2014 Fiscal Year Final Research Report
Nobel Permanent Magnet Motor Capabe of Changing Machine Constants for Energy Saving
Project/Area Number |
24560346
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Power engineering/Power conversion/Electric machinery
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Research Institution | Toyo University |
Principal Investigator |
SAKAI Kazuto 東洋大学, 理工学部, 教授 (40377099)
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Project Period (FY) |
2012-04-01 – 2015-03-31
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Keywords | 電気機器 / パワーエレクトロニクス / モータ / 省エネルギー / 高効率 / 可変速 / 永久磁石 / 極数変換 |
Outline of Final Research Achievements |
We developed a technique in which the number of poles in a permanent magnet (PM) motor is varied to reduce energy consumption. We explain the principle involved and the basic characteristics of the pole-changing motor using a magnetic field analysis, which consists of a PM magnetized by a pulse d-axis current in the armature winding. Our results show that the proposed motor reduces iron loss by about 50 %, has double the speed range, and has high efficiency over a wide speed range. Furthermore, we manufactured a principle model of the electronics motor capable of pole changing in order to verify a function of pole changing. The electronics motor has each armature coil that connects each inverter circuit in order to control the current of the coil. Our results of the experiment confirmed that the motor can change poles during rotation. Therefore, the proposed motor can be utilized in a variable-speed drive system for high performance and efficiency.
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Free Research Field |
電気工学
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