Cost-Effective hundred-year life for single-phase inverters and rectifiers in solar and LED lighting applications based on minimum capacitance requirements and a ripple power port

Philip T. Krein, Robert S. Balog

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

157 Citations (Scopus)

Abstract

Energy storage requirements for converters with a dc port and a single-phase grid-connected port are evaluated, based on the unavoidable double-frequency power requirement. The minimum energy storage requirement is linked to a minimum capacitance requirement for converters that use capacitance energy storage. It is shown how to employ a ripple power port to manage energy storage and decouple capacitor ripple from power ripple. A ripple power port allows a designer to make a choice of capacitor voltage independent of system voltages. This in turn allows film capacitors of modest size to be used for energy storage in these applications. A combination of ac link converter and ripple power port leads to a dramatic increase in reliability: it is shown that converters with nominal ratings up to 200 W can be designed with expected mean-time-between-failure ratings on the order of 1.4 million hours-sufficient for hundred-year operation in long-life applications such as photovoltaic converters and LED lamps. This large increase in life is achieved with minimal extra cost.

Original languageEnglish
Title of host publication24th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2009
Pages620-625
Number of pages6
DOIs
Publication statusPublished - 2 Jun 2009
Event24th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2009 - Washington, DC, United States
Duration: 15 Feb 200919 Feb 2009

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

Other

Other24th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2009
CountryUnited States
CityWashington, DC
Period15/2/0919/2/09

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Krein, P. T., & Balog, R. S. (2009). Cost-Effective hundred-year life for single-phase inverters and rectifiers in solar and LED lighting applications based on minimum capacitance requirements and a ripple power port. In 24th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2009 (pp. 620-625). [4802723] (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC). https://doi.org/10.1109/APEC.2009.4802723