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Design and analysis of a dual-stator brushless doubly-fed induction machine with a staggered dual-cage rotor

Science China(Technological Sciences) 2022年第6期65卷 1318-1329页

作者： CHENG Ming ZENG Yu YAN XiaoMing ZHANG ChangGuo School of Electrical Engineering Southeast UniversityNanjing 210096China

In this paper,a new dual-stator brushless doubly-fed induction machine with a staggered dual cage rotor is proposed,with emphasis on the general interconnection rule of the conductor bars for the staggered dual cage rotor.Since the squirrel cage rotor offers the merits of robustness,reliable structure,high slot filling factor,and low rotor resistance comparing to the wound rotor,it is introduced to the dual-stator brushless doubly-fed induction machine to solve the problems of high copper loss and unreliable rotor structure for the dual-stator brushless doubly-fed induction machine with a wound rotor.The originality of this article is to investigate the interconnection rule of conductor bars between the inner and outer cages.The constraint condition that is supposed to be satisfied is deduced by using the rotating magneto-motive force theory,based on which diverse slot/pole combinations are investigated.The performance comparison between the existing and proposed machines is conducted.Finally,a prototype is designed and fabricated.The experimental results verify the effectiveness of the proposed topology.

关键词： brushless doubly-fed machine dual cage rotor design wind power generation

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Overview of Research and Development Status of brushless doubly-fed machine System

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Chinese Journal of Electrical Engineering 2016年第2期2卷 1-13页

作者： Fengge Zhang Siyang Yu Hao Wang Yutao Wang Dapeng Wang Shenyang University of Technology Shenyang110870China

The brushless doubly-fed machine(BDFM)has been widely used due to its advantages of robustness,reliable operation,ease of maintenance,adjustable power factor,small converter capacity and low cost.BDFM is attractive for use in many applications such as variable frequency speed regulation systems and variable speed constant frequency generation systems.Hence,there is a rapidly growing interest in design and control of BDFM.In this paper,the origin and development of BDFM are reviewed,the structural characteristics of BDFM are discussed at length,the principles of operation and design are analyzed,and the different control methods used for BDFM are overviewed and compared in detail.Finally,challenges and opportunities of BDFM are concluded.

关键词： brushless doubly-fed machine structure characteristics rotor type operation principle design feature control method

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brushless doubly-fed machines:Opportunities and Challenges

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Chinese Journal of Electrical Engineering 2018年第2期4卷 1-17页

作者： Peng Han Ming Cheng Sul Ademi Milutin G.Jovanovic School of Electrical Engineering Southeast UniversityNanjing 210096China Warwick Manufacturing Group University of WarwickCoventryUK Faculty of Engineering and Environment Northumbria UniversityNewcastle upon TyneUK

The brushless doubly-fed machine(BDFM)is a family of multiport electric machines with two ac electrical ports and a common mechanical port.Different from the conventional singly-fed machines whose synchronous speed is solely determined by a single supply frequency and the actual pole pair number,the BDFM has two supply frequencies and two different pole pair numbers to control the rotor speed.By the two accessible electrical ports,all BDFMs are endowed with more degrees of freedom for speed and power control,inherent fault-tolerant capability and high reliability.The BDFM in its broad sense has been extensively investigated as a promising alternative to the conventional slip-ring doubly-fed induction machine(DFIM)during the past decades,for both limited and wide speed range applications.This paper presents a new theoretical framework of the BDFM within which all topological variants can be closely linked by the similarities in working principle.The individualities of each machine topology are presented first,followed by the commonalities such as the modeling techniques,modes of operation,design considerations and control strategies.The challenges are identified and highlighted based on recent developments and possible opportunities are predicted considering the unique nature of this special AC machine type.

关键词： brushless doubly-fed machine multiport electric machine modeling techniques modes of operation design considerations control strategies

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