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Wormhole approach to control in distributed computing has direct relation to physics 12th

12th Portuguese conference on Automatic control, controlO 2016

作者： Lori, Nicolás F. Alves, Victor Algoritmi Centre University of Minho Braga Portugal

ISBN: (纸本)9783319436708

The topic of Wormholes in distributed computing is about creating two different realms with different characteristics, the synchronous Wormholes and the asynchronous payload with the goal of using the wormholes to control the synchronism of the payload processes. We describe the characteristics of Wormholes in distributed computing, and relate them to issues in Physics, specifically, wormholes in general relativity and entanglement in quantum mechanics. The entanglement in quantum mechanics is about the existence of fixed relations between different physical systems as if they were still the same system. The entanglement is made evident by the occurrence of decoherence, which transform the multiple outcome possibilities of quantum systems into a single outcome "classical physics"-like objective reality. It is here presented the similarity between the decoherence process in quantum physics and the consensus problem in distributed computing. The approach to quantum mechanics used is quantum Darwinism, a Darwinian approach to decoherence where the environment controls the outcome of a measurement. It is here proposed that wormhole systems can be used to implement environment-based control of distributed computing systems. © Springer international Publishing Switzerland 2017.

关键词： Distributed computer systems

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Design and control of wind/super-capacitor/battery/diesel engine power plant

Design and Control of wind/super-capacitor/battery/diesel en...

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international conference on Innovations in Electrical engineering and Computational Technologies (ICIEECT)

作者： Hassan, Syed Zulqadar Li, Hui Kamal, Tariq Arifoglu, Ugur Arsalan, Ali Kabir, Asif Chongqing Univ Sch Elect Engn State Key Lab Power Transmiss Equipment & Syst Se Chongqing Peoples R China Sakarya Univ Adapazari Sakarya Provinc Turkey Karachi Inst Econ & Technol Dept Elect Engn Karachi Pakistan

ISBN: (纸本)9781509033102

This piece of work provides a hybrid power plant integrating a wind coupled with Permanent Magnet Synchronous Generator (PMSG), a super-capacitor (SC), a battery and a diesel engine (DE) set which operates without a grid connection. Each subsystem (e.g., wind, SC, battery, DE) has controlled through non-isolated PID/PI embedded controller power converters while the overall operation and power flow priorities are achieved through Programming Logic controller (PLC). According to the algorithm, the wind has the priority to meet the demand. The SC and battery modules are utilized as an energy storage devices during surplus power and/or backup during demand. A diesel engine is also added to increase the reliability of the system for 24 hours. The performance of proposed design is tested at different wind speed and load conditions for a small community at Karachi, Pakistan. MATLAB results conclude the effectiveness of proposed system in terms of power quality and load tracking.

关键词： Wind Super-capacitor Battery Diesel engine Programming logic controller

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Conceptual modelling of emergency command and control network 2017

Conceptual modelling of emergency command and control networ...

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7th international conference on Information Communication and Management, ICICM 2017

作者： Zhu, Chaozheng Zou, Qingbing He, Ming Xu, Nuo Sun, Jihong College of Command Information Systems Army Engineering University No1 Haifu Lane Guanghua Load Qinhuai District Nanjing Jiangsu Province China People's Liberation Army Academy of Art Beixiaguan Street Haidian District Beijing China College of Energy and Electrical Engineering Hohai University No 8 Fochengxi Road Jiangning District Nanjing China

ISBN: (纸本)9781450352796

In view of the problems in the emergency disposal, such as unclear flow and untimely response, this article establishes the emergency disposal system framework, sorts the emergency disposal business flow, constructs the conceptual model of emergency control network and analyzes the dynamics, selfadaptability and reliability of the network, and applies the conceptual model to the analysis of "8. 12" Explosion in Tianjin to strengthen the emergency disposal capability. © 2017 Association for computing Machinery.

关键词： Reliability analysis

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Predictive power control of a DFIG driven by a back-To-back three-level neutral-point clamped converter

Predictive power control of a DFIG driven by a back-To-back ...

