Electronically commutable motor, in particular, for a liquid pump
The invention relates to an electronically commutatable motor, in particular for a fluid pump, in which the excitation windings may be connected to a DC supply voltage and disconnected therefrom via semiconductor switches controlled by control signals of a commutation device, and in which the contro...
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| Main Authors | , |
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| Format | Patent |
| Language | English |
| Published |
23.03.2004
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| Online Access | Get full text |
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| Summary: | The invention relates to an electronically commutatable motor, in particular for a fluid pump, in which the excitation windings may be connected to a DC supply voltage and disconnected therefrom via semiconductor switches controlled by control signals of a commutation device, and in which the control signals of the commutation device are clocked by pulse width modulatable output signals of a PWM generator, the pulse width ratio of which may additionally be modified as a function of the output signal of the temperature sensor.
An electronically commutatable motor, in particular for a fluid pump, includes excitation windings that may be connected to and disconnected from a DC supply voltage via semiconductor switches that are controlled by control signals of a commutation device. Additional closed- and/or open-loop control of the output of the motor, is obtained with a temperature protection system in that the control signals of the commutation device are clocked by pulse width modulatable output signals of a PWM generator and in that the pulse width ratio of the output signals of the PWM generator may additionally be modified as a function of the output signal of the temperature sensor. |
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