A novel fault-tolerant operation approach for the modular multilevel converter-based STATCOM with the enhanced operation capability

IEEE Journal of Emerging and Selected Topics in Power Electronics

Published On 2022/2/15

The operation capability of the modular multilevel converter (MMC)-based static synchronous compensator (STATCOM) is limited under submodule (SM) failures. When running in the STATCOM mode, the floating dc-link voltage of the MMC is adjustable. Therefore, this article proposes a novel fault-tolerant operation approach to enhance the operation capability of the MMC under severe SM failures. First, the dc-link voltage is dynamically regulated under SM failures, where the capacitor voltages of all SMs are slightly increased. The modulation ranges of the faulty and healthy phases can be enlarged, and the even voltage stress distribution can be realized. Then, a low-magnitude fundamental frequency zero-sequence voltage (FF-ZSV) is injected to balance the line-to-line voltages. Finally, the virtual energy idea is proposed, where the capacitor voltages of faulty SMs are considered to be clamped at the reference …

Journal

IEEE Journal of Emerging and Selected Topics in Power Electronics

Published On

2022/2/15

Volume

10

Issue

5

Page

5541-5552

Authors

Remus Teodorescu

Remus Teodorescu

Aalborg Universitet

Position

Professor at

H-Index(all)

104

H-Index(since 2020)

72

I-10 Index(all)

0

I-10 Index(since 2020)

0

Citation(all)

0

Citation(since 2020)

0

Cited By

0

Research Interests

Power Electronics

Smart Batteries

AI

University Profile Page

Josep Pou

Josep Pou

Nanyang Technological University

Position

H-Index(all)

67

H-Index(since 2020)

53

I-10 Index(all)

0

I-10 Index(since 2020)

0

Citation(all)

0

Citation(since 2020)

0

Cited By

0

Research Interests

Power Electronics

Multilevel Converters

Renewable Energy

Energy Storage

University Profile Page

Qian Xiao

Qian Xiao

Tianjin University

Position

Assitant Professor

H-Index(all)

15

H-Index(since 2020)

15

I-10 Index(all)

0

I-10 Index(since 2020)

0

Citation(all)

0

Citation(since 2020)

0

Cited By

0

Research Interests

Microgrids

DC Distribution Network

Multilevel Converters

BESS

Energy Router

University Profile Page

Yu Jin

Yu Jin

Harbin Institute of Technology

Position

H-Index(all)

10

H-Index(since 2020)

10

I-10 Index(all)

0

I-10 Index(since 2020)

0

Citation(all)

0

Citation(since 2020)

0

Cited By

0

Research Interests

Multilevel converters

Battery energy storage system

FACTs

University Profile Page

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Josep Pou

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Yu Jin

Yu Jin

Harbin Institute of Technology

IET Energy Systems Integration

A simplified control parameter optimisation method of the hybrid modular multilevel converter in the medium‐voltage DC distribution network for improved stability under a weak …

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Josep Pou

Josep Pou

Nanyang Technological University

IEEE Transactions on Power Electronics

Asymmetrical-Bidirectional Input-Series–Output-Parallel Modular DC–DC Converter in DC Distribution Grids With Renewables

Asymmetrical-Bidirectional Input-Series–Output-Parallel Modular DC–DC Converter in DC Distribution Grids With Renewables - NASA/ADS Now on home page ads icon ads Enable full ADS view NASA/ADS Asymmetrical-Bidirectional Input-Series–Output-Parallel Modular DC–DC Converter in DC Distribution Grids With Renewables Sun, Changjiang ; Wang, Shuai ; Pou, Josep ; Gajanayake, Chandana Jayampathi ; Gupta, Amit Kumar Abstract Publication: IEEE Transactions on Power Electronics Pub Date: April 2024 DOI: 10.1109/TPEL.2023.3329775 Bibcode: 2024ITPE...39.3943S full text sources Publisher | © The SAO/NASA Astrophysics Data System adshelp[at]cfa.harvard.edu The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A NASA logo Smithsonian logo Resources About ADS ADS Help What's New Careers@ADS Social @adsabs ADS …

Josep Pou

Josep Pou

Nanyang Technological University

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Josep Pou

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Nanyang Technological University

IEEE Transactions on Power Electronics

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Remus Teodorescu

Remus Teodorescu

Aalborg Universitet

IEEE Transactions on Industrial Electronics

Health Prediction for Lithium-Ion Batteries Under Unseen Working Conditions

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Remus Teodorescu

Remus Teodorescu

Aalborg Universitet

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Remus Teodorescu

Remus Teodorescu

Aalborg Universitet

Artificial Intelligence-Based State-of-Health Estimation of Lithium-Ion Batteries

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Remus Teodorescu

Remus Teodorescu

Aalborg Universitet

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Remus Teodorescu

Remus Teodorescu

Aalborg Universitet

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Remus Teodorescu

Remus Teodorescu

Aalborg Universitet

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Remus Teodorescu

Remus Teodorescu

Aalborg Universitet

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Remus Teodorescu

Remus Teodorescu

Aalborg Universitet

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Remus Teodorescu

Remus Teodorescu

Aalborg Universitet

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Remus Teodorescu

Remus Teodorescu

Aalborg Universitet

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Remus Teodorescu

Remus Teodorescu

Aalborg Universitet

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Nanyang Technological University

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Remus Teodorescu

Remus Teodorescu

Aalborg Universitet

Fractional-order control techniques for renewable energy and energy-storage-integrated power systems: A review

The worldwide energy revolution has accelerated the utilization of demand-side manageable energy systems such as wind turbines, photovoltaic panels, electric vehicles, and energy storage systems in order to deal with the growing energy crisis and greenhouse emissions. The control system of renewable energy units and energy storage systems has a high effect on their performance and absolutely on the efficiency of the total power network. Classical controllers are based on integer-order differentiation and integration, while the fractional-order controller has tremendous potential to change the order for better modeling and controlling the system. This paper presents a comprehensive review of the energy system of renewable energy units and energy storage devices. Various papers are evaluated, and their methods and results are presented. Moreover, the mathematical fundamentals of the fractional-order method are mentioned, and the various studies are categorized based on different parameters. Various definitions for fractional-order calculus are also explained using their mathematical formula. Different studies and numerical evaluations present appropriate efficiency and accuracy of the fractional-order techniques for estimating, controlling, and improving the performance of energy systems in various operational conditions so that the average error of the fractional-order methods is considerably lower than other ones.

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IEEE Journal of Emerging and Selected Topics in Power Electronics

A Non-clamped H10 Topology to Achieve Leakage Current Reduction for Transformerless Grid-Connected Converter

Due to the advantages of smaller size and lower cost, transformerless grid-connected converter (GCC) has been widely used in photovoltaic (PV) power generation system. But this may incur obviously leakage current, which is related to the common-mode voltage (CMV) of the GCC. Topology improvement by adding additional switches is an effective way to reduce CMV, i.e., H7, H8 and H10 topologies. However, some topologies suffer from high leakage current and low power quality of the grid current. To solve those problems, based on the existing H8 topology, this article proposed a non-clamped H10 (NCH10) topology. First, the large variation in CMV of H8 topology is analyzed by using complex frequency-domain model. Second, a NCH10 topology which could achieve a 66.7% reduction in CMV is proposed. Finally, the PWM control signals based on novel logic functions are established. Compared to H10 …

Bowen Yang

Bowen Yang

University of Georgia

IEEE Journal of Emerging and Selected Topics in Power Electronics

A Four-layer Cyber-physical Security Model for Electric Machine Drives considering Control Information Flow

Despite the IEEE Power Electronics Society (PELS) establishing Technical Committee 10 on Design Methodologies with a focus on the cyber-physical security of power electronics systems, a holistic design methodology for addressing security vulnerabilities remains underdeveloped. This gap largely stems from the limited integration of computer science and power/control engineering studies in this interdisciplinary field. Addressing the inadequacy of unilateral cyber or control perspectives, this paper presents a novel four-layer cyber-physical security model specifically designed for electric machine drives. Central to this model is the innovative Control Information Flow (CIF) model, residing within the control layer, which serves as a pivotal link between the cyber layer’s vulnerable resources and the physical layer’s state-space models. By mapping vulnerable resources to control variable space and tracing attack …

Hao Feng

Hao Feng

North Carolina State University

IEEE Journal of Emerging and Selected Topics in Power Electronics

Condition Monitoring of Discrete Power Devices: A Data-Driven Approach with Stress Quantification and Mold Temperature Sensing

Discrete power devices are used in a wide range of applications some of which would benefit from device condition monitoring (CM). This paper presents a data-driven method to online evaluate the health status of the discrete devices. It is based on the detection of mold temperature by only one thermocouple, offering low cost and non-intrusive features. The approach looks into five electrical stressors and uses existing sensors to track the load variation, enabling adaptation to both linear or nonlinear load conditions of the inverter system; no additional sampling of electrical signal is required. Under the tracked electrical stresses, a back-propagation neural network (BPNN) is employed to establish the correlation between mold temperature and aging status. The overall design and implementation process, including the hardware design, model training and CM integration, are demonstrated on a 7.5 kW T-type Neutral …

Mohamad Ghaffarian Niasar

Mohamad Ghaffarian Niasar

Technische Universiteit Delft

IEEE Journal of Emerging and Selected Topics in Power Electronics

Optical Detection and Characteristics of PCB Partial Discharge in More-electric Aircraft under Square Wave Voltage

More electric aircraft (MEA) is an important direction for future aircraft development. The printed circuit boards (PCB) of power electronics equipment in MEA operates in a complex environment of low air pressure, square wave voltage, compact layout and strong electromagnetic interference, which makes the PCB more prone to partial discharge (PD). However, the effective detection method and related discharge characteristics for PCB PD under square wave voltage are still unclear. Therefore, this paper proposes a PCB PD detection method based on fluorescent optical fiber, which has good anti-electromagnetic interference ability. The PD characteristics of the PCB with three typical structures under three air pressures are studied, including PD non-breakdown characteristics, changes in optical pulse amplitude and pulse repetition rate during PD aging, PD breakdown path analysis and PCB surface electric field …

Haoze Luo

Haoze Luo

Aalborg Universitet

IEEE Journal of Emerging and Selected Topics in Power Electronics

A 3-D Temperature-Dependent Thermal Model of IGBT Modules for Electric Vehicle Application Considering Various Boundary Conditions

With the development of power electronic converters (PECs), the thermal properties of high-power insulated gate bipolar transistor (IGBT) module are of significant importance in the reliability analysis, thermal design, and management of PECs. However, the present commonly used three-dimensional (3-D) thermal network model, still has limitations in accurately obtaining the junction temperature of IGBT modules. Particularly under high-temperature conditions, its performance is not ideal. This paper proposes a 3-D thermal network model considering the temperature effect of constituent materials, which has been efficiently obtained using four sets of finite element method (FEM) transient thermal simulation. By employing a two-step extraction (TPE) method, the thermal parameters including the conductance and capacitance of crucial nodes are fully identified based on the reconstruction matrix of virtual temperature …

Zhang Xin

Zhang Xin

Zhejiang University

IEEE Journal of Emerging and Selected Topics in Power Electronics

STAR: One-Stop Optimization for Dual Active Bridge Converter with Robustness to Operational Diversity

In the fast-evolving landscape of artificial intelligence (AI) technology, significant strides have been taken to streamline and automate the design of power converters. However, prevalent limitations in existing AI-aided design approaches underscore the need for innovative solutions. Firstly, a lack of robustness to operational diversity hampers adaptability, requiring a complete AI model building from scratch when conditions, modulation strategies, or performance metrics for evaluation change. Secondly, the challenging trade-off between dataset size and design accuracy prolongs data acquisition through hardware experiments. Thirdly, the industry faces reluctance to adopt pure data-driven approaches due to their inherent lack of fundamental and explainable circuit insights. Addressing these challenges, this paper introduces a one-stop optimization methodology, the STAR methodology, tailored for designing …

王奎, Kui Wang

王奎, Kui Wang

Tsinghua University

IEEE Journal of Emerging and Selected Topics in Power Electronics

A Simple Method for Common-Mode Voltage Reduction and Neutral-Point Potential Balance of Back-to-Back Three-Level NPC Converters

Common-mode voltage (CMV) is harmful to the motor bearing in converter systems. In order to reduce the high amplitude CMV and balance the neutral-point potential (NPP) of back-to-back three-level neutral-point clamped (NPC) converters, a simple dual-side zero-sequence voltage (ZSV) injection method based on carrier-based pulse-width modulation (CBPWM) is proposed in this paper. Two optimal ZSVs are injected into the rectifier side and inverter side respectively, which can reduce the amplitude of CMV to 1/6 of the DC-bus voltage and balance the NPP effectively at the same time. This proposed method based on CBPWM is much easier to be implemented compared with the SVPWM-based method. Experimental results demonstrate the effectiveness of the proposed method.

Ranjan Kumar Behera

Ranjan Kumar Behera

Indian Institute of Technology Patna

IEEE Journal of Emerging and Selected Topics in Power Electronics

Advance Controller for Power Quality and Performance Improvement of Grid-Connected Single-Phase Rooftop PVS

This paper presents a robust controller for a single-phase single-stage photovoltaic systems (PVS) converter connected to the grid. A high efficiency single-phase single-stage converters are prone to double frequency oscillations and DC-link voltage fluctuations when connected to a PVS. It introduces phase shift and injects harmonics in the grid current. To address this issue, a robust DC-link voltage controller is proposed. It can achieve fast transient response with lesser overshoot under power intermittency and grid side disturbances. A filter is employed to reduce the impact of switching frequency, however, a Lyapunov-based inner loop current controller with an active damping method minimizes the effect of resonance and achieves system stability. The proposed composite controller guarantees the system robustness against grid disturbances and parameter uncertainties. In addition, it eliminates the effect of …

Zhedong Ma

Zhedong Ma

University of Florida

IEEE Journal of Emerging and Selected Topics in Power Electronics

Integration of Near Field Communication (NFC) Antenna and Wireless Charging Coil for Portable Electronic Products

In portable electronics applications, although near-field communication (NFC) works at 13.56MHz and wireless charging (WLC) works at from 87kHz-205kHz, the efficient integration of NFC antenna coil and WLC receiver coil can reduce the volume and cost of portable electronic equipment. In this paper, a novel NFC and WLC coil integration technology is proposed based on the wide-band impedance models of the coil. The circuit model of the proposed integrated coil is developed. Based on the developed model, the technique to improve NFC inductance’s effective frequency range is investigated. Furthermore, the physical meaning of the NFC inductance and its magnetic field distribution is analyzed. Finally, the proposed integrated coil is experimentally validated.