Simple and robust predictive direct control of DFIG with low constant switching frequency and reduced torque and flux ripples

Jiefeng Hu, Jianguo Zhu, Yongchang Zhang, Qishuang Ma, Youguang Guo

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

7 Citations (Scopus)

Abstract

For conventional direct torque control (CDTC) methods, there are usually undesired torque and flux ripples mainly for two reasons. First, the vectors selected are not necessary the best. Secondly, one-step delay influence in digital implementation causes additional torque and flux ripples. This paper proposes a novel predictive direct torque control (PDTC) strategy of the doubly fed induction generator (DFIG). The proposed strategy aims to reduce torque and flux ripples effectively at low constant switching frequency by appropriately arranging two active vectors followed by one zero vector within one control period. Furthermore, one-step delay is compensated using a mode-based prediction scheme. Finally, the control system is simplified through further analysis of the transient slope of torque and flux without performance degradation. Simulation results validate the proposed strategy with excellent steady-state and transient performance, which makes it very suitable for wind power generation.
Original languageEnglish
Title of host publication2011 IEEE International Electric Machines and Drives Conference, IEMDC 2011
Pages771-776
Number of pages6
DOIs
Publication statusPublished - 14 Sep 2011
Externally publishedYes
Event2011 IEEE International Electric Machines and Drives Conference, IEMDC 2011 - Niagara Falls, ON, Canada
Duration: 15 May 201118 May 2011

Conference

Conference2011 IEEE International Electric Machines and Drives Conference, IEMDC 2011
CountryCanada
CityNiagara Falls, ON
Period15/05/1118/05/11

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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