Analiza wyższych harmonicznych generowanych przez lampy LED

Putz, Ł.

doi:10.15199/48.2020.04.18

Cited by 2 publications

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“…The analysis showed a high value of the THD coefficient for the supply current. In the case of supplying PMSMs by inverter-equipped systems one usually observes a high content of odd harmonics, that is 5, 7, 11 and 13 [22][23][24][25].…”

Section: Measurements Of the Propulsion System Properties In Load Con...mentioning

confidence: 99%

Archives of Electrical Engineering

Knypiński,

Krupiński

2020

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The paper presents a method of determining the efficiency of the slewing drive system applied in tower cranes. An algorithm for the proper selection of a permanent magnet synchronous motor (PMSM) for crane applications is presented. In the first stage of our research the proper PMSM was proposed on the basis of the simulation calculation. Next, the PM motor was examined on a special test bench. The experimental setup allows determining major electrical and mechanical parameters of the motor drive system. The applied slewing system consists of: an inverter, gear, cable drum and a permanent magnet motor. The performance and efficiency of the system were experimentally determined. Selected results of the experimental measurement are presented and discussed.

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Section: Measurements Of the Propulsion System Properties In Load Con...mentioning

confidence: 99%

Archives of Electrical Engineering

Knypiński,

Krupiński

2020

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“…Although LED lamps are characterized by high efficiency and long life, they also have their disadvantages—they cause an increase in reactive capacitive energy consumption and draw distorted current, which causes disturbances in the form of higher harmonics of current and thus deterioration in the quality of electricity [ 6 , 7 ]. The concept of power quality is a set of electrical quantities, such as voltage, frequency, harmonics, etc., which determine whether the electricity supplied to consumers maintains the appropriate parameters that allow the correct operation of all electrical equipment.…”

Section: Introductionmentioning

confidence: 99%

Effect of LED Lighting on Selected Quality Parameters of Electricity

Wantuch

Olesiak

2023

Sensors

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Recently, various technological light sources have appeared on the market. As a result, it is extremely important to evaluate the characteristics of the available lamps and the impact they may have on the power grid. This article presents regulations and standards for power quality, including higher current and voltage harmonics, and analyzes three selected light-emitting diode lamps. The purpose of the study was to analyze the impact of LED lighting systems on the power quality (PQ) of the electric grid. The results of measurements of parameters determining the power quality of the electricity consumed by modern LED light sources used for room lighting are presented. Commercially available lamps and low-power power supplies (25 to 35 W) with an output current of 350 mA were used for the study. The current waveforms of selected lamps during their connection to the power grid, the results of harmonic emission tests, as well as the effect of increasing the load of selected DC power supplies (drivers) on THD, power factor (PF), and their efficiency are presented. The significant negative impact of power supply circuits in compact LED lamps on the power quality parameters of lighting circuits was demonstrated. The tested lamps significantly exceed the permissible limits of harmonics and THD. Test results have shown that LED lamps show significant savings in electricity consumption, but they behave as nonlinear loads. They generate high-frequency current harmonics, which can lead to degradation of power quality in the distribution network. Therefore, if the primary concern for the user is power quality rather than power savings, traditional incandescent lamps would be a much better choice. When using switched-mode power supplies, attention should be paid to their load rating. You should avoid using power supplies in the lower ranges of permissible load capacity. A more heavily loaded power supply has better performance due to power quality and efficiency.

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Analiza wyższych harmonicznych generowanych przez lampy LED

Cited by 2 publications

References 0 publications

Archives of Electrical Engineering

Archives of Electrical Engineering

Effect of LED Lighting on Selected Quality Parameters of Electricity

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