IP Library › Granted Patent US 7,633,195
Granted Patent B2
US 7,633,195 · App. 10/390,039 · Granted Dec 15, 2009

Electrical machine with integrated electronic power device

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Quick Facts
Patent No.
US 7,633,195
App. No.
10/390,039
Granted
Dec 15, 2009
Kind
B2
Abstract

An electrical machine ( 10 ) includes a rotor ( 12 ) and a stator ( 11 ) arranged within a machine housing ( 23 ) which are cooled by at least one cooling circuit ( 16 A, 16 B). The machine ( 10 ) further includes power semiconductors which constitute part of an electronic power device ( 18 ) associated with the machine ( 10 ), and which are arranged within the machine housing ( 23 ) and are cooled by a cooling device ( 19, . . . , 21 ). A flexible arrangement and cooling of the electronic power device ( 18 ) is achieved by providing a cooling device ( 19, . . . , 21 ) for the electronic power device ( 18 ) which is independent of the at least one cooling circuit ( 16 A, 16 B) of the rotor ( 12 )and the stator ( 11 ).

Claims (31)

1. An electrical machine comprising:

a machine housing;

at least one cooling circuit;

a rotor having a shaft;

a stator;

wherein the rotor and stator are arranged within the machine housing and cooled by the at least one cooling circuit;

wherein the at least one cooling circuit comprises a fan arranged on said rotor shaft;

an electronic power unit including cooling means and power semiconductors arranged in the machine housing, the power semiconductors cooled by the cooling means;

wherein said cooling means is independent of the at least one cooling circuit of the rotor and the stator, said cooling means for exclusively cooling the electronic power unit;

wherein said cooling means comprises and is driven by means arranged separately from said rotor shaft; and

wherein the electrical machine comprises a generator.

2. An electrical machine according to claim 1 , wherein the electronic power device comprises a converter.

3. An electrical machine according to claim 1 , wherein the electrical machine includes a coil, and wherein the power semiconductors are at least partially integrated in said coil.

4. An electrical machine according to claim 1 , wherein the cooling means comprises fluid circuits or heat pipes which dissipate heat outwardly from the power semiconductors.

5. An electrical machine according to claim 1 , wherein said cooling means comprises at least one independent cooling circuit.

6. An electrical machine according to claim 2 , wherein the converter comprises a frequency converter.

7. An electrical machine comprising:

a machine housing;

at least one cooling circuit;

a rotor having a shaft;

a stator;

wherein the rotor and stator are arranged within the machine housing and cooled by the at least one cooling circuit;

wherein the at least one cooling circuit comprises a fan arranged on said rotor shaft;

an electronic power unit including cooling means and power semiconductors arranged in the machine housing, the power semiconductors cooled by the cooling means; and

a coil, wherein the power semiconductors are at least partially integrated in said coil;

wherein said cooling means is independent of the at least one cooling circuit of the rotor and the stator, said cooling means for exclusively cooling the electronic power unit;

wherein said cooling means comprises and is driven by means arranged separately from said rotor shaft.

8. An electrical machine according to claim 7 , wherein the electronic power device comprises a converter.

9. An electrical machine according to claim 8 , wherein the converter comprises a frequency converter.

10. An electrical machine according to claim 7 , wherein the cooling means comprises fluid circuits or heat pipes which dissipate heat outwardly from the power semiconductors.

11. An electrical machine according to claim 7 , wherein said cooling means comprises at least one independent cooling circuit.