A wide bandwidth, on-line impedance measurement method for power systems, based On PLC techniques

2014 ◽  
Author(s):  
Shucheng Zhu ◽  
Cornelis Jan Kikkert ◽  
Nesimi Ertugrul
Keyword(s):  
Power Systems ◽  
Measurement Method ◽  
Impedance Measurement ◽  
Wide Bandwidth ◽  
On Line

scholarly journals On-Line EIS Measurement for High-Power Fuel Cell Systems Using Simulink Real-Time

Energies ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 6133
Author(s):  
Soo-Bin Han ◽  
Hwanyeong Oh ◽  
Won-Yong Lee ◽  
Jinyeon Won ◽  
Suyong Chae ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Power Systems ◽  
Real Time ◽  
High Power ◽  
Impedance Measurement ◽  
Virtual Space ◽  
Cell Systems ◽  
Physical Systems ◽  
Research Areas ◽  
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Impedance measurements by EIS are used to build a physical circuit-based model that enables various fault diagnostics and lifetime predictions. These research areas are becoming increasingly crucial for the safety and preventive maintenance of fuel cell power systems. It is challenging to apply the impedance measurement up to commercial applications at the field level. Although EIS technology has been widely used to measure and analyze the characteristics of fuel cells, EIS is applicable mainly at the single-cell level. In the case of stacks constituting a power generation system in the field, it is difficult to apply EIS due to various limitations in the high-power condition with uncontrollable loads. In this paper, we present a technology that can measure EIS on-line by injecting the perturbation current to fuel cell systems operating in the field. The proposed EIS method is developed based on Simulink Real-Time so that it can be applied to embedded devices. Modeling and simulation of the proposed method are presented, and the procedures from the simulation in virtual space to the real-time application to physical systems are described in detail. Finally, actual usefulness is shown through experiments using two physical systems, an impedance hardware simulator and a fuel cell stack with practical considerations.

An Impedance Measurement Method of Solar Panels by Power Converter using PRBS

2020 ◽  
Vol 140 (3) ◽  
pp. 140-147
Author(s):  
Koji Takechi ◽  
Takeshi Yokoi ◽  
Hiroaki Kakigano
Keyword(s):  
Measurement Method ◽  
Impedance Measurement ◽  
Power Converter ◽  
Solar Panels

Development of a PID based on-line tar measurement method – Proof of concept

Fuel ◽  
2013 ◽  
Vol 113 ◽  
pp. 113-121 ◽  
Author(s):  
Mozhgan Ahmadi ◽  
Harrie Knoef ◽  
Bert Van de Beld ◽  
Truls Liliedahl ◽  
Klas Engvall
Keyword(s):  
Measurement Method ◽  
Proof Of Concept ◽  
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On-Line Three-Dimensional Measurement Method Based on Low Modulation Feature

2013 ◽  
Vol 40 (7) ◽  
pp. 0708006 ◽  
Author(s):  
彭旷 Peng Kuang ◽  
曹益平 Cao Yiping ◽  
武迎春 Wu Yingchun ◽  
郑素珍 Zheng Suzhen
Keyword(s):  
Measurement Method ◽  
Three Dimensional ◽  
Dimensional Measurement ◽  
Three Dimensional Measurement ◽  
On Line

Underwater Binocular Measurement Method Based on Line-Structured Light

2020 ◽  
Vol 47 (5) ◽  
pp. 0504004
Author(s):  
解则晓 Xie Zexiao ◽  
李俊朋 Li Junpeng ◽  
迟书凯 Chi Shukai
Keyword(s):  
Measurement Method ◽  
Structured Light ◽  
On Line ◽  
Binocular Measurement

Research on the on-line dimensional accuracy measurement method of conical spun workpieces based on machine vision technology

Measurement ◽  
2019 ◽  
Vol 148 ◽  
pp. 106881 ◽  
Author(s):  
Gangfeng Xiao ◽  
Yongting Li ◽  
Qinxiang Xia ◽  
Xiuquan Cheng ◽  
Weiping Chen
Keyword(s):  
Machine Vision ◽  
Measurement Method ◽  
Dimensional Accuracy ◽  
Accuracy Measurement ◽  
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