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2017 ieee international Electric Machines and Drives conference, IEMDC 2017

作者： Goncalves, Pedro Cruz, Sergio Caseiro, Luis Abadi, Mohsen Mendes, Andre Department of Electrical and Computer Engineering University of Coimbra and Instituto de Telecomunicações Coimbra Portugal

ISBN: (纸本)9781509042814

This paper proposes a new fault-Tolerant predictive control strategy, with minimal hardware requirements, for wind energy conversion systems based on the doubly-fed induction generator with the rotor fed by two three-level neutral-point clamped converters in a back-To-back configuration. The proposed strategy is capable of maintaining the system in operation with good performance under IGBT open-circuit and short-circuit faults in both converters simultaneously, thus reducing the wind turbine downtime and maintenance costs. Under the presence of an IGBT fault, the proposed fault-Tolerant approach simply discards the switching states that cannot be applied due to the fault or that put at risk the remaining healthy power switches of the converters, taking advantage of the versatility of finite control set model predictive control, without requiring the use of complex modulation techniques. In the case of IGBT open-circuit faults, a dc-link midpoint connection along with switching state limitation is performed to isolate the faulty legs of the converters. The effectiveness of the proposed fault-Tolerant strategy for IGBT faults in both converters, is validated with simulation results. © 2017 ieee.

关键词： Insulated gate bipolar transistors (IGBT)

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Preventive control considering aggregated controllable loads for voltage stability in electrical power systems

UPB Scientific Bulletin, Series C: Electrical Engineering an...

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UPB Scientific Bulletin, Series C: Electrical engineering and Computer Science 2018年第2期80卷 267-281页

作者： Li, S.H. He, Y. Li, H. Peng, H.M. College of Information Engineering Xiangtan University Xiangtan411105 China Innovation Center for Wind Power Equipment and Energy Conversion Xiangtan411101 China

Aggregated controllable load (ACL) has great potential in power system stability control and ancillary services. This paper proposes a new voltage stability constrained optimal power flow (VSC-OPF) model to coordinate ACL and the other control actions, such as generator terminal voltage adjusting, transformer tap regulation and power generation rescheduling. ACL is recognized as a new control stage to integrate into the proposed VSC-OPF. The successive linear programming method is applied to solve the proposed VSC-OPF. Finally, the effectiveness of the proposed method was verified in the reduced model of Guangzhou power network. © 2018 Politechnica University of Bucharest. All rights reserved.

关键词： Electric load flow

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Frequent Deviation-Free control for Micro-Grid Operation Modes Switching Based on Virtual Synchronous Generator

Frequent Deviation-Free Control for Micro-Grid Operation Mod...

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international conference on Life system Modeling and Simulation (LSMS) / international conference on Intelligent computing for Sustainable Energy and Environment (ICSEE)

作者： Xu, Yan Zhang, Tengfei Yue, Dong Nanjing Univ Posts & Telecommun Coll Automat Nanjing 210023 Jiangsu Peoples R China Jiangsu Engn Lab Big Data Anal & Control Act Dist Nanjing 210023 Jiangsu Peoples R China

ISBN: (纸本)9789811063640;9789811063633

The virtual synchronous generator (VSG), which overcomes the impact of the traditional inverter without the moment of inertia to the power grid, improves the stability of the power system and has received extensive attention in Micro-grid. However, since the VSG uses the traditional active power-frequency droop control, there is a frequency deviation in island mode, which will adversely affect the load in Micro-grid. A frequent deviation-free control strategy based on VSG is proposed, i.e., the frequency proportional-integral (PI) module feedback is used to replace the traditional damping module. It will eliminate the frequency deviation of Micro-grid in island mode and realize the Micro-grid inverter to work in multi-mode control. The simulation results show that the effectiveness of the presented VSG based frequent deviation-free control strategy.

关键词： Micro-grid Virtual synchronous generator Smooth switching Frequent deviation-free

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Graph Model for Conflict Resolution in the Information Sharing Conflict of the Fourth Party Logistics 29

Graph Model for Conflict Resolution in the Information Shari...

