MOTOR CONTROL DEVICE
First Claim
1. A motor control device adapted for controlling rotation of a brushless DC motor of a ceiling fan, comprising:
- a receiver unit that receives an input signal and outputs a command signal in accordance with the input signal;
a magnetic sensor unit adapted for detecting a magnetic pole variation of the brushless DC motor so as to generate a position signal;
a processing unit that is electrically connected to said receiver unit and said magnetic sensor unit, and that generates a control signal in accordance with the command and position signals;
a motor drive unit that is electrically connected to said processing unit and the brushless DC motor, and that generates a drive signal for driving the brushless DC motor in accordance with the control signal;
an AC to DC converter unit includinga rectifier that receives and rectifies a grid power, and generates a rectified power from the grid power, anda filter that is electrically connected to said rectifier and said motor drive unit, and that filters the rectified power to generate a first DC power for supply to said motor drive unit; and
a DC to DC converter unit that is electrically connected to said receiver unit, said magnetic sensor unit, said processing unit, said motor drive unit, and said AC to DC converter unit, and that steps down the first DC power to generate a second DC power for supply to said receiver unit, said magnetic sensor unit, said processing unit, and said motor drive unit;
wherein said AC to DC converter unit does not include a transformer.
1 Assignment
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Accused Products
Abstract
A motor control device for controlling rotation of a brushless DC motor of a ceiling fan includes a receiver unit that receives an input signal and outputs a command signal, a magnetic sensor unit for detecting a magnetic pole variation of the brushless DC motor so as to generate a position signal, a processing unit that is electrically connected to the receiver unit and the magnetic sensor unit and that generates a control signal, a motor drive unit that is electrically connected to the processing unit and the brushless DC motor and that generates a drive signal for driving the brushless DC motor, an AC to DC converter unit that rectifies and filters a grid power to generate a first DC power for the motor drive unit, and a DC to DC converter unit that is electrically connected to the aforementioned units and that generates a second DC power.
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Citations
9 Claims
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1. A motor control device adapted for controlling rotation of a brushless DC motor of a ceiling fan, comprising:
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a receiver unit that receives an input signal and outputs a command signal in accordance with the input signal; a magnetic sensor unit adapted for detecting a magnetic pole variation of the brushless DC motor so as to generate a position signal; a processing unit that is electrically connected to said receiver unit and said magnetic sensor unit, and that generates a control signal in accordance with the command and position signals; a motor drive unit that is electrically connected to said processing unit and the brushless DC motor, and that generates a drive signal for driving the brushless DC motor in accordance with the control signal; an AC to DC converter unit including a rectifier that receives and rectifies a grid power, and generates a rectified power from the grid power, and a filter that is electrically connected to said rectifier and said motor drive unit, and that filters the rectified power to generate a first DC power for supply to said motor drive unit; and a DC to DC converter unit that is electrically connected to said receiver unit, said magnetic sensor unit, said processing unit, said motor drive unit, and said AC to DC converter unit, and that steps down the first DC power to generate a second DC power for supply to said receiver unit, said magnetic sensor unit, said processing unit, and said motor drive unit; wherein said AC to DC converter unit does not include a transformer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification