检索结果-内蒙古大学图书馆

modular multilevel matrix converter as Solid State Transformer for Medium and High Voltage AC Substations

IEEE TRANSACTIONS ON POWER DELIVERY 2022年第6期37卷 5033-5043页

作者： Bravo, Pablo Pereda, Javier Merlin, Michael M. C. Neira, Sebastian Green, Timothy C. Rojas, Felix Pontificia Univ Catolica Chile Dept Elect Engn Santiago 7820436 Chile Pontificia Univ Catolica Chile UC Energy Res Ctr Santiago 7820436 Chile Univ Edinburgh Sch Engn Inst Energy Syst Edinburgh EH8 9YL Midlothian Scotland Univ Edinburgh Sch Engn Edinburgh EH8 9Y1 Midlothian Scotland Imperial Coll Dept Elect & Elect Engn London SW7 2BX England

The use of power converters as solid state transformers is an attractive solution to modernize the power network, but this solution has not been fully addressed for MV and HV substations. This paper presents a customized and simple control for the modular multilevel matrix converter (M3C), specially conceived for its operation on synchronous ports, which is the case of AC substations. The control allows bidirectional power transfer, generation/absorption of reactive power and provisions of ancillary services. The converter is compared to the back-to-back modular multilevel converter (B2B-MMC) where the key performance indicators to carry out the comparison are power efficiency, number of semiconductor devices, passive components required, footprint, voltage cell balance, fault blocking capability and stress of components. The simulation results show the features, performance and attractiveness of the M3C topology in a 33/11 kV, 16 MW substation under different operating conditions, including grid faults and dynamic operation. The M3C presents similar efficiency and performance than the B2B-MMC, but it uses fewer semiconductor devices, passive components and total cell capacitor energy than the B2B-MMC, reducing cost and footprint. The experimental results show the performance of the M3C under less ideal conditions including a substation transformer saturation and power step response.

关键词： modular multilevel matrix converter solid state transformer AC-AC power conversion power distribution smart substation smart grid

来源：评论

学校读者我要写书评

暂无评论

Deadbeat Model Predictive Control for modular multilevel matrix converter Under Unbalanced Grid Conditions

引用

IEEE TRANSACTIONS ON POWER ELECTRONICS 2025年第1期40卷 1258-1271页

作者： Gong, Zheng Zhang, Lianchang Liu, Chongwen Yang, Zhen Wu, Xiaojie China Univ Min & Technol Sch Elect Engn Xuzhou 221116 Peoples R China

The modular multilevel matrix converter (M3C) is a power converter used to directly connect two three-phase ac systems, with the advantages of modularity, scalability, and high redundancy. Conventional finite control set model predictive control (FCS-MPC) exhibits fast dynamic responses for the control of the M3C. However, its irregular pulse patterns lead to an unfixed switching frequency and larger ripples. In this article, a deadbeat model predictive control (DB-MPC) algorithm for the M3C is proposed to achieve a fixed switching frequency, lower current harmonic content, and lower computational burden, with the rapidity of the FCS-MPC preserved. Based on the proposed DB-MPC, a control strategy for the M3C under unbalanced grid conditions is proposed. The strategy aims to suppress the grid current distortions by maintaining constant grid active power, thus ensuring the power supply quality. Finally, the feasibility and effectiveness of the proposed strategy is verified by the experimental results obtained from a downscaled prototype consisting of 27 submodules.

关键词： Capacitors Voltage control Prediction algorithms Switches Switching frequency Predictive control Control systems Heuristic algorithms Gold Frequency control Deadbeat model predictive control modular multilevel matrix converter unbalanced grid conditions

来源：评论

学校读者我要写书评

暂无评论

Electromechanical Transient Modeling of the Low-Frequency AC System With modular multilevel matrix converter Stations

引用

IEEE TRANSACTIONS ON POWER SYSTEMS 2024年第1期39卷 921-933页

作者： Yu, Zheyang Zhang, Zheren Xu, Zheng Zhejiang Univ Coll Elect Engn Hangzhou 310027 Peoples R China