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第29届中国控制与决策会议

作者： Di Liu Hanbin Kuang Min Huang College of Information Science and Engineering Northeastern University

ISBN: (纸本)9781509046584

With the rapid development of modern logistics industry,the fourth-party logistics develops as an integrator of supply chain services for *** the same time,information sharing conflict arises among the fourth-party logistics,the third-party logistics,customers and local government,because the third-party logistics may still be hesitant to share information with the fourth-party *** methodology of the graph model for conflict resolution is used to systematically analyze the information sharing *** makers and the options of the decision makers involved in the conflict are provided in this *** the preferences for decision makers over the states of the conflict model are analyzed and then the equilibria for the model are calculated by using the decision support system *** that,a through strategy analysis reveals the potential evolution path of the conflict and the important decision strategy for the fourth-party logistics and the local government.

关键词： Graph Model for Conflict Resolution Status Quo Analysis Supply Chain Management the Third-Party logistics the Fourth-Party logistics Stability Analysis

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A Novel Repetitive Iterative Learning control for Linear Discrete-Time systems with Time-Iteration-Varying Reference 6

A Novel Repetitive Iterative Learning Control for Linear Dis...

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2017 ieee 6th Data Driven control and Learning systems conference (DDCLS’17)

作者： Qiao Zhu School of Mechanical Engineering Southwest Jiaotong University

ISBN: (纸本)9781509054626

The purpose of this work is to improve the tracking performance of the iterative learning control(ILC) by designing a new learning law that has the ability to update the input along both the time and iterative axes. First, the reference is generated by a high-order internal model(HOIM) along the iterative axis and can be approximated by an HOIM along the time axis. Then,the HOIM-based repetitive control(RC) and ILC design methods are introduced, which can update the input along the time and iterative axes, respectively. Inspired by the design methods of the HOIM-based RC and ILC, a new ILC scheme, named as repetitive iterative learning control(RILC), is constructed by incorporating both the HOIMs of the reference along the time and iterative axes. Due to the additional use of the time-varying information of the reference, it is verified that the RILC is superior to the ILC. Finally, a microscale robotic deposition system is given to illustrate the advantage of the proposed RILC scheme.

关键词： Iterative learning control Repetitive control Linear discrete-time systems Time-iteration-varying reference High-order internal models

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Real-time s-scan imaging reconstruction for ultrasonic phase array based on CORDIC and sectorial interpolation algorithms 13

Real-time s-scan imaging reconstruction for ultrasonic phase...

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2017 13th ieee international conference on Electronic Measurement & Instruments (ICEMI)

作者： Tang Wenming Liu Guixiong Li Yuzhong Tan Daji School of Mechanical & Automotive Engineering South China University of Technology

ISBN: (纸本)9781509050369;9781509050352

In the sectorial scan(S-scan) view of the ultrasound phase array system, the echo data produced from the ultrasonic sensors usually are acquired in the polar coordinates, but need to be displayed in the Cartesian coordinates, which can then realize image reconstruction with pixel filling technology. To effectively perform coordinate conversion and improve the smooth and detailed regions of the ultrasonic S-scan image, herein we propose an algorithm of performing coordinate conversion with the interpolation by using the Radix4-CORDIC and sectorial interpolation technology. The algorithm is validated according to the implementation of FPGA technology, and the results demonstrate the algorithm has good real-time performance and can greatly improve the quality of the S-scan image.

关键词： S-scan Radix4-CORDIC sectorial interpolation Image reconstruction Real-time

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Minimum current injection method for single-phase dynamic voltage restorer

Minimum current injection method for single-phase dynamic vo...

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2017 ieee Transportation Electrification conference and Expo, Asia-Pacific, ITEC Asia-Pacific 2017

作者： Yuan, Shuai Chen, Alian Pan, Yiwei Zhang, Chenghui School of Control Science and Engineering Shandong University Jinan China

ISBN: (纸本)9781538628942

In this paper, a simple limited current injection method is proposed for the operation of DVR under grid voltage deep sags. The proposed method considers the impact of couplings between load power factor and grid voltage sag depth to calculate the minimum injection current that can preserve satisfaction grid voltage compensation under deep sags, Accordingly, the over current tripping off problems for DVR operating during deep sags can be significantly alleviative. In addition, the approach in this paper has the capability to simultaneously compensate grid voltage harmonics without using additional efforts. Verification results are provided to validate the correctness of the proposed system. © 2017 ieee.

关键词： Voltage regulators

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