Tong chi advantage in production of cooling fans what?
( 1) Low loss, high efficiency, because the permanent magnet excitation, eliminate the loss of induction motor excitation current; At the same time, permanent magnet brushless dc motor work in synchronous operation mode, eliminates the switch frequency of induction motor rotor core loss. These two aspects makes the running efficiency of the permanent magnet brushless dc motor is far higher than that of induction motor, small capacity motor efficiency is more obvious.
( 2) High power factor: as a result of the brushless dc motor excitation magnetic field does not need power grid reactive current, so the power factor is far higher than that of induction motor, brushless dc motor can be run on 1 power factor, it is highly advantageous to small power motor. Brushless motor and induction motor has higher efficiency when compared with not only the rated load and power factor, and has more advantages in light load.
( 3) Speed control performance is good, control is simple: compared to the induction motor variable frequency speed regulation, brushless dc motor speed regulation control is not only simple, but also has better performance of speed adjustment.
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