International Journal For Multidisciplinary Research

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Offline UPS for Regenerative Loads

Author(s) Asmabegam.M, Gunavathi.S, Sowmya.S, Vidhyalakshmi.E, Janagiraman.A
Country India
Abstract This paper presents describes about a unique DC Discharge System for Offline UPS. Whenever an offline mode UPS is connected to a motor load, as the motor decelerates either through the change of torque or due to the Dynamic braking there will be a regenerative energy produced. If this regenerative energy flows back into the UPS, then over-voltage condition takes place and causes damage to the UPS. This regenerative energy can bypass through the battery in online mode. But online mode operation of UPS needs high cost as large heat sinks are required. So, offline mode of operation is preferred in most of the cases. The proposed system dissipates the regenerative energy through the connected resistors and the remaining energy is used for the gating of semiconductor switches inside the UPS. The detailed principle of the proposed method is discussed in this project. The entire Discharge System and Gate pulse generating System are simulated in Proteus Software and the results are provided.
Keywords Offline UPS, DC Discharge System, IGBT triggering
Field Engineering
Published In Volume 5, Issue 2, March-April 2023
Published On 2023-04-15
Cite This Offline UPS for Regenerative Loads - Asmabegam.M, Gunavathi.S, Sowmya.S, Vidhyalakshmi.E, Janagiraman.A - IJFMR Volume 5, Issue 2, March-April 2023. DOI 10.36948/ijfmr.2023.v05i02.2377
DOI https://doi.org/10.36948/ijfmr.2023.v05i02.2377
Short DOI https://doi.org/gr5qv2
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