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Somnath M. Lambe, Kailash J. Karande
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- Assistant Professor, Assistant Professor Department of Electronics & Telecommunication Engineering, Karmayogi Institute of Technology, Solapur, Department of Electronics & Telecommunication Engineering, Karmayogi Institute of Technology, Solapur Maharashtra, Maharashtra India, India
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Abstract
nNonlinear drives have many advantages in terms of the automation process. A VFD drive is used to increase or decrease the speed of the motor. Although all of these have advantages, they also have major disadvantages when used in higher ratings. The power becomes unstable as harmonics are generated and enter the power system. Therefore, instead of a sine-wave voltage, a random waveform generates. In this research article, the effect of line voltage increases due to harmonics on the quality of the power supply and the capacitor bank used for power improvement is studied. This study suggests that a parallel resonance coil should be used. The resulting harmonic current passes through the capacitor and creates an additional voltage that can spoil the capacitor bank. The solution is to avoid passing the harmonics through capacitors that produce a high voltage. To achieve this, a coil with a high-quality factor Q should be used. When the Q factor is high, the active power loss in the coil is much lower. All experimental results show that the harmonics will be present in the line voltage, but the harmonics will not pass through the capacitor. This is because there is use of parallel resonance at that location. This is a problem in the electricity distribution network. The high-cost capacitor bank is damaged owing to this harmonic generation impact. In fact, it was suggested by the MSEDCL team to find a way to never generate harmonics. The velocity of the motor is directly linked to the frequency of the input voltage and inversely related to the number of magnetic poles in the motor. Considering all the above, the increasing prevalence of non-linear drives in higher ratings in industrial applications has raised concerns about the potential overvoltage stress on power factor correction (PFC) capacitors. Overvoltage events lead to capacitor failures and compromise the efficiency of power factor correction systems. This research investigates the use of parallel resonance filters as a protective measure to mitigate overvoltage issues on PFC capacitors in the presence of non-linear drives. The aim is to enhance the reliability and longevity of PFC capacitors in power systems with non-linear loads. Experimental-based approaches are employed to analyze the performance of parallel resonance filters in suppressing overvoltage generated by non-linear drives. The study considers various operating conditions and identifies optimal parameters for the resonance filter. The findings reveal that the implementation of parallel resonance filters effectively reduces overvoltage stress on PFC capacitors, ensuring their protection in the presence of non-linear drives. The results also highlight the importance of proper tuning and design considerations for the resonance filter. The use of parallel resonance filters emerges as a viable solution for safeguarding PFC capacitors from overvoltage induced by non-linear drives. This research provides insights into the practical implementation of resonance filters to enhance the robustness of power factor correction systems in non-linear load environments.
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Keywords: Overvoltage protection, power factor correction capacitor, resonance filter, parallel resonance, high quality factor.
n[if 424 equals=”Regular Issue”][This article belongs to Journal of Power Electronics and Power Systems(jopeps)]
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References
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| Volume | 14 | |
| [if 424 equals=”Regular Issue”]Issue[/if 424][if 424 equals=”Special Issue”]Special Issue[/if 424] [if 424 equals=”Conference”][/if 424] | 01 | |
| Received | May 2, 2024 | |
| Accepted | May 13, 2024 | |
| Published | May 25, 2024 |
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