This paper studies the electromechanical transient modeling of a low-frequency AC (LFAC) system with modular multilevel matrix converter (M3C) stations. Firstly, the mathematical model of the M3C and its equivalent circuits are established. Then, an iterative power flow calculation algorithm for AC systems integrated with the M3C-LFAC system is developed. The dynamic model of the M3C for electromechanical transient simulation is studied and implemented in PSS/E. Based on a test system consisting of two asynchronousACsystemswith an embeddedM3C-LFAC system, comparisons between the electromechanical transient simulation results fromPSS/E and the electromagnetic transient simulation results from PSCAD are conducted. The results from PSS/E and PSCAD coincide with each other well, and the validity of the established electromechanical transient model is proved. Lastly, a stability study of a modified New England 39-bus system with an embedded M3C-LFAC system is executed, and the characteristics of the M3C-LFAC system are presented.

关键词： Electromechanical transient modeling power flow calculation power system stability modular multilevel matrix converter low-frequency AC

来源：评论

学校读者我要写书评

暂无评论

A Novel Harmonic State-space Modelling Method on the modular multilevel matrix converter and Coupling Analysis

引用

CSEE Journal of Power and Energy Systems 2025年第1期11卷 78-90页

作者： Jing Li Boyang Zhao Shenquan Liu Jie Li Xiuli Wang Xifan Wang Shaanxi Key Laboratory of Smart Grid in Xi'an Jiaotong University School of Electrical EngineeringXi'an Jiaotong UniversityXi'an710049China School of Electric Power Engineering South China University of TechnologyGuangzhou510641China

The fractional frequency transmission system is an emerging technology for long-distance wind power integration,and the modular multilevel matrix converter(M3C)is the keen *** the M3C directly connects two ac grids with different frequencies,the external and internal harmonics have complex coupling relationships with a unique dual-fundamental-frequency spectrum,which has not been properly investigated due to a lack of an effective *** address this issue,a novel harmonic state-space method is proposed to achieve comprehensive modelling of the harmonic dynamics of the *** on the principle of two-dimensional Fourier transform,the decomposition of the dual-fundamental-frequency harmonics is realized,and the multiplicative coupling between time-domain variables is modelled through double-layer convolution on the frequency ***,the general expression of the proposed method is provided,which highlights a modularized matrix with easy scalability to meet different truncation ***,the HSS model of M3C considering the close-loop control is established,based on which a panoramic harmonic coupling relationship between the system-and the low-frequency side is ***,the M3C model and harmonic coupling relationship are validated by simulation tests conducted in MATLAB/Simulink environment.

关键词： Harmonic state-space harmonic transmission modular multilevel matrix converter.Harmonic state-space harmonic transmission modular multilevel matrix converter

来源：评论

学校读者我要写书评

暂无评论

Direct Arm Energy Control of the modular multilevel matrix converter

引用

IEEE ACCESS 2023年 11卷 1793-1805页

作者： Utvic, Milan Bontemps, Philippe Dujic, Drazen Ecole Polytech Fed Lausanne EPFL Power Elect Lab CH-1015 Lausanne Switzerland

modular multilevel matrix converter is a type of converter used in medium-voltage ac-ac power conversion. Controlling the energy content of the converter arms is a prerequisite for a proper converter operation, and at the same time a challenging control task. So far, there are several approaches presented in the literature that successfully deal with the challenge. However, almost all of them fail when it comes to the simplicity of implementation, and ease of understanding by control engineers and researchers entering the field. This paper extends the direct arm energy control concept, already introduced for the class of modular multilevel converters, to the modular multilevel matrix converter. Presented control approach is characterized by an intuitive and simple implementation, ability to control the arm energies to arbitrary values, and stable operation under all operating conditions, including grid imbalances. Validity of the control concept was demonstrated using an in-house-developed hardware-in-the-loop simulator of the modular multilevel matrix converter, with control algorithms being deployed to the industrial-grade controller.

