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Domain of Attraction's Estimation for Grid Connected Converters With Phase-Locked loop

IEEE TRANSACTIONS ON POWER SYSTEMS 2022年第2期37卷 1351-1362页

作者： Zhang, Ziqian Schuerhuber, Robert Fickert, Lothar Friedl, Katrin Chen, Guochu Zhang, Yongming Graz Univ Technol Inst Elect Power Syst A-8010 Graz Austria Shanghai Dianji Univ Shanghai 201306 Peoples R China

A large number of non-linear hardware and control units exists in power electronic system used in grid connected devices. The analytical transient stability analysis of grid-connected converters presents numerous difficulties. A common method to tackle this problem is the stability analysis using Lyapunov's method. By applying this method, difficulties arise not only from finding a suitable Lyapunov function, but also from checking the constraint of Lyapunov stability. If the appropriate Lyapunov function is a high-order polynomial, it is very challenging to test if it meets the constraints of Lyapunov stability in certain regions. In this paper, the sum-of-squares programming method is used to obtain the estimation of a converter's domain of attraction with a relatively small number of iterations compared to classically applied methods, such as the Monte Carlo method. The estimation of the domain of attraction are verified by time-domain simulations and StarSim's controller hardware-in-the-loop tests in this paper.

关键词： Phase locked loops Direction-of-arrival estimation Power system stability Estimation Mathematical model Transient analysis Analytical models Converter stability phase-locked loop transient stability Lyapunov method domain of attraction sum-of-squares controller hardware-in-the-loop

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Design and HIL Testing of a Hybrid UPS with Seamless Transition

Design and HIL Testing of a Hybrid UPS with Seamless Transit...

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IEEE-Power-and-Energy-Society General Meeting (PESGM)

作者： Qiu, Dawei Uda, Satoshi Kashihara, Hironori Fukuda, Yuki Okazaki, Naoya Nishimura, Shoji Kawasaki, Yoshinori Gao, Fei Ali, Syed Q. Paquin, J. N. Nissin Elect Kyoto Japan OPAL RT Technol Montreal PQ Canada

ISBN: (纸本)9781728119816

Rotating emergency generators (EG) have been increasingly installed to provide backup power in cases of blackouts. However, conventional rotating generators cannot provide fast pickup of load as soon as a blackout is detected. The paper presents a hybrid UPS system based on a battery energy storage system (BESS) and a rotating EG that can provide Class 2 response to the load during the power transfers between the load and the utility as per the Japanese standard on UPS JEC2433-2016. The same idea is also shown to work for cost savings by switching to backup power for areas with multi-part or time-of-use tariffs. The design process including controller hardware in the loop (CHIL) testing with real time simulators is also presented as it makes the design process more efficient. The process was used to test compliance with JEC2433-2016 in addition to speeding up the controller validation and testing step in the product design and development cycle. The proposed hybrid UPS is validated using CHIL and hardware testing.

关键词： Battery energy storage system controller hardware-in-the-loop emergency generator hybrid UPS real-time simulation seamless transfer.

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Advanced Load Shedding for Integrated Power and Energy Systems

Advanced Load Shedding for Integrated Power and Energy Syste...

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IEEE Electric Ship Technologies Symposium (ESTS)

作者： Nguyen, Bang L. H. Vu, Tuyen Ogilvie, Colin Ravindra, Harsha Stanovich, Mark Schoder, Karl Steurer, Michael Konstantinou, Charalambos Ginn, Herbert Schegan, Christian Clarkson Univ Elect & Comp Engn Dept Potsdam NY 13699 USA Florida State Univ Ctr Adv Power Syst Tallahassee FL 32306 USA Univ South Carolina Elect Engn Dept Columbia SC 29208 USA Naval Surface Warfare Ctr Philadelphia Philadelphia PA USA

ISBN: (纸本)9781728184265

This paper introduces an advanced load shedding algorithm to improve the operability performance of a medium voltage direct current (MVDC) integrated shipboard power and energy system. Outcomes are compared to a baseline algorithm while considering power generation contingency scenarios. The case study is conducted with a real-time, embedded algorithm implementation using a control hardware-in-the-loop (CHIL) setup.

关键词： Control evaluation Integrated power and energy systems controller hardware-in-the-loop

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A Novel Approach in Evaluating Battery Charger controller Design with Nonlinear PID controller for an Extendable CHIL Setup

A Novel Approach in Evaluating Battery Charger Controller De...

