The Experts below are selected from a list of 22986 Experts worldwide ranked by ideXlab platform
Zhiquan Deng - One of the best experts on this subject based on the ideXlab platform.
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Compensation Strategy of levitation forces for single winding bearingless switched reluctance motor with one winding total short circuited
IEEE Transactions on Industrial Electronics, 2016Co-Authors: Xin Cao, Han Yang, Lei Zhang, Zhiquan DengAbstract:In order to take advantage of conventional switched reluctance motors (SRMs), the SRM is integrated with the bearingless motor technology and then a reluctance type of bearingless motor is created, named as bearingless SRM (BSRMs). Not only electromagnetic torque but also the levitation forces should be controlled in BSRMs, which is different from SRMs. The levitation forces should always exist even when winding fault occurs. Therefore, the absent levitation forces that ought to be produced by the fault winding should then be compensated by other winding. This paper proposes the Compensation Strategy of levitation forces for BSRMs when one stator winding is short circuited. The short-circuit fault is investigated and the short-circuit current is expressed for the derivation of radial forces. Then, the winding Compensation rule and the mathematical model of levitation forces are developed to facilitate the Compensation control for the motor levitation. After that, the proposed Compensation Strategy is verified by simulation results in MATLAB/Simulink. Experimental results are also presented to demonstrate the performance.
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Compensation Strategy of short-circuit fault for a single-winding bearingless switched reluctance motor
2014 17th International Conference on Electrical Machines and Systems (ICEMS), 2014Co-Authors: Han Yang, Zhiquan Deng, Xin Cao, Lei ZhangAbstract:Due to all winding currents are controlled independently, the fault-tolerant control of single-winding bearingless switched reluctance motor (SWBSRM) is more flexible. In this paper, a Compensation Strategy for short-circuit fault in SWBSRM is investigated to improve the reliability of BSRM. Firstly, the mathematical model with Compensation for short-circuit fault is established with consideration of two-phase coupling. Secondly, the validity of the proposed model is verified by the finite element method (FEM). Then a Compensation Strategy based on this model is proposed to realize rotor levitation in short-circuit fault mode. Finally, the proposed Strategy is verified by simulation.
Xin Cao - One of the best experts on this subject based on the ideXlab platform.
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Compensation Strategy of levitation forces for single winding bearingless switched reluctance motor with one winding total short circuited
IEEE Transactions on Industrial Electronics, 2016Co-Authors: Xin Cao, Han Yang, Lei Zhang, Zhiquan DengAbstract:In order to take advantage of conventional switched reluctance motors (SRMs), the SRM is integrated with the bearingless motor technology and then a reluctance type of bearingless motor is created, named as bearingless SRM (BSRMs). Not only electromagnetic torque but also the levitation forces should be controlled in BSRMs, which is different from SRMs. The levitation forces should always exist even when winding fault occurs. Therefore, the absent levitation forces that ought to be produced by the fault winding should then be compensated by other winding. This paper proposes the Compensation Strategy of levitation forces for BSRMs when one stator winding is short circuited. The short-circuit fault is investigated and the short-circuit current is expressed for the derivation of radial forces. Then, the winding Compensation rule and the mathematical model of levitation forces are developed to facilitate the Compensation control for the motor levitation. After that, the proposed Compensation Strategy is verified by simulation results in MATLAB/Simulink. Experimental results are also presented to demonstrate the performance.
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Compensation Strategy of short-circuit fault for a single-winding bearingless switched reluctance motor
2014 17th International Conference on Electrical Machines and Systems (ICEMS), 2014Co-Authors: Han Yang, Zhiquan Deng, Xin Cao, Lei ZhangAbstract:Due to all winding currents are controlled independently, the fault-tolerant control of single-winding bearingless switched reluctance motor (SWBSRM) is more flexible. In this paper, a Compensation Strategy for short-circuit fault in SWBSRM is investigated to improve the reliability of BSRM. Firstly, the mathematical model with Compensation for short-circuit fault is established with consideration of two-phase coupling. Secondly, the validity of the proposed model is verified by the finite element method (FEM). Then a Compensation Strategy based on this model is proposed to realize rotor levitation in short-circuit fault mode. Finally, the proposed Strategy is verified by simulation.
Lei Zhang - One of the best experts on this subject based on the ideXlab platform.
