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A Highly Efficient and Compact Bidirectional DC-AC Converter for Home Electricity Management Systems

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Abstract

The management of electricity demand still raises a huge interest for end-users at the household level. Smart home electricity management systems (HEMS) have recently emerged both to warrant uninterruptible power and high power quality, and decrease the cost of electricity consumption by either shifting it in off peak time or smoothing it. Such systems require a bidirectional DC-AC converter, specifically when the energy flows from a DC source (e.g., batteries) to an AC one (i.e., the AC grid), and vice versa. This article highlights the relevance of a bidirectional DC-AC converter based on sinusoidal waveforms from the generation of sine half-waves. Such a converter is composed of a DC-DC stage equivalent to an adjustable output voltage source and a DC-AC stage (H-bridge) which are in series. The results of a complete experimental procedure prove the feasibility to warrant a high efficiency (higher than 95%) of the whole converter, and a high power quality of the output signals in terms of total harmonic distortion, while avoiding the use of a bulky filter, as is the case with a conventional H-bridge. Keywords Smart home electricity management systems; bidirectional DC-AC converter; high efficiency; high power quality.
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Dates and versions

hal-02069647 , version 1 (15-03-2019)

Identifiers

  • HAL Id : hal-02069647 , version 1

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Sebastien Jacques, Sébastien Bissey, Cedric Reymond, Jean-Charles Le Bunetel. A Highly Efficient and Compact Bidirectional DC-AC Converter for Home Electricity Management Systems. Innovative Applied Energy (IAPE'19), Mar 2019, Oxford, United Kingdom. ⟨hal-02069647⟩
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