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US 2011/0298398 A1Published application
Driving system for fan and method of driving fan
AssigneeSanyo Denki Co., Ltd.
InventorsShigekazu Mitomo, Kevin Yen
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AssigneeSanyo Denki Co., Ltd.
InventorsShigekazu Mitomo, Kevin Yen
Estimating the term…
A driving system for a fan that enables an increase in motor current that may be supplied to excitation windings at the time of a maximum static pressure without increasing the rotational speed excessively when an amount of maximum air flow is provided. The fan driving system includes a drive signal generating circuit that generates drive signals, a motor driving circuit that supplies a motor current to the motor in accordance with the drive signals, a current detecting circuit (resistance) that detects the motor current, and a drive signal changing circuit. The drive signal changing circuit changes the drive signals generated by the drive signal generating circuit to restrict an increase in the motor current when the motor current becomes larger than a threshold.
A driving system for a fan that includes an impeller and a motor for rotating the impeller, and that produces a maximum static pressure when the motor rotates the impeller at a maximum speed and that produces a maximum amount of air flow when the motor rotates the impeller at a minimum speed, the driving system comprising;
A method of driving a fan that includes an impeller and a motor for rotating the impeller, and that produces a maximum static pressure when the motor rotates the impeller at a maximum speed and that produces a maximum amount of air flow when the motor rotates the impeller at a minimum speed, comprising the step of
Dependencies are inferred from the claim text.