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Transportation Electrification Conference and Expo (ITEC)

作者： Rad, Shervin Salehi Muhlbaier, Micheal Fishman, Oleg Chevinly, Javad Nadi, Elias Zhang, Hua Lu, Fei Drexel Univ Dept Elect & Comp Engn Philadelphia PA 19104 USA Alencon Syst LLC Engn Philadelphia PA USA Alencon Syst LLC Board Directors Philadelphia PA USA Rowan Univ Dept Elect & Comp Engn Glassboro NJ USA

ISBN: (纸本)9798350317671;9798350317664

The design and development of power electronics converters pose a multitude of challenges. The evaluation of power electronics converters, particularly when operating at high power levels, presents a significant task, offering designers a deeper understanding of the functionality. Several methodologies have been devised to conduct hardware-in-the-loop (HIL) tests, which are classified into two main categories: controller hardware-in-the-loop (CHIL) and power hardware-in-the-loop (PHIL) tests. This paper explores the advantages and drawbacks of these two approaches and introduces a straightforward and cost-effective CHIL method for initial proof of concept and risk-free controller training. This method is based on the interaction between MATLAB/Simulink and Python. To assess the operation of the proposed system, a modeled battery pack (96S1P) is charged using a modeled battery charger converter, employing a non-linear PID controller. In this scenario, the controller benefits from the CC-CV technique for charging the battery pack. The results are presented in the final section.

关键词： hardware-in-the-loop Battery charger controller hardware-in-the-loop Power hardware-in-the-loop

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Distributed Secondary Frequency Control in AC Microgrids with Lossy Electrical Networks

Distributed Secondary Frequency Control in AC Microgrids wit...

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IEEE-Power-and-Energy-Society General Meeting (PESGM)

作者： Nigam, Siddhartha Ajala, Olaoluwapo Zholbaryssov, Madi Dominguez-Garcia, Alejandro D. Sauer, Peter W. Univ Illinois ECE Urbana IL 61801 USA

ISBN: (纸本)9781728155081

This paper presents a distributed control scheme for achieving secondary frequency control in AC microgrids. The control scheme is designed for microgrid electrical networks comprised of distribution lines with equal/unequal resistance to reactance ratio;in other words, it works well even when ohmic losses are taken into account in the electrical network. The control problem is formulated and an overview of the proposed distributed secondary frequency control scheme is provided. A criterion for choosing controller gains that stabilize the system frequency is also provided. Finally, results on the testing of the control scheme on a controller hardware-in-the loop (C-HIL) testbed are provided.

关键词： Lossy Microgrid Distributed secondary frequency control controller hardware-in-the-loop

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Advancements on Real-Time Simulation for High Switching Frequency Power Electronics Applications (Invited Paper) 21

Advancements on Real-Time Simulation for High Switching Freq...

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21st International Symposium on Power Electronics (Ee)

作者： Osorio, Caio R. D. Miletic, Milos Zelic, Jovan Majstorovic, Dusan Gagrica, Ognjen Typhoon HIL Inc Novi Sad Serbia

ISBN: (纸本)9781665401876

This paper presents an outlook about controller hardware-in-the-loop technology and how recent advancements in time resolution improved real-time simulation accuracy for testing high switching frequency power electronics applications. To illustrate that, the control of a dual active bridge converter (DAB) is taken as an example. The DAB converter is emulated on Typhoon HIL device, while the control algorithm is implemented on a digital signal processor from Texas Instruments. Real-time simulations are performed, highlighting the increased precision of the results obtained with the novel switch-level gate-drive signal oversampling.

关键词： controller hardware-in-the-loop dual active bridge time resolution power electronics real-time simulation

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CHIL Testbed of Consensus Control-Based Battery Energy Storage Systems 52

CHIL Testbed of Consensus Control-Based Battery Energy Stora...

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52nd North American Power Symposium (NAPS)

作者： Li, Yin Fan, Lingling Bao, Li Miao, Zhixin Univ S Florida Dept Elect Engn Tampa FL 33620 USA

ISBN: (纸本)9781728181929

Consensus control has been proposed by our prior research to operate multiple battery energy storage systems (BESS). The objective of this paper is to validate the performance of consensus control using a controller-hardware-in-the-loop (CHIL) testbed. This paper describes the system topology and the setup process of this testbed. The testbed emulates a microgrid with three parallel BESS connected to the IEEE-9 bus system. The circuit part is simulated in real-time simulator while the control systems for BESS are implemented in three FPGA-based controllers. Using this testbed, the consensus control was tested under both of grid-connected mode and autonomous mode.

