Steady-state characteristics of a half-wave rectified brushless synchronous motor with permanent magnets.

Oyama, Jun; Abe, T.; Higuchi, Takashi; Yamada, Eiji

doi:10.1541/ieejias.109.507

Cited by 17 publications

(8 citation statements)

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“…Note 1: Assumptions 1) to 7) made in the development of the dynamic mathematical model in this study are identical to those implied by the circuit equations derived by Oyama, Abe and co-workers [4][5][6][7][8][9].…”

Section: Energy Transfer Equation (Third Basic Equation)mentioning

confidence: 90%

“…Note 2: It should be noted that the first basic equation in the proposed dynamic mathematical model is different from the circuit equation derived by Oyama and colleagues [4][5][6][7][8][9] in treating the flux Φ produced by a permanent magnet. In this study, according to the traditional representation for permanent-magnet synchronous motors [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26], Φ is interpreted as the maximum intensity of the magnetic flux produced by the permanent magnets.…”

Section: Energy Transfer Equation (Third Basic Equation)mentioning

confidence: 97%

“…We make the following reasonable assumptions used widely to build mathematical models for control system design (see Note 1 at the end of this section) [4][5][6][7][8][9]25]. A dynamic mathematical model for the SepE-HFSM was also developed under the above assumptions [25].…”

Section: Development Of Dynamic Mathematical Modelmentioning

confidence: 99%

“…Aiming at better performance of such self-excited synchronous motors, Oyama and colleagues proposed to supplement the diode-shorted field winding by permanent magnets in the late 1980s [4]. Considering that the rotor carries both the permanent magnets and field winding, this design may be classified with hybrid-field synchronous motors in a broad sense; below it is referred to as a self-excited hybrid-field synchronous motor (SelE-HFSM).…”

Section: Introductionmentioning

confidence: 99%

“…(2) The rotor field circuit is mechanically contactless. R&D regarding SelE-HFSM has been started by Oyama, Abe and the co-workers in terms of circuit equations, the development of a circuit-type simulator, and the estimation of rotor's initial position [4][5][6][7][8][9]. However, characteristic analysis of the field circuit specific to SelE-HFSM is rather complicated, as may be imagined from the excitation structure.…”

Section: Introductionmentioning

confidence: 99%

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Self‐excited hybrid‐field synchronous motors

Shinnaka

2008

Elect Comm in Japan

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SUMMARYThis paper proposes a new well-organized dynamic mathematical model and new dynamic vector simulators for newly emerging self-excited hybrid-field synchronous motors (SelE-HFSMs) that have rotor field by both permanent magnet and diode-shorted field winding. The proposed new mathematical model has the following completeness and generality: (1) it consists of three consistent basic equations such as circuit, torque-evolution, and energytransmission equations; (2) it deals with pole saliency and contains nonsaliency as a special case; (3) it is a dynamic model and contains a static one as a special case; and (4) it is established in the general reference frame including the stator and rotor reference frames as special cases. The proposed new dynamic vector simulators are established in the form of a vector block diagram based on the new model. They have the following attractive features: (1) they succeed in realizing clear configurations with physically meaningful vector signals, which clearly show motor electromagnetic mechanism; (2) vector signals utilized as transfer signals between blocks are defined in the general reference frame; consequently, the simulators in the frame can be directly and easily reduced to the ones in the stator and rotor reference frames; (3) they are compact, and can be easily programmed by commercially available standard simulation software. Two typical and compact but sufficiently general dynamic vector simulators are newly presented. Validity of the model is verified analytically, and validity of the simulators is confirmed by numerical experiments.

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Section: Energy Transfer Equation (Third Basic Equation)mentioning

confidence: 90%

Section: Energy Transfer Equation (Third Basic Equation)mentioning

confidence: 97%

Section: Development Of Dynamic Mathematical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Self‐excited hybrid‐field synchronous motors

Shinnaka

2008

Elect Comm in Japan

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Analysis of characteristics of half‐wave rectified brushless synchronous motor with permanent magnets

Oyama

Higuchi

Abe

et al. 1993

Electrical Engineering Japan

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Previously, the authors proposed a “half‐wave rectified brushless synchronous motor” as a novel servomotor. The rotor winding emf of the motor is induced by the stator current mmf which rotates at synchronous speed and pulsates at bias frequency. The field excitation is produced by the field current obtained from rectifying the emf with a diode inserted into the field winding. To improve the power factor and the efficiency, they also proposed a new‐type half‐wave rectified brushless synchronous motor with permanent magnets. This paper analyzes the flux distribution and the torque characteristics of the new half‐wave rectified brushless synchronous motor using the finite element method. The computed torque characteristics are confirmed with the experimental results. Furthermore, the steady‐state characteristic equations are derived and the effect of the modulation function waveforms on the motor performance is investigated. The theory also is confirmed by the experiments.

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Fundamental characteristics and first prototype of a novel claw pole type half-wave rectified variable field flux motor

Abe

Ohba

Higuchi

2016

COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering

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Purpose – Recently, considerable attention has been attracted to the development of the new concept motor for EV or HEV. Wider torque and speed controllable operating range and high efficiency under driving area are needed for traction motor. The purpose of this paper is to realize the new concept variable field flux motor with claw pole rotor and brushless robust structure for high-speed range. Design/methodology/approach – In the previous paper, the authors proposed a half-wave rectified brushless variable field flux method with a diode inserted into the field winding. This paper presents a designing for a novel claw pole rotor type motor using the variable field flux method (CP-HVFM). The claw pole type rotor has simple and robust structure for high-speed operation. This paper describes a first prototype design result for CP-HVFM using 3D-FEM. And the authors report the torque and efficiency characteristic results using 3D-FEM. Findings – The authors have studied the designing for CP-HVFM using 3D-FEM. The designed prototype CP-HVFM reached a rated power of 2 kW or more at a rated speed 1,800 rpm under design restrictions of experimental equipment and initial specifications. In addition, the authors found the ratio of the tip and root embrace of the claw pole shape for maximum average torque and minimum torque ripple. Finally, the authors revealed an influence of the armature current on the torque and the efficiency characteristic results for the designed prototype CP-HVFM using 3D-FEM. Originality/value – The half-wave rectified brushless variable field flux method proved to be effective for the claw pole rotor type motor. And also the authors found the best claw pole shape for torque characteristic. This results are applied to another concept motor for EV or HEV.

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Steady-state characteristics of a half-wave rectified brushless synchronous motor with permanent magnets.

Cited by 17 publications

References 0 publications

Self‐excited hybrid‐field synchronous motors

Self‐excited hybrid‐field synchronous motors

Analysis of characteristics of half‐wave rectified brushless synchronous motor with permanent magnets

Fundamental characteristics and first prototype of a novel claw pole type half-wave rectified variable field flux motor

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