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AssigneeSamsung Electronics Co., Ltd.
InventorsKwang Oh, Koji Hamaoka, Han Yoo, Pyeong Park, Hun Bae, Yun Kim, Jeong Seo
Estimating the term…
A Brushless Direct Current (BLDC) motor starting method and device are provided, in which startup noise and vibration and startup failure rate can be reduced using a constant low-speed startup scheme when the BLDC motor is in sensorless startup mode, and PWM duty is also maintained at low level when the BLDC motor starts up, thereby preventing an excessive current from occurring due to desynchronization of the motor at startup, so that it is possible to optimize specifications of an inverter in the BLDC motor. The BLDC motor starts up with a startup speed and a PWM duty of a rotor of the BLDC motor being kept constant, and the BLDC motor switches to sensorless mode if a position of the rotor is detected a predetermined number of times or more during a specific time.
A method for starting a Brushless Direct Current (BLDC) motor, the method comprising operating the BLDC motor in a start mode in which a startup speed and a Pulse Width Modulation (PWM) duty of a rotor of the BLDC motor are maintained at constant levels.
A method for starting a Brushless Direct Current (BLDC) motor, the method comprising, when the BLDC motor is operating in a start mode, determining whether to switch operation of the BLDC motor to a sensorless mode based on a number of times a rotor position of the BLDC motor is detected.
A method for starting a Brushless Direct Current (BLDC) motor, the method comprising:
A device for starting a Brushless Direct Current (BLDC) motor, the device comprising:
Dependencies are inferred from the claim text.