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Compensation Strategy of levitation forces for single winding bearingless switched reluctance motor with one winding total short circuited
IEEE Transactions on Industrial Electronics, 2016Co-Authors: Xin Cao, Han Yang, Lei Zhang, Zhiquan DengAbstract:In order to take advantage of conventional switched reluctance motors (SRMs), the SRM is integrated with the bearingless motor technology and then a reluctance type of bearingless motor is created, named as bearingless SRM (BSRMs). Not only electromagnetic torque but also the levitation forces should be controlled in BSRMs, which is different from SRMs. The levitation forces should always exist even when winding fault occurs. Therefore, the absent levitation forces that ought to be produced by the fault winding should then be compensated by other winding. This paper proposes the Compensation Strategy of levitation forces for BSRMs when one stator winding is short circuited. The short-circuit fault is investigated and the short-circuit current is expressed for the derivation of radial forces. Then, the winding Compensation rule and the mathematical model of levitation forces are developed to facilitate the Compensation control for the motor levitation. After that, the proposed Compensation Strategy is verified by simulation results in MATLAB/Simulink. Experimental results are also presented to demonstrate the performance.
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Compensation Strategy of short-circuit fault for a single-winding bearingless switched reluctance motor
2014 17th International Conference on Electrical Machines and Systems (ICEMS), 2014Co-Authors: Han Yang, Zhiquan Deng, Xin Cao, Lei ZhangAbstract:Due to all winding currents are controlled independently, the fault-tolerant control of single-winding bearingless switched reluctance motor (SWBSRM) is more flexible. In this paper, a Compensation Strategy for short-circuit fault in SWBSRM is investigated to improve the reliability of BSRM. Firstly, the mathematical model with Compensation for short-circuit fault is established with consideration of two-phase coupling. Secondly, the validity of the proposed model is verified by the finite element method (FEM). Then a Compensation Strategy based on this model is proposed to realize rotor levitation in short-circuit fault mode. Finally, the proposed Strategy is verified by simulation.
Han Yang - One of the best experts on this subject based on the ideXlab platform.
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Compensation Strategy of levitation forces for single winding bearingless switched reluctance motor with one winding total short circuited
IEEE Transactions on Industrial Electronics, 2016Co-Authors: Xin Cao, Han Yang, Lei Zhang, Zhiquan DengAbstract:In order to take advantage of conventional switched reluctance motors (SRMs), the SRM is integrated with the bearingless motor technology and then a reluctance type of bearingless motor is created, named as bearingless SRM (BSRMs). Not only electromagnetic torque but also the levitation forces should be controlled in BSRMs, which is different from SRMs. The levitation forces should always exist even when winding fault occurs. Therefore, the absent levitation forces that ought to be produced by the fault winding should then be compensated by other winding. This paper proposes the Compensation Strategy of levitation forces for BSRMs when one stator winding is short circuited. The short-circuit fault is investigated and the short-circuit current is expressed for the derivation of radial forces. Then, the winding Compensation rule and the mathematical model of levitation forces are developed to facilitate the Compensation control for the motor levitation. After that, the proposed Compensation Strategy is verified by simulation results in MATLAB/Simulink. Experimental results are also presented to demonstrate the performance.
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Compensation Strategy of short-circuit fault for a single-winding bearingless switched reluctance motor
2014 17th International Conference on Electrical Machines and Systems (ICEMS), 2014Co-Authors: Han Yang, Zhiquan Deng, Xin Cao, Lei ZhangAbstract:Due to all winding currents are controlled independently, the fault-tolerant control of single-winding bearingless switched reluctance motor (SWBSRM) is more flexible. In this paper, a Compensation Strategy for short-circuit fault in SWBSRM is investigated to improve the reliability of BSRM. Firstly, the mathematical model with Compensation for short-circuit fault is established with consideration of two-phase coupling. Secondly, the validity of the proposed model is verified by the finite element method (FEM). Then a Compensation Strategy based on this model is proposed to realize rotor levitation in short-circuit fault mode. Finally, the proposed Strategy is verified by simulation.
Xiao Xiangning - One of the best experts on this subject based on the ideXlab platform.
