Journal ArticleDOI
Analysis and Test Results of a Brushless Doubly Fed Induction Machine With Rotary Transformer
TLDR
This paper analyzes a 90-kW brushless doubly fed three-phase induction machine in which a wound rotor circuit is connected to a rotary transformer and presents the advantages of substituting brushes and slip rings by aRotary transformer.Abstract:
This paper analyzes a 90-kW brushless doubly fed three-phase induction machine in which a wound rotor circuit is connected to a rotary transformer. It presents the advantages of substituting brushes and slip rings by a rotary transformer. In addition, it shows the rotary transformer design and presents the doubly fed induction machine operation. The steady-state model considers electrical circuit techniques to provide information about current, power factor, and efficiency on load. Equivalent circuit parameters are obtained through laboratory tests under a prototype. Comparisons between simulation and measurement results attest the good performance of the adopted model.read more
Citations
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Journal ArticleDOI
Overview of Control Systems for the Operation of DFIGs in Wind Energy Applications
TL;DR: The control systems for the operation of DFIGs in wind energy applications are reviewed for connections to balanced or unbalanced grids, and sensorless control.
Journal ArticleDOI
Vector Control Methods for Brushless Doubly Fed Reluctance Machines
Sul Ademi,Milutin Jovanovic +1 more
TL;DR: Experimental studies have evaluated the control algorithms on a custom-built BDFRM in both motoring and generating modes under the maximum torque per inverter ampere conditions and should make a step forward toward the development of robust generic controllers for doubly excited machines.
Journal ArticleDOI
Sensorless Control of Standalone Brushless Doubly Fed Induction Generator Feeding Unbalanced Loads in a Ship Shaft Power Generation System
TL;DR: A second-order generalized integrator-based quadrature signal generator is introduced to realize the rotor speed observer for the standalone BDFIG feeding unbalanced loads and the compensation method ofnegative-sequence power winding voltage is proposed to eliminate the negative-sequence component of the unbalanced power winding Voltage.
Journal ArticleDOI
A New Sensorless Speed Control Scheme for Doubly Fed Reluctance Generators
TL;DR: A novel angular velocity observer-based field-oriented control algorithm for a promising low-cost brushless reluctance generator (BDFRG) in wind power applications is presented in this article.
Journal ArticleDOI
Emerging Multiport Electrical Machines and Systems: Past Developments, Current Challenges, and Future Prospects
TL;DR: This paper attempts to make a comprehensive overview of the existing multiport topologies, from fundamental characteristics to advanced modeling, analysis, and control, with particular emphasis on the extensively investigated brushless doubly fed machines for highly reliable wind turbines and power split devices for hybrid electric vehicles.
References
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Book
Transformer and inductor design handbook
TL;DR: In this paper, the authors present a theoretical analysis of transformer-inductor design, including the following: AC Inductor Design Powder Core. DC Inductor design Gap Core. Forward Converter Transformer and Inductor Development.
Journal ArticleDOI
Variable-Speed Wind Power Generation Using a Doubly Fed Wound Rotor Induction Machine: A Comparison with Alternative Schemes
R. Datta,V. T. Ranganathan +1 more
TL;DR: In this article, a wind energy conversion system (WECS) using a grid-connected wound rotor induction machine controlled from the rotor side is compared with both fixed speed and variable speed systems using cage rotor induction machines.
Journal ArticleDOI
Performance of BDFM as generator and motor
TL;DR: In this paper, the performance of the brushless doubly-fed machine (BDFM) was analyzed using a per-phase equivalent circuit and an expression for the rating of the machine as a function of magnetic and electric loadings was developed, and the rating was compared to those of the doublyfed induction machine and cascaded induction machines.
Journal ArticleDOI
Stator-Flux-Oriented Vector Control for Brushless Doubly Fed Induction Generator
TL;DR: The proposed vector controller is developed on the power-winding stator-flux frame and can be used to control both the speed and the reactive power of a BDFIG operating as a variable-speed generator.
Journal ArticleDOI
Generalised theory of the brushless doubly-fed machine. Part 1: Analysis
TL;DR: In this article, the authors developed the concept of the brushless doubly-fed machine (BDFM), from consideration of the frequency and distribution of the EMFs induced in bars of a conventional doubly wound cage motor.
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Design of a Low-Harmonic-Content Wound Rotor for the Brushless Doubly Fed Generator
Fei Xiong,Xuefan Wang +1 more