Modeling and Simulation of Permanent Magnet Synchronous Machine with Six-Phase Stator Winding

Katō, Susumu; Michihira, Masakazu; Tsuyoshi, Akira

doi:10.5416/jipe2003.34.0_183

Cited by 5 publications

(7 citation statements)

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“…In recent times, interest in the use of multiphase generators has reappeared, in conjunction with renewable electric-energy generating sources [210]- [215]. It needs to be emphasized though that there is no evidence at present of any industrial uptake of such solutions.…”

Section: Multiphase Machines In Electric-energy Generationmentioning

confidence: 99%

Multiphase Electric Machines for Variable-Speed Applications

Levi

2008

IEEE Trans. Ind. Electron.

1,862

795

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Although the concept of variable-speed drives, based on utilization of multiphase (n > 3) machines, dates back to the late 1960s, it was not until the mid-to late 1990s that multiphase drives became serious contenders for various applications. These include electric ship propulsion, locomotive traction, electric and hybrid electric vehicles, "more-electric" aircraft, and high-power industrial applications. As a consequence, there has been a substantial increase in the interest for such drive systems worldwide, resulting in a huge volume of work published during the last ten years. An attempt is made in this paper to provide a brief review of the current state of the art in the area. After addressing the reasons for potential use of multiphase rather than three-phase drives and the available approaches to multiphase machine designs, various control schemes are surveyed. This is followed by a discussion of the multiphase voltage source inverter control. Various possibilities for the use of additional degrees of freedom that exist in multiphase machines are further elaborated. Finally, multiphase machine applications in electric energy generation are addressed.Index Terms-Multiphase electric machines, multiphase variable-speed drives, multiphase voltage-source inverters (VSIs).

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Section: Multiphase Machines In Electric-energy Generationmentioning

confidence: 99%

Multiphase Electric Machines for Variable-Speed Applications

Levi

2008

IEEE Trans. Ind. Electron.

1,862

795

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“…Therefore, it is significantly difficult to simulate both systems by using the equivalent circuit on the  reference frame in consideration of commutation overlap. Hence we used the original simulation tool developed by one of the present authors [7,8]. Since the original simulation tool uses the voltage and torque equations on the abc reference frame, there is no need not only to derive those equations on the  reference frame but also to consider commutation overlap and the conducting states of diodes.…”

Section: Simulation Methodsmentioning

confidence: 99%

“…In order to use an inexpensive power converter instead of an expensive pulse-width modulation (PWM) rectifier, the conventional power generation system using a three-phase PMSG and a threephase diode bridge rectifier shown in Figure 1 have been proposed [2]. From the results of computer simulation, we found that the fifth and seventh harmonic stator currents produced large pulsation of the DC current and electromagnetic torque [3,4].…”

Section: Introductionmentioning

confidence: 99%

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A Comparative Study on Power Generation Characteristics of Permanent Magnet Synchronous Generators for Green Ship

Katō¹,

Cho²,

Michihira³

2012

Journal of the Korean Society of Marine Engineering

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：For reduction of the amount of CO2 emitted from ships, power generation characteristics of two power generation systems consisting of a high-efficiency permanent magnet synchronous generator and diode bridge rictifiers are discussed in this paper. One of the discussed systems has three-phase stator windings, and the other has two sets of three-phase (six-phase) stator windings to reduce pulsation in the electromagnetic torque and DC current. Experimental results reveal that the power generation efficiency of the system having six-phase stator windings is higher than that of the system having three-phase stator windings for a light load. The maximum power generation efficiency of the system having six-phase stator windings is almost the same as that of the system having three-phase stator windings. For the electromagnetic torque of the system having six-phase stator windings, the width of pulsation is about one-fifth compared to the system having three-phase stator windings.

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“…Therefore, the circuit topology of those systems is continually changed by the conducting states of diodes, so that it is pretty difficult to simulate those systems by using the equivalent circuit on d and q axes. In this paper, we used the original simulation tool developed by one of the present authors [4] [5]. The original simulation tool adopts the voltage and torque equations on a, b, and c axes and thus it is not necessary to derive these equations on d and q axes and to consider the conducting states of diodes.…”

Section: A Simulation Toolmentioning

confidence: 99%

A low-cost wind generator system with a permanent magnet synchronous generator and diode rectifiers

Katō¹,

Inui²,

Michihira³

et al. 2007

REPQJ

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Abstract.A low-cost wind generator system for small-or medium-scale wind generator is proposed. The system consists of a permanent magnet synchronous generator (PMSG) with two sets of the three-phase stator windings, i.e. six-phase stator winding, two three-phase diode rectifiers, a boost chopper, and a three-phase pulse-width modulation (PWM) inverter. Since two sets of three-phase stator windings are spatially shifted by 30 electrical degrees, the system can cancel out the dominant harmonic magnetomotive forces (MMF) produced by the harmonic currents of diode rectifiers. The simulation and experimental results show that the proposed system can significantly reduce the pulsation of the developed torque and the DC current by more than 60 % in comparison with the conventional system consisting of a three-phase PMSG and a three-phase diode rectifier. Therefore, the proposed system can use a smaller smoothing reactor in the boost chopper, so that the lower initial cost can be realized, and it is suitable for small-or medium-scale wind generator systems.

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Modeling and Simulation of Permanent Magnet Synchronous Machine with Six-Phase Stator Winding

Cited by 5 publications

References 0 publications

Multiphase Electric Machines for Variable-Speed Applications

Multiphase Electric Machines for Variable-Speed Applications

A Comparative Study on Power Generation Characteristics of Permanent Magnet Synchronous Generators for Green Ship

A low-cost wind generator system with a permanent magnet synchronous generator and diode rectifiers

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