Recent Advances of Reluctance Torque Assisted Motors.

Ohyama, Kazunobu

doi:10.1541/ieejias.123.63

Cited by 17 publications

(10 citation statements)

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“…Motors [4,5] Table I compares the structures and features of IMs, surface permanent magnet synchronous motors (SPMSMs), IPMSMs, and switched reluctance motors (SRMs) for compressor drive applications. Figure 4 shows the efficiency characteristics of compressor motors for residential air conditioners.…”

Section: Energy-saving Technologies For Compressormentioning

confidence: 99%

Energy‐Saving Technologies for Inverter Air Conditioners

Ohyama

Kondo

2008

IEEJ Transactions Elec Engng

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Almost all residential air conditioners in Japan are inverter air conditioners in which a permanent magnet synchronous motor (PMSM) is driven by a PWM inverter. The inverter technology can reduce the energy consumption to less than half that of air conditioners driven by a constant-speed induction motor (IM). This paper reviews the trends and the latest energy-efficient technologies for the motor and the power converter that achieve considerable energy saving. 

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Section: Energy-saving Technologies For Compressormentioning

confidence: 99%

Energy‐Saving Technologies for Inverter Air Conditioners

Ohyama

Kondo

2008

IEEJ Transactions Elec Engng

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“…The comparative efficiency performances of induction motor (IM), SPMSM and IPMSM are shown in Fig. 4 [5]. The maximum efficiency of IPMSM reaches 95%.…”

Section: Rotor Designmentioning

confidence: 99%

“…The technique of reducing vibration and noise is discussed in Section 4. Figure 6 shows the comparative efficiency characteristics of IPMSMs for compressor motor with distributed winding and concentrated winding [5]. Using concentrated winding increases the efficiency, especially in low speed regions, in which copper loss is more predominant than core loss.…”

Section: Stator Designmentioning

confidence: 99%

“…Figure 7 shows one example of the transition of using silicon steels for compressor motors [6]. The demand for core loss decrease became a predominant factor when copper loss decreased by changing from IM to SPMSM to achieve more energy saving ((a) → (b)).…”

Section: Electromagnetic Materialsmentioning

confidence: 99%

“…Therefore the development of silicon steel that satisfies both a low core loss and a high flux density is the recent trend ((c) → (d)). Figure 8 shows the trend in permanent magnet materials of the compressor motor [6]. The mass production of the PMSM for a compressor motor started in 1982.…”

Section: Electromagnetic Materialsmentioning

confidence: 99%

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Trend of permanent magnet synchronous machines

Morimoto

2007

IEEJ Transactions Elec Engng

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The performance of permanent magnet synchronous machines (PMSMs) has improved rapidly by the progress in elemental technologies such as electromagnetic material technology, computer-aided design technology, control technique, and drive circuit technology, and thus PMSMs are attractive as high-performance machines in various fields. This paper describes the recent technology and the trends in PMSMs. To begin with the PMSMs are classified by the ratio of magnet torque to the reluctance torque and their features described, then the trend of the motor design and the electromagnetic material for highly efficient PMSM is shown. The technologies that help to reduce the vibration and noise are also described, and the recently developed PMSMs for traction drive application are introduced. 

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Reduction of Vibration in Concentrated Winding Permanent Magnet Synchronous Motor by Means of Skew Effects of Rotor

Takahata

Wakui

Miyata

et al. 2014

Electrical Engineering Japan

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SUMMARYGlobal warming and the problem of successfully incorporating environmental safeguards are promoting the need for a more power-efficient motor. Therefore, as a driving source, permanent magnet synchronous motors (PMSMs) with concentrated winding are widely used in a variety of fields. However, a PMSM with a concentrated winding generates more vibration than one with a distributed winding because of the radial electromagnetic force. This paper describes the effect of a new skewed rotor on the characteristics of a concentrated winding PMSM. We investigated this effect by three-dimensional finite element method (3D FEM) analysis and measurement. We also demonstrate that the proposed rotor is effective in reducing the radial electromagnetic force without decreasing motor efficiency. C⃝ 2014 Wiley Periodicals, Inc. Electr Eng Jpn, 187(2): 33-43, 2014; Published online in Wiley Online Library (wileyonlinelibrary.com).

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Recent Advances of Reluctance Torque Assisted Motors.

Cited by 17 publications

References 0 publications

Energy‐Saving Technologies for Inverter Air Conditioners

Energy‐Saving Technologies for Inverter Air Conditioners

Trend of permanent magnet synchronous machines

Reduction of Vibration in Concentrated Winding Permanent Magnet Synchronous Motor by Means of Skew Effects of Rotor

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