Brushless dc motor in the south of anhui wikipedia: | how to change the motor using frequency encyclopedia of BLDC motor | the brushless dc motor in the south of anhui's website

The brushless dc motor in the south of anhui: basic motor frequency 50 hz on the market at present, 60 hz two kinds, the voltage when the rated voltage and phase at the same time, 60 hz motor can't be directly used in 50 hz power supply, because: first, the excitation current is added, will bring down the motor power factor; Second, every pole flux increase, core loss increase, excitation current is added, winding copper loss increases, both loss reduce motor efficiency, higher temperature rise; Third, the motor speed is reduced, heat dissipation becomes bad, higher temperature rise. 2. 1 if required torque is constant, then, for example, rated voltage 450 v / 60 hz motor can be directly run on 380/50 hz power supply, and if it kept the approximate constant torque of the motor, the output power shall reduce the 16. 7%. 2. 2 if you want power is kept constant, for example, rated voltage 420 v / 60 hz motor can be directly run on 380/50 hz power supply, then the output power of the motor remains unchanged. Voltage of the motor can be implemented with voltage regulator and can also be moved around the stator winding, original records during the demolition of the original winding, wire gauge, each lap number of turns, and around the root number, pitch, parallel route and so on. When using the phase voltage and the voltage at the same time, heavy in winding simple calculation as follows, are: N50 - When 50 hz conductor winding each slot number; N60 - Every 60 hz when winding conductor slot number; Conductor cross-sectional area to reduce about 10%, if the original motor slot full rate is not high, to 50 hz brushless dc machine, conductor cross-sectional area can be the same, so after changing a winding, the output power of the motor basic remain unchanged. This article by the brushless dc motor in the south of anhui anhui co. , LTD. Original, reproduced please indicate the source