关键词： Voltage control matrix converters Frequency control Standards multilevel converters Capacitors Task analysis AC-to-AC converters Energy management Hardware-in-the-loop simulation modular multilevel converter modular multilevel matrix converter energy control hardware-in-the-loop ac-ac power conversion

来源：评论

学校读者我要写书评

暂无评论

Novel Distributed Control Platform and Algorithm for a modular multilevel matrix converter

引用

IEEE TRANSACTIONS ON POWER ELECTRONICS 2023年第7期38卷 8089-8101页

作者： Kienast, Jonas Hoffmann, Andreas Hoeer, Martin Bernet, Steffen Tech Univ Dresden Power Elect Grp D-01062 Dresden Germany Tech Univ Dresden Power Elect Grp Fak Elektrotech & Informat Tech D-01069 Dresden Germany

The modular multilevelmatrix converter (M3C) is an attractive topology for low-speed drives and doubly fed induction generator applications. Both modularity and scalability make the topology attractive for high-power medium-voltage systems. One of the main challenges for the design and implementation of an M3C is the control platform, which has to handle a high number of submodules and measured values. This article introduces a new control platform including a high-speed communication network between the distributed control units. The control platform and algorithms are implemented on a 15 kvar M3C test bench with 108 full-bridge submodules.

关键词： Distributed control high-speed comunication modular multilevel matrix converter

来源：评论

学校读者我要写书评

暂无评论

Control Strategy of modular multilevel matrix converter for Low Frequency Transmission System under Unbalanced Grid Conditions 7

Control Strategy of Modular Multilevel Matrix Converter for ...

引用

7th International Conference on Energy, Electrical and Power Engineering (CEEPE)

作者： Zhou, Qian Li, Qun Zhu, Dandan Cen, Bingcheng Jiangsu Elect Power Co Ltd Res Inst Nanjing Peoples R China

ISBN: (纸本)9798350375794;9798350375800

With the purpose of reducing the transmission loss of offshore wind energy, the LFTS came into being under the background of offshore wind power generation. However, When a fault occurs on the grid side, the capacitor voltage balance of (MC)-C-3 is destroyed, which seriously affects the safe operation of the LFTS. This paper mainly studies the control strategy of LFTS based on (MC)-C-3 in the event of asymmetric fault. This method can not only maintain the symmetry of the power frequency side current, but also maintain the balance of the sub-module capacitor voltage, which ensures the normal operation of the system. Firstly, the operation characteristics of (MC)-C-3 bridge arm under unbalanced conditions are analyzed. Then, the positive and negative sequence components on the grid side were separated using the T/4 delay algorithm, and the negative sequence currents were suppressed by the dual sequence control strategy. And the balance of capacitor voltage is achieved by controlling the injected loop current using the PR controller. Finally, the effectiveness of the proposed control strategy is verified by the (MC)-C-3 simulation results under grid fault.

关键词： Low frequency transmission system T/4 delay method modular multilevel matrix converter quasi-PR controller

来源：评论

学校读者我要写书评

暂无评论

Optimal Arm Current Reallocation of modular multilevel matrix converter Dedicated for Power Grid Interconnection

引用

IEEE TRANSACTIONS ON POWER DELIVERY 2022年第5期37卷 3477-3490页

作者： Liu, Shenquan Zhao, Boyang Chen, Yongan Wang, Gang Wang, Xifan South China Univ Technol Dept Elect Engn Guangzhou 510641 Peoples R China Xi An Jiao Tong Univ State Key Lab Elect Insulat & Power Equipment Xian 710049 Peoples R China