关键词： Consensus control battery energy storage system controller hardware-in-the-loop microgrid distributed control FPGA-based controller

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Topology-Aware Distributed Smart Grid Control using a Clustering-Based Utility Maximization Approach 20

Topology-Aware Distributed Smart Grid Control using a Cluste...

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35th Annual ACM Symposium on Applied Computing (SAC)

作者： Stuebs, Marius Ipach, Hanko Becker, Christian Univ Hamburg Hamburg Germany Hamburg Univ Technol Hamburg Germany

ISBN: (纸本)9781450368667

Efficiently balancing supply and demand in the electrical distribution grid is an important Smart Grid service. The development of applicable agent-based concepts for match-making energy generators with consumers is an active research field. Implementing Smart Grids as a system of Micro Grid systems, we propose an efficient decentralized optimization scheme, which avoids central components in order to increase dependability, robustness against communication failures, and denial-of-service attacks. The concept utilizes traditional peer-to-peer functionality in combination with locality-aware routing: Two explicit clusterings are evaluated awl compared to the fully-meshed communication approach. We investigate the impact of node clustering on the optimality and locality of the distributed Smart Grid control algorithm and show that our approach significantly reduces the electrical losses in the examined power distribution grid compared to the centralized approach.

关键词： Smart Grids System of Systems Cyber-Physical System Distributed Control Algorithm Topological Clustering Utility Maximization Resilience controller hardware-in-the-loop Iterative Optimization Electrical Power Balancing

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Islanding of a Microgrid Using a Distributed Multi-agent Control System 11

Islanding of a Microgrid Using a Distributed Multi-agent Con...

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11th Annual IEEE Energy Conversion Congress and Exposition (ECCE)

作者： Al Jajeh, Mohamad Fares Ali, Syed Qaseem Joos, Geza Novickij, Ilja McGill Univ Dept Elect & Comp Engn Montreal PQ Canada OPAL RT TECHNOL Inc Applicat eXpertise & Elect Simulat Div AXES Montreal PQ Canada

ISBN: (纸本)9781728103952

The use of distributed control systems for microgrid control has gained traction in recent years for their reliability and modularity. As part of microgrid control core functions, islanding is implemented to enhance power supply reliability during outages. This paper proposes a distributed multi-agent control system architecture for the management of microgrid assets. Specifically, it addresses the islanding problem, whereas three agent categories are designed to control distributed energy resources, loads and other assets. The proposed control approach is unique as it centrally sources critical commands while keeping the commands execution local and based on distributed coordination. Post-islanding transients are minimized and system stability is retained by implementing two distributed load shedding and load curtailment algorithms for unplanned and planned islanding events, respectively. A controller hardware-in-the loop real-time simulation on a modified CIGRE North American medium voltage distribution benchmark has been developed and used to demonstrate the effectiveness of the approach.

关键词： microgrid distributed control system multi-agent system islanding controller hardware-in-the-loop

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hardware-In-the-loop Simulation of a Step-Up Converter Using the GDS Oversampling Technique in a Microcontroller 8

Hardware-In-the-Loop Simulation of a Step-Up Converter Using...

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8th Southern Power Electronics Conference and the 17th Brazilian Power Electronics Conference, SPEC / COBEP 2023

作者： Sotero, Matheus Barbosa Rolim, Luís Guilherme Programa de Engenharia Elétrica Coppe Universidade Federal Do Rio de Janeiro Rio de Janeiro Brazil

ISBN: (纸本)9798350321128

The objective of this work is the implementation and experimental validation of a high frequency sampling technique for switch gate drive signals, known as Gate Drive Signal Over-sampling (GDS Oversampling). This technique allows a static power converter to be simulated in real time with an integration step of the same order of magnitude as the switching period. The implementation is carried out in a Texas Instruments F28379D microcontroller, and for validation purposes a hardware-In-the-loop (HIL) simulation of a Step-Up converter is performed. In this HIL configuration, one core of the microcontroller is responsible for simulating the converter, using an average model, while the other core is responsible for controlling the converter. Finally, the obtained results are compared with an offline simulation carried out entirely in PSIM. © 2023 IEEE.

关键词： controller hardware-in-the-loop converter simulation GDS oversampling hardware-in-the-loop microcontroller realtime simulation

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