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    Effects of DC-link filter on harmonic and interharmonic generation in three-phase adjustable speed drive systems

    Access Status
    Fulltext not available
    Authors
    Soltani, H.
    Davari, P.
    Kumar, D.
    Zare, Firuz
    Blaabjerg, F.
    Date
    2017
    Type
    Conference Paper
    
    Metadata
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    Citation
    Soltani, H. and Davari, P. and Kumar, D. and Zare, F. and Blaabjerg, F. 2017. Effects of DC-link filter on harmonic and interharmonic generation in three-phase adjustable speed drive systems, pp. 675-681.
    Source Title
    2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017
    DOI
    10.1109/ECCE.2017.8095849
    ISBN
    9781509029983
    School
    School of Electrical Engineering, Computing and Mathematical Science (EECMS)
    URI
    http://hdl.handle.net/20.500.11937/66309
    Collection
    • Curtin Research Publications
    Abstract

    © 2017 IEEE. Harmonic and interharmonic distortions are considered as the main power quality issues especially in the distribution networks. The double-stage Adjustable Speed Drives (ASDs) in which the front-end diode rectifier is connected to a rear-end inverter through an intermediate DC-link filter May inject significant amount of harmonics and interharmonics into the grid and consequently degrade the grid power quality. In this paper, the effect of the DC-link filter – as a key player – on the ASD input current harmonic and interharmonic distortions is investigated. In this respect, the ASD performance is evaluated harmonically based on three different DC-link configurations; the conventional filter (with AC- and/or DC-side chokes, and DC-link capacitor), the Small DC-Link Capacitor (SDLC), and the controlled DC link by using an Electronic Inductor (EI) technique. It shows how employing the small DC-link capacitor will push the harmonics into the higher frequency ranges and it will also give rise to more interharmonic distortions. Moreover, the EI configuration is introduced as an optimal DC-link intermediate circuit within the investigated frequency range of 0–2 kHz. The presented analysis and discussions have been validated by the simulation and experimental results.

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