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A Compensation Strategy for Differentiated Cascaded Current Quality Regulation Device
Power system technology, 2011Co-Authors: Xiao XiangningAbstract:Due to evident defects of high-capacity FACTS devices such as high manufacturing cost,high power loss and causing strong electromagnetic interference,the Compensation capacity of actually applied FACTS device is restricted.When the Compensation capacity demanded by power grid is larger than that of the Compensation device,how to choose appropriate Compensation Strategy to achieve optimal Compensation effect is significant for practical utilization of Compensation devices.The design principle and Compensation functions of differentiated cascaded current quality regulation device are presented.Combining the Compensation Strategy selection with its compensating capability,the merits and demerits of several compensating methods under insufficient Compensation capacity are analyzed.It is propose to apply genetic algorithm(GA) in compensating Strategy of Compensation devices to optimally allocate Compensation capacity for different compensating objects to achieve the aim of multi-object coordinative optimization.The availability of the proposed method is verified by practical example.
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A new analysis method for Compensation Strategy of DVR and minimum energy control
2010 5th IEEE Conference on Industrial Electronics and Applications, 2010Co-Authors: Guo Chunlin, Xiao Xiangning, Xu Yonghai, Liu Yingying, Tao ShunAbstract:The Compensation Strategy of the dynamic voltage restorer (DVR) has significant impact on the Compensation result. A new analysis method which is based on pre-sag load voltage is proposed in the paper. The new method chooses the pre-sag load voltage phasor as the reference phasor and put the centre of the limit Compensation voltage circle at the terminal of the system voltage phasor. It not only has definite physical concept but also is convenient to determine the Compensation range. More importantly, it could be applied to unbalanced load. The basic theory and process of the new method was explained and Compensation Strategy of the three-phase DVR was analyzed. Using the new method, the minimum energy Compensation Strategy was realized through the simulation when unbalanced voltage sag happened in the case of the unbalanced load. The conditions for zero active power Compensation was also analyzed which could prolong the Compensation time of DVR. The simulation result shows the correctness of the theoretical analysis.
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Research of shunt active power filter Compensation Strategy
Power System Protection and Control, 2010Co-Authors: Xiao XiangningAbstract:Based on that the Compensation capacity of the device used in practice is limited,this paper discusses Strategy of shunt active filter Compensation,combines the choice of Compensation Strategy of active filter with the Compensation ability of devices,and discusses superiority and inferiority of the Compensation Strategy in two situations,one is that the Compensation capacity can meet the needs of Compensation,and the other is that the Compensation capacity is less than the Compensation.And this paper suggests using genetic algorithm in the active filter Compensation Strategy to optimize the distribution of the Compensation capacity of each harmonic.Simulation verifies that the method can make the filtering effect achieve optimal results in a limited Compensation capacity.
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The Research of Shunt Active Power Filter Compensation Strategy
2009 International Conference on Energy and Environment Technology, 2009Co-Authors: Liu Shuming, Zhu Yongqiang, Su Ji-gui, Xu Yonghai, Xiao XiangningAbstract:The high capacity active filter have the problem of high cost, high power loss, strong electromagnetic interference and so on, the Compensation capacity of the device using in practical is limited, how to choose the right Strategy to achieve optimal Compensation plays an important role in the process of the device using in practical. This paper discussed Strategy of shunt active filter Compensation, and combined the choice of Compensation Strategy of active filter with the Compensation ability of devices, and discussed superiority and inferiority of the Compensation Strategy in two situations, one is that the Compensation capacity can meet the needs of Compensation, and the other is that the Compensation capacity is less than the Compensation. And this paper suggested that using genetic algorithm in the active filter Compensation Strategy to optimize the distribution of the Compensation capacity of each harmonic, and through the simulation, verified that the method can insure that the filtering effect achieve optimal results in a limited Compensation capacity.
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Minimum Energy Compensation Strategy and Characteristic Analysis for Dynamic Voltage Restorer
2009 International Conference on Energy and Environment Technology, 2009Co-Authors: Yingying Liu, Xiao Xiangning, Xu Yonghai, Guo ChunlinAbstract:The minimum energy Compensation Strategy and its characteristic for Dynamic Voltage Restorer (DVR) considering the equipment’s voltage limitation are discussed. The Strategy when the injection voltage is under or especially above the voltage limitation is proposed. And the detailed expressions of the Strategy which show that the Compensation effect is influenced by three factors -- magnitude of the system voltage sag (or swell), power factor of load and limitation value of the Compensation voltage were given. The Compensation characteristic that DVR could operate in zero, minimum or voltage limitation minimum active power exchange state if the three factors satisfy certain relations was analyzed. Last, the quantitative curves of the Compensation characteristic were given. The analysis results will be helpful to Compensation Strategy design and engineering practice for DVR.
