Digital predictive current control of a three-phase four-leg inverter

Marco Rivera, Venkata Yaramasu, Ana Llor, Jose Rodriguez, Bin Wu, Maurice Fadel

Research output: Contribution to journalArticlepeer-review

157 Scopus citations


While the classical control techniques for three-phase two-level four-leg inverters are based on pulsewidth modulation or 3-D space vector modulation, this paper presents a simple digital current control strategy without the modulation stage. The proposed controller uses the discrete nature of the four-leg inverter and filter to generate the switching states. Using a predictive cost function, the optimal switching state to be applied in the next sampling interval is selected. The proposed controller offers excellent reference tracking with less current harmonic distortion for balanced and unbalanced loading conditions. The feasibility of the proposed strategy is verified by digital implementation on a dSPACE DS1104-based rapid prototype platform.

Original languageEnglish (US)
Article number6307849
Pages (from-to)4903-4912
Number of pages10
JournalIEEE Transactions on Industrial Electronics
Issue number11
StatePublished - 2013
Externally publishedYes


  • Control systems
  • Current control
  • Dc-ac power conversion
  • Digital control
  • Discrete-time signals
  • Finite-set model predictive control
  • Four-leg inverters

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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