ELECTRIC MOTOR VEHICLE AUXILIARY UNIT AND METHOD FOR COMMUTATING A MOTOR VEHICLE AUXILIARY UNIT
1 Assignment
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Accused Products
Abstract
An electric motor vehicle auxiliary unit includes an electronically commutated drive motor comprising motor coils and an electronic commutator arrangement which energizes the motor coils. The electronic commutator arrangement includes a control unit, multiple power semiconductors each of which is controlled by the control unit, a motor current path, a motor current tap arranged in a course of the motor current path, and a high-pass filter arranged between the motor current tap and the control unit. The motor current tap is arranged so that a voltage signal proportional to a motor current IM drops at the motor current tap during a motor energization. The high-pass filter includes an input signal and an output signal. The input signal is the voltage signal and the output signal is a control signal for the control unit. The high-pass filter triggers a pole reversal after a delay following an input of a peak signal.
3 Citations
23 Claims
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1-10. -10. (canceled)
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11. :
- An electric motor vehicle auxiliary unit comprising;
an electronically commutated drive motor comprising motor coils; and an electronic commutator arrangement configured to energize the motor coils, the electronic commutator arrangement comprising; a control unit, multiple power semiconductors each of which is configured to be controlled by the control unit, a motor current path, a motor current tap arranged in a course of the motor current path, the motor current tap being arranged so that a voltage signal proportional to a motor current IM drops at the motor current tap during a motor energization, and a high-pass filter arranged between the motor current tap and the control unit, the high-pass filter comprising an input signal and an output signal, the input signal being the voltage signal and the output signal being a control signal for the control unit, the high-pass filter being configured so that, following an input of a peak signal, a pole reversal is triggered after a delay. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
- An electric motor vehicle auxiliary unit comprising;
Specification