Rotating electric machine with built-in control device
First Claim
1. A rotating electric machine with a built-in control device comprising:
- a main body of the rotating electric machine including;
a stator;
a rotor having a rotary shaft;
brackets provided on both sides of said stator, one on a load side and the other on a side opposite the load side, for rotatably supporting said rotor via said rotary shaft; and
a fan which is provided on said rotor and rotates together with said rotor to induce a flow of cooling air for cooling at least one of said stator and said rotor; and
the control device including control components for controlling said main body of the rotating electric machine, said control device being fixed to the outside of the bracket on said side opposite the load side in an axial direction of said rotary shaft in such a manner that a particular spacing is formed between said control device and the bracket on said side opposite the load side and said flow of cooling air passes through this spacing.
1 Assignment
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Accused Products
Abstract
The invention is intended to obtain a rotating electric machine with a built-in control device in which the control device is kept from receiving heat from a main body of the rotating electric machine and the control device can be cooled in a desirable fashion. A heat sink (13) on which switching devices (12) of a control device (400) are mounted is attached to a rear bracket (6) by means of conductive studs (300) with a particular spacing provided in a left-to-right direction of FIG. 2. The heat sink (13) is cooled by a flow of cooling air induced by an unillustrated fan. Since the control device (400) is attached to the rear bracket (6) of which temperature increases with the spacing provided therefrom, it is possible to suppress heat transfer from the rear bracket (6) and effectively cool the control device (400) through the heat sink (13).
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Citations
9 Claims
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1. A rotating electric machine with a built-in control device comprising:
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a main body of the rotating electric machine including; a stator; a rotor having a rotary shaft; brackets provided on both sides of said stator, one on a load side and the other on a side opposite the load side, for rotatably supporting said rotor via said rotary shaft; and a fan which is provided on said rotor and rotates together with said rotor to induce a flow of cooling air for cooling at least one of said stator and said rotor; and the control device including control components for controlling said main body of the rotating electric machine, said control device being fixed to the outside of the bracket on said side opposite the load side in an axial direction of said rotary shaft in such a manner that a particular spacing is formed between said control device and the bracket on said side opposite the load side and said flow of cooling air passes through this spacing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification