Voltage Source Multi Switched Capacitor Boost and Buck-Boost High Gain DC-DC Converters

Asim Amir, Nasrudin Abd Rahim, Hang Seng Che, Ahmad Elkhateb

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abstract

—This paper presents dc-dc converters based on multi switched capacitor cells for high boost. The essence in a grid connected micro-inverter is dc-dc converter; it is employed to boost the low PV voltage, which varies from 35-45 VDC in order to increase the bus voltage to be 380-400 VDC. Inverter utilizes this high bus voltage to match the grid voltage, which is 240 VAC at 60Hz frequency. For conventional boost converter, this requires high boost ratio that is beyond its practical capability.Furthermore, the high duty ratio needed will result in high components stress that suppresses the overall efficiency of the converter. To overcome aforementioned problems, this paper suggests the integration of multiple switched-capacitor cells (SCs)with conventional boost and buck-boost converters to achieve high dc-link voltage. Results based on 100 W laboratory prototype are given to verify the theoretical analysis.
Original languageEnglish
Title of host publicationAustralasian Universities Power Engineering Conference 2017 (AUPEC 2017): Proceedings
Publisher IEEE
Number of pages5
ISBN (Electronic)9781538626467
Publication statusPublished - 30 Sep 2017
EventAustralasian Universities Power Engineering Conference 2017: AUPEC2017 - Melbourne & Olympic Parks, Melbourne, Australia
Duration: 19 Nov 201722 Nov 2017

Conference

ConferenceAustralasian Universities Power Engineering Conference 2017
CountryAustralia
CityMelbourne
Period19/11/201722/11/2017

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    Amir, A., Rahim, N. A., Che, H. S., & Elkhateb, A. (2017). Voltage Source Multi Switched Capacitor Boost and Buck-Boost High Gain DC-DC Converters. In Australasian Universities Power Engineering Conference 2017 (AUPEC 2017): Proceedings IEEE .