Electricity: motive power systems – Limitation of motor load – current – torque or force
Reexamination Certificate
2007-03-13
2007-03-13
Donovan, Lincoln (Department: 2837)
Electricity: motive power systems
Limitation of motor load, current, torque or force
C318S254100, C318S432000, C318S434000
Reexamination Certificate
active
11028254
ABSTRACT:
The invention relates to a method to control an electronically commutated motor in which the motor current is influenced as a function of an operating parameter of the motor. According to the invention, the motor current is adaptively switched as a function of the operating parameter of the motor. This means that the waveform over time of the motor current envelope is changed as a function of the operating parameter in such a way that for a value of the operating parameter below a fixed threshold value, a motor current for minimum noise generation is applied and for a value of the operating parameter above the fixed threshold value, a motor current for maximum efficiency of the motor is applied.
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Cooper & Dunham LLP
Donovan Lincoln
Glass Erick
Minebea Co. Ltd.
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