相关实验视频

Updated: Jul 16, 2025

Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator

Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator

Published on: February 14, 2025

基于可重新配置的楼梯模块的多级逆变器的计算机和实验分析,具有容错能力

Reza Choupan Ebrahimabad¹, Daryoush Nazarpour¹, Sajjad Golshannavaz¹

¹Electrical and Computer Engineering Department, Urmia University, 11km SERO Road, Urmia, Iran.

ISA transactions

|September 11, 2023

概括

这项研究引入了一种新的可重新配置的多级逆变器 (MLI),具有增强的故障耐受性. 拟议的设计即使在电源开关中出现开放电路故障,也可以运行,而不需要额外的组件.

科学领域:

电气工程电气工程
电力电子电力电子电力电子
逆变器技术逆变器技术

背景情况:

传统的多层逆变器 (MLI) 容易因电源开关故障而产生输出波形异常.
在MLI中增加交换机数量增加了这种故障的可能性,这构成了重大挑战.
高故障耐受能力是先进的MLI结构的关键要求.

研究的目的:

为可重新配置的MLIs提供一个新的基本单元和楼梯模块 (SM).
开发一个优化的MLI,增强对开路开关故障的故障耐受性.
为了实现故障操作,没有冗余的脚或开关.

主要方法:

设计和探索一个新的基本单元和楼梯模块 (SM).
将模块扩展和优化为可重新配置的多级逆变器 (MLI).
实施基本的频率切换策略和在故障条件下重新配置载波信号.
通过 MATLAB/Simulink 模拟和实验室原型实现的验证.

主要成果:

拟议的MLI在电源开关的开路故障期间证明了连续运行.
在不需要冗余的脚或额外的开关的情况下,可以实现容错.
对比分析显示,在电源开关,驱动器,直流源和可靠性方面,相对于类似结构,具有优势.

结论:

拟议的可重新配置的MLI为耐故障功率电子产品提供了强大而高效的解决方案.
该设计有效地减轻开关故障的影响,提高系统可靠性.
该研究通过全面的模拟和实验结果验证了MLI的容错能力.

关键词:

和导电损失,以及导电损失.阻止电压的阻断电压.耐故障结构的结构可重新配置的多级逆变器 (MLI)楼梯模块 (SM) 是一个楼梯模块.切换切换切换切换

更多相关视频

Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator

Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator

Published on: October 28, 2022

The Modular Design and Production of an Intelligent Robot Based on a Closed-Loop Control Strategy

The Modular Design and Production of an Intelligent Robot Based on a Closed-Loop Control Strategy

Published on: October 14, 2017

相关概念视频

Multimachine Stability

Multimachine Stability

Multimachine stability analysis is crucial for understanding the dynamics and stability of power systems with multiple synchronous machines. The objective is to solve the swing equations for a network of M machines connected to an N-bus power system.
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:

Bus Impedance Matrix

Bus Impedance Matrix

Calculating subtransient fault currents for three-phase faults in an N-bus power system involves using the positive-sequence network. When a three-phase short circuit occurs at a specific bus, the analysis uses the superposition method to evaluate two separate circuits.
In the first circuit, all machine voltage sources are short-circuited, leaving only the prefault voltage source at the fault location. The positive-sequence bus impedance matrix can be determined by solving the nodal equations,...

Power System Three-Phase Short Circuits

Power System Three-Phase Short Circuits

Determining the subtransient fault current in a power system involves representing transformers by their leakage reactances, transmission lines by their equivalent series reactances, and synchronous machines as constant voltage sources behind their subtransient reactances. In this analysis, certain elements are excluded, such as winding resistances, series resistances, shunt admittances, delta-Y phase shifts, armature resistance, saturation, saliency, non-rotating impedance loads, and small...

Fault Types

Fault Types

When analyzing a single line-to-ground fault from phase A to ground at a three-phase bus, it is important to consider the fault impedance. This impedance is zero for a bolted fault, equal to the arc impedance for an arcing fault, and represents the total fault impedance for a transmission-line insulator flashover. To derive sequence and phase currents, fault conditions are translated from the phase domain to the sequence domain.
For line-to-line faults occurring between phases B and C, the...

Voltage Doubler Circuit

Voltage Doubler Circuit

A voltage doubler circuit integrates two main components: a clamping section and a rectifier section. The clamping section consists of a capacitor (C1) and a diode (D1), whereas the rectifier section is equipped with another diode (D2) and capacitor (C2). This circuit produces an output voltage with twice the amplitude of the sinusoidal input voltage.

Reclosers and Fuses

Reclosers and Fuses

Automatic circuit reclosers enhance the protection of distribution circuits by interrupting and auto-reclosing an AC circuit according to a preset sequence. They effectively manage temporary faults on overhead distribution lines, often caused by tree limbs or wildlife, by briefly disrupting service to improve overall reliability. However, contact with reclosers or energized broken conductors on the ground can pose serious hazards.
A comprehensive protection scheme for radial distribution...