Multipoint Measurement Technique for Tracking Electromagnetic Interference Propagation and Correlation in a Complex Installation

2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE

et al. 2020

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A multipoint measurement technique for detecting rapid voltage changes causing electromagnetic interference, and its propagation effect in a power distribution network, is presented. The main advantage of the proposed techniques lies in its capability to detect rapid voltage change disturbance and its correlation with other electromagnetic interference events simultaneously. This is achieved by combining a multipoint measurement technique and a coincidence ratio evaluation method. A multipoint measurement technique was applied by using four distributed power quality analyzers which record conducted electromagnetic interference events. The recorded data is evaluated using the coincidence ratio and the time gap analysis method. The results show that a rapid voltage change in a 440 V power distribution subsystem has a probability in between 70 % and 93.8 % of triggering a sag in an uninterrupted power supply, and thus electromagnetic interference towards other subsystems.

“…Then the total number of the coincident events will be rationalized with the total sum (union) of the specific data events. The coincidence ratio (β) is proposed in [7]:…”

Section: Multipoint Measurement Setup and Data Analysis Methodsmentioning

confidence: 99%

Evaluating Rapid Voltage Changes and its Propagation Effect using Multipoint Measurement Technique

2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE

et al. 2020

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“…The behavior of the currents and voltages of the EUT was monitored by applying a multi-point measurement technique. This technique was chosen because based on previous studies it is suitable to monitor the voltage, and current dynamic behavior at different measurement points at the same time [13], [14]. For this purpose, four voltage probes (TA043) and four current probes (TA189) from Pico Technology were installed at four different measurement points as follows:…”

Section: Equipment Under Test and Measurement Setupmentioning

confidence: 99%

Behavior of COTS-Based Equipment Under Ship Mains Supply Frequency Tolerance Requirements

2021 IEEE International Joint EMC/SI/PI and EMC Europe Symposium

et al. 2021

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The use of commercial off the shelf (COTS) devices have become a preferred strategy in ship system developments. In this work, we investigated the behavior of an uninterruptible power supply (UPS) using COTS-based equipment on a ship's power distribution system. It focuses on the implementation of IEC 60092-101 and STANAG 1008 Ed. 9 frequency tolerance requirements. One of the important benefits of this work is that it can be used as a consideration for the electromagnetic risk of integrating COTS-based equipment in an islanded power system like ships. The voltage and current behavior of the equipment under test were measured and recorded at four different points simultaneously using a multipoint measurement technique. From the analysis, it was found that when the frequency of the mains supply is deviated by 5 % the current at the UPS input is modulated and the maximum current is increased.

“…In island systems, the power is not provided by the mains but is provided by, for example, diesel generators, which are weaker configurations than shore power systems. This could introduce power quality (PQ) problems [1], which could lead to an operation failure. One of the common solutions provided by ship system integrators to prevent the malfunction of critical loads is by installing an online uninterruptible power supply (UPS).…”

Section: Introductionmentioning

confidence: 99%

The Effect of Ship Mains Supply Frequency Transient on UPS-based Equipment

2023 IEEE 7th Global Electromagnetic Compatibility Conference (GEMCCON)

et al. 2023

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Frequency deviation is a common power quality disturbance in islanded power systems such as ships. This study has investigated the effect of main supply frequency transient on an uninterruptible power supply (UPS)-based equipment. The current behavior was measured by a multipoint measurement technique. During the frequency transient, amplitude modulation occurs due to the difference in operating frequency between the UPS input and output. The side effects are the appearance of electromagnetic interference and an increase in maximum current.