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Apparatus for controller-integrated motor

A technology that integrates motor and controller

Inactive Publication Date: 2007-12-19
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the increased capacity of the motor prevents cooling from being achieved only by natural convection

Method used

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  • Apparatus for controller-integrated motor
  • Apparatus for controller-integrated motor
  • Apparatus for controller-integrated motor

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0033] 1 is a vertical sectional view of a controller-integrated motor according to a first embodiment of the present invention. Fig. 2 is a cross-sectional view of the no-load side of the controller-integrated motor according to the first embodiment of the present invention. The same components in Figs. 17, 1 and 2 are denoted by the same reference numerals and will not be described in detail. The different components will be mainly described below. Repeated descriptions are also omitted in subsequent embodiments.

[0034] The current controller-integrated motor includes a motor body 29 and a controller 13 installed on the motor body 29 . The motor body 29 includes a frame 3, an end plate 10, a stator core 8, a stator coil 9, a rotor core 2, a shaft 1 that rotates to apply a driving force on the motor body 29, and an external fan 4 that discharges a cooling air flow 30 to cool the motor body 29 .

[0035] In the motor body 29 the external fan 4 is fitted around the shaft ...

no. 2 approach

[0041] 3 is a vertical sectional view showing the structure of a controller-integrated motor according to a second embodiment of the present invention. 4 is a sectional view showing the structure of the no-load side of the controller-integrated motor according to the second embodiment of the present invention.

[0042] In the current controller-integrated motor, an upper controller 13 and a lower controller 13a are installed. The circuitry in the controller 13 is connected to the circuitry in the controller 13a. The connected circuits in the controllers 13 and 13a serve as a controller. A controller comprising a combination of controllers 13 and 13 a controls the motor body 29 . The rest of the structure is the same as that of the first embodiment.

[0043] The flow of cooling airflow 30 in the current controller integrated motor is similar to that in the first embodiment. Therefore, the cooling air flow 30 flows around the plurality of controllers 13 and 13a.

[0044] Acco...

no. 3 approach

[0046] 5 is a perspective view showing the structure of a controller for a controller-integrated motor according to a third embodiment of the present invention.

[0047] The controller-integrated motor according to the present embodiment is configured similarly to those according to the first and second embodiments except for the controller.

[0048] Current controller integrated motors have advancing airflow fins 16 and cooling airflow fins 17 on the face of the controller 13 .

[0049] The advancing airflow fins 16 are installed laterally (perpendicularly to the shaft 1 ) with respect to the motor main body 29 so as to allow the advancing airflow 31 caused by the motion of the vehicle to flow smoothly. The forward airflow fins 16 are preferably longer, but do not interfere with other components located around the motor body 29 .

[0050] Cooling air flow fins 17 are installed in the vertical direction (parallel to the shaft 1 ) so as to enable the cooling air flow 30 from t...

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PUM

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Abstract

A controller-integrated motor includes a motor main body and a controller integrated with the motor main body to control the motor main body, the motor main body, including a stator core, a shaft which rotates to exert driving force on the motor main body, a frame which holds the stator core and the shaft, and an outer fan provided around the shaft so that the motor main body is recessed inward toward a rotational center of the shaft, the outer fan discharging cooling air stream to cool the motor main body, the controller being provided in proximity to an outer periphery of the frame, the motor main body being formed so that a cooling air stream from the outer fan flows in an axial direction of the shaft along an outer peripheral surface of the frame.

Description

technical field [0001] The invention relates to a controller-integrated motor, which includes a motor mainly used to drive a vehicle and a controller integrated with the motor to control the motor. Background technique [0002] A vehicle's traction motor heats up in every part of it when the vehicle is in motion. The increase in temperature is caused by copper losses in the stator and rotor windings, iron losses in the stator, and other mechanical losses. Traction motors typically cool themselves using the following methods. A blower is provided which draws in outside air to force the airflow into the motor. A fan is provided in the motor and rotates to circulate a cool air flow through the motor. However, such a traction motor is constructed so that its inside and outside are connected (open type traction motor). Therefore, dust gets into the motor, requiring regular maintenance. Therefore, in recent years, a completely enclosed type traction motor with an external fan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K5/22H02K9/04
CPCH02K11/0073H02K5/20H02K9/06H02K9/14H02K11/33H02K5/203H02K5/207
Inventor 小山泰平野田伸一殿城贤三白石茂智
Owner KK TOSHIBA
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