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Nine Level Cascaded H Bridge Inverter (For High Performing UPS Applications)

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dc.contributor.author Darmawardana, PDH
dc.contributor.author Kahingala, TD
dc.contributor.author Karunarathna, KMCG
dc.contributor.author Kularatne, LBSN
dc.contributor.author Karunadasa, JP
dc.date.accessioned 2015-08-03T10:07:16Z
dc.date.available 2015-08-03T10:07:16Z
dc.date.issued 2015-08-03
dc.identifier.uri http://dl.lib.mrt.ac.lk/handle/123/11085
dc.description.abstract This paper proposes a nine level Cascaded H-Bridge Multi-Level Inverter, realized via Distortion Minimization PWM technology which is incorporated in an Uninterrupted Power Supply (UPS), operating in the low power end. The proposed UPS is capable of supplying four typical personal computers simultaneously. Due to the increased number of switching power poles used, switching frequency per device is reduced, minimizing the switching stress per device. Thus a prolonged lifetime of the inverter can be anticipated. Moreover, the suitability of Distortion minimization PWM for this inverter design is discussed compared to Selective Harmonic Elimination PWM (SHEPWM): one of the most popular PWM methods for multi-level inverters. Furthermore, in order to incorporate the designed inverter in a UPS application such that cost, weight and size are minimized while ensuring a good transient response at the failure of the mains supply, a novel approach named “Offline Synchronization”: an attempt to combine the advantages of both offline UPSs and Online UPSs is introduced. en_US
dc.description.sponsorship IEEE IEEE Sri Lanka Section Robotics and Automation Section Chapter, IEEE Sri Lanka Section en_US
dc.language.iso en en_US
dc.subject Cascaded H-Bridge Multi-Level Inverter technology, Uninterrupted Power Supply (UPS), Offline Synchronization, Total Harmonic Distortion (THD), Distortion minimization PWM, Selective Harmonic Elimination PWM (SHEPWM) en_US
dc.title Nine Level Cascaded H Bridge Inverter (For High Performing UPS Applications) en_US
dc.type Conference-Full-text en_US
dc.identifier.faculty Engineering en_US
dc.identifier.department Department of Electrical Engineering University of Moratuwa, Sri Lanka en_US
dc.identifier.year 2015 en_US
dc.identifier.conference MERCon 2015 Moratuwa Engineering Research Conference en_US
dc.identifier.place University of Moratuwa, Sri Lanka en_US
dc.identifier.pgnos p 41 en_US
dc.identifier.email hansikadharmawardhana@gmail.com en_US
dc.identifier.email thisandu.kahi@gmailcom en_US
dc.identifier.email chamilagayan21@gmail.com en_US
dc.identifier.email lbsnaleendrakula@gmail.com en_US
dc.identifier.email karu@elect.mrt.ac.lk en_US


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