Unintended consequences of limiting high-frequency emission by small end-user equipment

Lundmark, Christina; Larsson, Ellinor; Bollen, M.H.J.

doi:10.1109/pes.2006.1709476

Cited by 10 publications

(8 citation statements)

References 15 publications

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“…Other measurement also finds that some of photovoltaic inverter generated distorted current in frequency range of 2-150 kHz [2]. Since the lacks of regulation for many devices and the adverse effects of the distortion in this frequency range are not significant yet even the risk of interference are possible [3], the efforts in managing the distortion for that frequency range are less. Some of home appliances equipped with inverter technology are predicted on generating current distortion in frequency range of 2-150 kHz.…”

Section: Introductionmentioning

confidence: 99%

Current Distortion Characteristics of Some Home Appliances in Distorted Voltage Environment for Frequency Range of 2-150 KHz

Sudiarto¹,

Widyanto²,

Hirsch³

2024

RE&PQJ

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Abstract. Many of home appliances equipped by inverter technology because of its benefit of smaller, better of performance, more efficient and save energy. However this technology also generates current distortion regarding to its frequency switching which eventually has an influence on decreasing of power quality. Since the frequency switching of inverter normally in the range of 2 -150 kHz, that cause the distortions in similar frequency range. Voltage and current distortions in the frequency range of 2-150 kHz is currently subject in research and standardization work. The reasons are that the appliances potentially generating such distortions are increasingly used and that the regulation and standardization are not completely covering and defining the limits and methods for that distortion.This study investigates the characteristics of current distortion generated by some home appliances in the frequency range of 2-150 kHz. The study is important to analyze the current distortion generated by the load particularly when the voltage supply is distorted due to the decreasing of power quality. The appliances under test are Compact Fluorescent Lamp, LED lamp and Battery Charger. The voltage distortions input were set at 1 Volt for the frequency range of 5 to 70 kHz. The results show current distortion characteristics and impedance properties of all devices under test for each specific frequency distortion. There are unique characteristics of distortion depending on frequency.

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Section: Introductionmentioning

confidence: 99%

Current Distortion Characteristics of Some Home Appliances in Distorted Voltage Environment for Frequency Range of 2-150 KHz

Sudiarto¹,

Widyanto²,

Hirsch³

2024

RE&PQJ

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“…The presence of multiple control system could result in interaction between them, resulting in undamped oscillations. The term "electronic instability" has been used to refer to such a situation [6], [7]. The oscillations will not in all cases result in an unstable situation leading to an interruption of the power supply.…”

Section: Introductionmentioning

confidence: 99%

Converter induced resonances in microgrids due to high harmonic distortion

Etherden¹,

Lundmark²,

Fernandez³

et al. 2024

RE&PQJ

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This paper describes the resonance introduced by harmonics amplification and adverse interaction of electronic converters. An observation of undamped oscillation leading to instability in a microgrid is described. The term "converter induced resonances" is proposed to describe this phenomenon. The amount of distributed generation, active loads, FACTS and battery energy storage systems are expected to increase in future Smart Grids. All these resources will be interfaced with electronic converters. The potential impact of converter induced resonances in such grids is described. A coordinated design of the control systems of all converters is in practice not feasible. Each device will be independently tested to fulfil grid codes and have its own converter control implemented that can include functionality to modify voltage and /or current waveform.

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“…Unintended Supraharmonic distortion is primarily emitted by the switching action of modern power electronic devices. Typical Supraharmonic sources include rectifiers, switched-mode power supplies, modern lightning equipment, industrial machines, and household equipment [16]. Consequently, EVs are considered a Supraharmonics source as well.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Supraharmonic Emission from Three Different Electric Vehicle Charging Infrastructures in Time and Frequency Domain

Streubel¹,

Kattmann²,

Eisenmann³

et al. 2022

Energies

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With the recent proliferation of electric vehicles (EVs), maintaining power quality within acceptable limits in future distribution grids will become a challenging task. A specific concern is the spread of Supraharmonics in the range from 2 to 150 kHz, generated by modern power electronic devices. In this paper, the long term Supraharmonic distortion from three differently sized electric vehicle charging infrastructures is analyzed in frequency and time domain. At the monitored sites several interruptions of EV charging processes were observed due to poor power quality. It was found that vehicles disconnect when exposed to high levels of harmonic distortion. Moreover, the impact of the charging EVs on the Supraharmonic distortion and the interaction with the background distortion for the individual sites is discussed. Results show that a general increase in Supraharmonics emission can be expected due to the rising number of EVs. However, measurements also indicate that damping effects can occur for certain load configurations.

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Unintended consequences of limiting high-frequency emission by small end-user equipment

Cited by 10 publications

References 15 publications

Current Distortion Characteristics of Some Home Appliances in Distorted Voltage Environment for Frequency Range of 2-150 KHz

Current Distortion Characteristics of Some Home Appliances in Distorted Voltage Environment for Frequency Range of 2-150 KHz

Converter induced resonances in microgrids due to high harmonic distortion

Characterization of Supraharmonic Emission from Three Different Electric Vehicle Charging Infrastructures in Time and Frequency Domain

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