H8 inverter for common-mode voltage reduction in electric drives

Luca Concari, Davide Barater, Giampaolo Buticchi, Carlo Concari, Marco Liserre

Research output: Journal PublicationArticlepeer-review

61 Citations (Scopus)


This paper presents a modified two-level three-phase inverter for the reduction of the leakage current. With respect to a traditional two-level inverter, the proposed solution reduces the common-mode voltage (CMV), both in amplitude and frequency. Between the dc source and the traditional three-phase bridge, two active dc-decoupling devices and a voltage-clamping network have been added. A dedicated control strategy was developed adopting a modified space vector pulse-width modulation, oriented to the reduction of the CMV. Simulations showing the good performance of the solution are presented. A preliminary prototype was developed and experimental results are presented.

Original languageEnglish
Article number7493639
Pages (from-to)4010-4019
Number of pages10
JournalIEEE Transactions on Industry Applications
Issue number5
Publication statusPublished - 1 Sept 2016
Externally publishedYes


  • Common-mode voltage (CMV)
  • H8
  • drives
  • inverters
  • leakage currents
  • pulse-width modulation (PWM)
  • space vector (SV)
  • three-phase

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


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