FIELD: engines and pumps.
SUBSTANCE: device includes an electric motor and a current sensor, which are connected to a feed network through a voltage adjustment device, an integration unit, a zero speed sensor of the electric motor, a threshold element, a controlled voltage divider; besides, the device additionally includes a quad unit and a functional converter; determination of current temperature of an armature is performed in the device depending on current and rotation speed.
EFFECT: increasing sensitivity of protection to possible overloads of an electric motor with self-ventilation at low rotation speeds and currents below the rated one.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
RU2214665C2 |
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| SELF-TUNING ELECTRIC DRIVE | 2013 |
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RU2489250C1 |
