Analysis of brushless four-pole three-phase synchronous generator without exciter by the finite element method

Nonaka, Sakutaro; Kesamaru, Katsumi; Horita, Keisuke

doi:10.1109/28.293709

Cited by 14 publications

(11 citation statements)

References 5 publications

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“…If Z r =(ωM) 2 Y 22 , primary input impedance is Z 11 +Z r according equation (1). The influence of secondary system to primary system is reflected by the Z r .…”

Section: Analysis Of Primary and Secondary Winding Equivalent Circuitmentioning

confidence: 99%

See 1 more Smart Citation

Optimum Efficiency Analysis and Simulation for Separable Transformer of Contactless Excitation Energy Transfer

Liu¹,

Wang²,

Gong³

2016

IJHIT

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“…If Z r =(ωM) 2 Y 22 , primary input impedance is Z 11 +Z r according equation (1). The influence of secondary system to primary system is reflected by the Z r .…”

Section: Analysis Of Primary and Secondary Winding Equivalent Circuitmentioning

confidence: 99%

“…So some papers also report research on brushless excitation. Nonaka S. [1] proposed a scheme with no brush and exciter. Its stator winding was two suite of parallel three phase winding and one suite of direct current (DC) winding.…”

Section: Introductionmentioning

confidence: 99%

Optimum Efficiency Analysis and Simulation for Separable Transformer of Contactless Excitation Energy Transfer

Liu¹,

Wang²,

Gong³

2016

IJHIT

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show abstract

“…Because of half-wave rectification, the rotor induced field at lower speed machines is weak, in compare to excitation field at conventional synchronous generator (SPSG) which is energized by DC exciter via slip rings. To obtain an efficient magnetic field, previous BSERSG is better designed for one or double pole pairs applications [3], [4].…”

Section: Introductionmentioning

confidence: 99%

“…Other than the type of current rectification in rotor field windings, the circuit parameters and connection are almost similar for single phase machine models. For three phase machine, the previous brushless synchronous generator needs additional control system to regulate the output voltage [3]. Whereas, the regulation in a three-phase machine of developed model can be obtained by using a three-phase auxiliary winding at rotor construction instead of single-phase, shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Development in design of brushless self-excited and self-regulated synchronous generator

Izzat

Heier

2013

2013 International Conference on Renewable Energy Research and Applications (ICRERA)

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A developed model of brushless capacitor-excited synchronous generator of wound rotor type is presented. Approximate analysis is illustrated by using generalized machine theory. Theoretical results are investigated by using FEM simulation and animation. Comparison of design and time response characteristics between the developed, previous and DC exciter generator models are studied. In presented model, initial excitation is activated by residual magnetism and induced capacitor current in stator auxiliary winding. At load, it is self compensated with flat-compound characteristics, by making use of backward field of armature reaction and half-and also fullwave induced components in rotor windings. At steady state, the main magnetic field of rotor is much higher than the auxiliary field. At transient state, the alternating current in rotor auxiliary windings provides the machine with damping features. The construction is compact, maintenance free and easily applicable as 1 or 3 phases for multi-poles, wind generators; as well as two poles diesel-engine generators. More, a fair matching between theoretical and experimental prototype results is obtained.

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“…The SRM, in effect, is an advanced type of stepping motor in which the current waveform of the machine must be carefully P w i W " e d to match the variation profile of the internal magnetic field so that maximum torque/ampere is extracted [1][2][3][4]. In realizing the optimal current programming, many difficult problems must be solved, which relies heavily on the proper modeling and comprehensive understanding of the entire SRM various methods have been applied to adapt the parameters, especially the inductance, to the operating conditions, accounting for the nonlinear characteristics of the magnetic field.…”

Section: Introductionmentioning

confidence: 99%

Direct modeling of switched reluctance machine by coupled field-circuit method

Ruckstadter²

1995

IEEE Trans. On energy Conversion

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Transient analysis of a switched reluctance machine (SRM) system is complicated by its unconventional non-sinusoidal operation and highly nonlinear characteristics. The analysis, however, is essential not only for optimizing the SRM magnetic structure but also for proper control of the associated power electronic circuit. In this paper, a direct modeling method for analysis of a SRM system including the power electronic converter, control and the nonlinear magnetic field of the SRM is established. The finite element method is used to model the nonlinear magnetic field, and is coupled to the circuit model of the SRM overall system. Assumptions of current density in FEA and various types of flux-current characteristics in circuit analysis are eliminated. With simultaneous computation over the entire system, the computer model provides abundant information regarding the SRM system. Experimental results are presented to prove the accuracy of the model.

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Analysis of brushless four-pole three-phase synchronous generator without exciter by the finite element method

Cited by 14 publications

References 5 publications

Optimum Efficiency Analysis and Simulation for Separable Transformer of Contactless Excitation Energy Transfer

Optimum Efficiency Analysis and Simulation for Separable Transformer of Contactless Excitation Energy Transfer

Development in design of brushless self-excited and self-regulated synchronous generator

Direct modeling of switched reluctance machine by coupled field-circuit method

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