Power Electronics Conference (SPEC)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124005125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Model Predictive Control of Direct Matrix Converter with Common Mode Voltage Elimination 共模电压消除直接矩阵变换器的模型预测控制

2018 IEEE 4th Southern Power Electronics Conference (SPEC) Pub Date : 2018-12-01 DOI: 10.1109/SPEC.2018.8635925

M. Uddin, G. Mirzaeva, G. Goodwin

引用次数: 2

Modelling of Track Layout for Intelligent Railway Signalling System: A Machine Learning Application 智能铁路信号系统轨道布局建模:机器学习应用

2018 IEEE 4th Southern Power Electronics Conference (SPEC) Pub Date : 2018-12-01 DOI: 10.1109/SPEC.2018.8635878

Y. Baviskar, U. Suryawanshi, A. Sheikh

{"title":"Modelling of Track Layout for Intelligent Railway Signalling System: A Machine Learning Application","authors":"Y. Baviskar, U. Suryawanshi, A. Sheikh","doi":"10.1109/SPEC.2018.8635878","DOIUrl":"https://doi.org/10.1109/SPEC.2018.8635878","url":null,"abstract":"The railway signalling domain is a complex critical infrastructure, linking communication and number of control elements. Ensuring safety in railway signalling system is always considered as a guarantee of intact operation of the railway. Current signalling system composes of centralized controllers which provide a single feature such as interlocking, and level crossing control. The Indian Railways (IR) uses Panel Interlocking (PI), Route Relay Interlocking (RRI), and Solid State Interlocking (SSI) or Electronic Interlocking (EI) for signalling safety, however, permitting movement of the trains lies in the hands of a human. The main challenge is to combine multiple sources of data and define a system which can intensify the functionality of the system. This paper mainly focuses on development of an automated model, beneficial to Intelligent Signalling System (ISS). Assessing its ability to take a decision which authorizes the movement of trains according to the timetable and modify it depending on real-time information using Machine Learning (ML). For modelling, IR standard single line station layout is considered and graphical model-based design techniques are implied. For analysis consider the track sections as nodes, signals as the start point and the end point linked to specific routes and assessing the developed model for various operating scenarios keeping a strict check on completeness and consistency. Implementation of such system in the railway network will not only provide a comprehensive level of safety in railway transportation but also takes a step forward towards systematizing various methods and strategies such as rescheduling system, monitoring performance under one roof using ML","PeriodicalId":335893,"journal":{"name":"2018 IEEE 4th Southern Power Electronics Conference (SPEC)","volume":"147 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115118310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Impact of Nonlinearity on Type-3 WT's Fault Current 非线性对3型小波故障电流的影响

2018 IEEE 4th Southern Power Electronics Conference (SPEC) Pub Date : 2018-12-01 DOI: 10.1109/SPEC.2018.8635941

Yuanzhu Chang, Jiabing Hu, E. Zhang, Xiaojie Zhang

{"title":"Impact of Nonlinearity on Type-3 WT's Fault Current","authors":"Yuanzhu Chang, Jiabing Hu, E. Zhang, Xiaojie Zhang","doi":"10.1109/SPEC.2018.8635941","DOIUrl":"https://doi.org/10.1109/SPEC.2018.8635941","url":null,"abstract":"Due to Type-3 wind turbine (WT) has already become a highly penetrated power source in modern power systems, characterizing its properties during short circuit is a basic requirement for system analysis. However, although nonlinearity, such as saturation effect of doubly fed induction generator (DFIG) and the dynamic of phase-locked loop (PLL), is a critical determinant, it has been simply ignored in the existing literatures. This paper is focusing on the impact of nonlinearity on Type-3 WT's fault current. First, a 10kW experimental prototype is carefully designed in laboratorial scale to demonstrate the dynamic performance of Type-3 WT during low voltage ride through (LVRT). Then, the impact of those nonlinear elements on fault current is quantified through the comparisons with the analytical results that are calculated without the consideration of nonlinearity. It shows that the nonlinear feature mainly influences the maximum value of fault current in the instant control time scale. Hence, expressions and method are proposed to evaluate the actual momentary current of a Type-3 WT. The conclusion of this paper is expected to be implemented in rating circuit breakers and other equipment.","PeriodicalId":335893,"journal":{"name":"2018 IEEE 4th Southern Power Electronics Conference (SPEC)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121096623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Power Sharing Scheme for an Islanded Microgrid Including Renewables and Battery Storage 包含可再生能源和电池存储的孤岛微电网电力共享方案

2018 IEEE 4th Southern Power Electronics Conference (SPEC) Pub Date : 2018-12-01 DOI: 10.1109/SPEC.2018.8635948

Jiahui Jiang, C. Coates

引用次数: 4

A Novel Zero-Voltage-Detector for Buck Converter in Discontinuous Conduction Mode(DCM) 一种用于Buck变换器断续导通模式(DCM)的新型零电压检测器

2018 IEEE 4th Southern Power Electronics Conference (SPEC) Pub Date : 2018-12-01 DOI: 10.1109/SPEC.2018.8635909

Meng Jia, Zhuochao Sun, L. Siek

引用次数: 1

Design of a Contactless Rotary Device Based on Inductively Coupled Power Transfer 基于电感耦合功率传输的非接触式旋转装置设计

2018 IEEE 4th Southern Power Electronics Conference (SPEC) Pub Date : 2018-12-01 DOI: 10.1109/SPEC.2018.8636022

H. Zong, Xiangjun Zhang, Xiaorui Zhang, Yijie Wang, Dianguo Xu, Hailin Tian, Xiufang Liu, D. Yan

引用次数: 0

A Parallel-Output CLTCL Multi-Resonant Soft-Switching DC-DC Converter 一种并联输出CLTCL多谐振软开关DC-DC变换器

2018 IEEE 4th Southern Power Electronics Conference (SPEC) Pub Date : 2018-12-01 DOI: 10.1109/SPEC.2018.8635917

F. Han, Zhun Meng

引用次数: 2

Optimal Operational Scheduling of Smart Microgrids Considering Hourly Reconfiguration 考虑小时重构的智能微电网最优运行调度

2018 IEEE 4th Southern Power Electronics Conference (SPEC) Pub Date : 2018-12-01 DOI: 10.1109/SPEC.2018.8635981

S. Esmaeili, S. Jadid, A. Anvari‐Moghaddam, J. Guerrero

引用次数: 5

Thermal Management of an Electric Ferry Lithium-Ion Battery System 电动渡轮锂离子电池系统的热管理

2018 IEEE 4th Southern Power Electronics Conference (SPEC) Pub Date : 2018-12-01 DOI: 10.1109/SPEC.2018.8635922

E. Alston, S. Jayasinghe, C. Baguley, U. Madawala

引用次数: 7