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Magnetless rotary electric machine

A technology of rotating electrical machines and magnets, applied in the direction of magnetic circuit rotating parts, asynchronous induction motors, AC motor control, etc., to achieve the effects of improving efficiency, improving output, and improving magnetic pole characteristics

Active Publication Date: 2017-08-18
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Magnetless rotating machines have the advantage that expensive magnet materials are not used, but copper loss occurs due to rotor coils and the characteristics of magnetic poles magnetized by induced currents are not as strong as permanent magnets

Method used

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  • Magnetless rotary electric machine
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Embodiment Construction

[0033] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The number of poles, the number of salient poles, the ratio of the number of turns of the induction coil to the common coil, and the like described below are merely examples for illustration and can be appropriately modified in accordance with the specifications of the magnetless rotating electrical machine. In the following description, similar elements in all the drawings have the same reference numerals and repeated descriptions thereof are omitted.

[0034] figure 1 is the configuration diagram of a magnetless rotating electrical machine. In the following description, the magnetless rotating electrical machine 10 is referred to as the rotating electrical machine 10 unless otherwise indicated. figure 1 (a) in (a) is a view showing the overall configuration of the rotary electric machine 10 , and is a sectional view perpendicular to the axial direction...

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PUM

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Abstract

A magnetless rotary electric machine includes an annular rotor, an outer stator and an inner stator. The annular rotor includes an annular rotor yoke portion, outer salient poles, outer rotor coils, inner salient poles, inner rotor coils, first rectifying devices and second rectifying devices. The first salient pole is configured to be magnetized by an induction current induced by the first coil. Each of the first rectifying devices is configured to rectify current such that a direction of a magnetic pole of the first salient pole is a first direction. The second salient pole is configured to be magnetized by an induction current induced by the second coil. Each of the second rectifying devices is configured to rectify current such that the direction of a magnetic pole of the second salient pole is a second direction. The second direction is a reverse direction to the first direction.

Description

technical field [0001] The present invention relates to a magnetless rotating electrical machine, in particular to a magnetless rotary motor of a double stator type comprising an outer stator arranged radially outside relative to a ring rotor and an inside stator arranged radially inside relative to the ring rotor. motor. Background technique [0002] As a magnetless rotating electrical machine including a rotor that does not use a permanent magnet, there is known a configuration in which a rotor salient pole formed by winding a rotor coil around the rotor is provided, and the rotor is formed by a field system from the stator An induced current is generated in the coil so that the salient poles of the rotor are magnetized by the induced current. [0003] As a magnetless motor, Japanese Patent Application Publication No. 2010-279165 (JP 2010-279165A) describes a configuration in which a rotor configured to be rotated by a magnetic field formed by a stator is provided, and th...

Claims

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Application Information

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IPC IPC(8): H02K1/24H02K3/28H02K11/042H02K16/04
CPCH02K1/24H02K3/28H02K11/042H02K16/04H02K17/12H02K1/14H02P27/06
Inventor 五十岚英一山田英治
Owner TOYOTA JIDOSHA KK
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