Design, Modeling, and Control of a Novel Hybrid-Excited Flux-Bidirectional-Modulated Generator-Based Wind Power Generation System

Qingsong Wang, Shuangxia Niu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

22 Citations (Scopus)


This paper proposes a novel hybrid excited generator, which is suitable for a variable-speed wind power generation system. Two sets of excitation sources are employed, which are permanent magnets (PMs) on the rotor and the field windings on the stator. The rotor is design with PM-iron structure, namely the PMs and iron poles are alternatively located in rotor, which can provide PM excitation and flux modulating simultaneously. Meanwhile, the adjacent stator teeth are designed with different height, which enables the stator with flux modulating effect, and, therefore, bidirectional flux modulating can be achieved. Some specific harmonics excited by the rotor PMs can be effectively adjusted by the field current, and the back electromotive force and electromagnetic torque can be regulated accordingly. Therefore, the proposed generator can achieve constant voltage control and maximum power point tracking control by controlling the field current. The design considerations and field regulating principle are analytically investigated. An improved Tabu search algorithm is used to optimize the proposed generator, and finite-element method is used to realize preliminary study of the electromagnetic performances. A prototype is manufactured and experimental tests are conducted to verify the theoretical analysis and control strategies.
Original languageEnglish
Article number7927718
Pages (from-to)3086-3096
Number of pages11
JournalIEEE Transactions on Power Electronics
Issue number4
Publication statusPublished - 1 Apr 2018


  • Bidirectional flux modulating
  • constant voltage
  • maximum power point tracking (MPPT) control
  • permanent magnet (PM)-iron structure

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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