Fan motor control unit
AssigneeSanyo Denki Co., Ltd.
InventorsYo Muramatsu, Takahisa Toda, Kenta Nishimaki
Life of this patent
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Abstract
A fan motor control unit includes sensor units that each detect a rotational position of the fan motor, a switching unit that selectively connects each of stator coils of the fan motor to a rectifier circuit, a current sensor that detects a current flowing in the fan motor, and a switching control unit that advances, in the case where the current detected by the current sensor exceeds a threshold, a energization timing from the rectifier circuit to the stator coils with respect to the energization timing applied while the current detected by the current sensor is lower than the threshold, on the basis of the rotational position detected by the sensor units.
Claims9
-8. (canceled)
A fan motor control unit comprising:
- a rotational position detection sensor that detects a rotational position of the fan motor;
- a switching unit that selectively connects each of coils of the fan motor to a power source;
- a current sensor that detects a current flowing in the fan motor;
- and
- a switching control unit that advances, in the case where the current detected by the current sensor exceeds a threshold, a energization timing from the power source to the coils with respect to the energization timing applied While the current detected by the current sensor is lower than the threshold, on the basis of the rotational position detected by the rotational position detection sensor.
Dependencies are inferred from the claim text.