Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1989-12-13
1991-09-17
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 67R, 310 68R, 310 68B, 361386, 361388, H02K 518, H02K 1100, H02B 100, H02B 156
Patent
active
050497693
ABSTRACT:
The invention relates to a collectorless direct-current external-rotor motor (2), which includes a stator (6) with stator windings (12) fastened to a motor flange (4), an external rotor (14) enclosing the stator (6) on its side facing away from the motor flange (4), as well as an electronic circuit arrangement (18) driving the stator windings (12). This circuit arrangement (18) has a conductor plate (24) provided with electronic components (22) arranged adjacent to the flange-side facing the stator (6), as well as several power semiconductors (28) electrically connected to the conductor plate (24), arranged in heat-conducting contact with the motor flange (4). The power semiconductors (28) are joined indirectly by an annular disk-form cooling body (40) to the motor flange (4) to provide a heat-conducting effect. The cooling body (40) forms a preassembled component with the conductor plate (24) and a carrier element (42) which support the conductor plate (24).
REFERENCES:
patent: 3809935 (1974-05-01), Kristen et al.
patent: 4365187 (1982-12-01), McDaniel et al.
patent: 4724347 (1988-02-01), Reinhardt et al.
patent: 4840222 (1989-06-01), Lakin et al.
Best Dieter
Jakob Franz
Rebenstrost Rudolf
Reinhardt Wilhelm
ebm Elektrobau Mulfingen GmbH & Co.
LaBalle C.
Stephan Steven L.
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