The modular multilevel matrix converter ((MC)-C-3) is the high-power three-phase to three-phase AC/AC converter of the next generation. However, when the (MC)-C-3 is applied for power grid interconnection, with equal or close input and output frequency, the current distribution in its nine arms becomes significantly uneven. Furthermore, the current distribution pattern is directly influenced by the randomly changing input-output angle-difference, forcing each arm to be designed based on the highest-possible current, which significantly increases the required semiconductor rating and converter cost. To address this issue, a novel current reallocation is proposed to attenuate the highest-possible arm current of (MC)-C-3. The equal-frequency operation of (MC)-C-3 is first modeled and analyzed, and the operation sweet-spot where each arm stays in natural energy balance is located. Then, the current reallocation is analytically derived for sweet-spot operation. By injecting proper circulating current, the highest-possible arm current is reduced by 13.4%, and the required circulating current component is analytically derived. The implementation method into the classic control structure of (MC)-C-3 is provided. Performance of the proposed strategy is validated by a simulation benchmark established in MATLAB/Simulink environment in the context of interconnection between two 220 kV/50 Hz power grids.

关键词： Gold Current distribution Capacitors matrix converters Analytical models Voltage control Power grids modular multilevel matrix converter AC AC conversion control

来源：评论

学校读者我要写书评

暂无评论

Control Strategy for Frequency Support Based on modular multilevel matrix converter with Emulation Inertia 8

Control Strategy for Frequency Support Based on Modular Mult...

引用

8th International Conference on Power and Renewable Energy, ICPRE 2023

作者： Li, Yibo Jiang, Yafeng Wu, Qiuwei Chen, Jian Zhou, Qian Shandong University College of Electrical Engineering Jinan China Tsinghua University Tsinghua Berkeley Shenzhen Institute Tsinghua Shenzhen International Graduate School Shenzhen China Research Institute State Grid Jiangsu Electric Power Co.Ltd. Nanjing China

ISBN: (纸本)9798350328813

Stabilized active power from an offshore wind farm is transmitted to the grid through a modular multilevel matrix converter (M3C), in which the M3C neutron module capacitor operates in a constant voltage state. In this paper, a control strategy based on the M3C to provide frequency support is proposed, which simulates the inertia by releasing the energy in the sub-module capacitance in the M3C. A frequency-voltage model is established through the linear coupling relationship between frequency and sub-module capacitor voltage. When the system frequency fluctuates, the sub-module capacitors in the M3C can absorb or release the energy to simulate the inertia to provide frequency support for the system. Finally, the offshore wind power delivery model based on M3C with simulation inertia is built in MATLAB/Simulink, and its results are analyzed and evaluated under load variation. © 2023 IEEE.

关键词： frequency support frequency-voltage model modular multilevel matrix converter simulation inertia sub-module capacitance

来源：评论

学校读者我要写书评

暂无评论

Dual-passivity-based control strategy of modular multilevel matrix converter

引用

INTERNATIONAL TRANSACTIONS ON ELECTRICAL ENERGY SYSTEMS 2021年第1期31卷 p1-18页

作者： Ma, Xinqiao Cheng, Qiming Cheng, Yinman Rui, Xinhua Zhao, Juefei Shanghai Univ Elect Power Coll Automat Engn Shanghai Peoples R China State Grid Shanghai Municipal Elect Power Co North Power Supply Branch Shanghai Peoples R China Nanjing Inst Technol Sch Elect Power Engn Nanjing Peoples R China State Grid Jiangsu Elect Power Co Ltd Nanjing Power Supply Co Nanjing Peoples R China

Complying with the trend of renewable energy power generation, the modular multilevel matrix converter (MMMC, also known as M3C) is applied to the low-frequency alternating current (AC) transmission system to realize the AC/AC conversion from low-frequency AC to power-frequency AC based on the offshore wind power generation. In view of the shortcomings of traditional proportional integral (PI) control, such as slow response, more adjustment parameters and low dynamic performance, a new type of nonlinear control based on passive theory is proposed in this paper, namely passivity-based control. It has the advantages of fast response, less adjustment parameters, and high dynamic performance, which can greatly improve the control effects of the M3C input and output sides current. Under operating conditions such as input-side frequency changes and output power changes, the passivity-based control strategy can still maintain a very low system impact, and the overall control effect is better. Finally, the correctness and superiority of this method are verified by simulation under different working conditions.

关键词： dual‐ passivity‐ based control frequency changes modular multilevel matrix converter PI control power changes wind power

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：