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BLDC Motor Selection Considerations

BLDC Motor Selection Considerations

  • Categories:BLDC motor
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  • Time of issue:2022-06-07
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(Summary description)The maximum torque of the BLDC motor: can be obtained by adding the load torque, the moment of inertia and the friction force, in addition, there are some additional factors that affect the maximum torque such as the resistance of the air gap air.

BLDC Motor Selection Considerations

(Summary description)The maximum torque of the BLDC motor: can be obtained by adding the load torque, the moment of inertia and the friction force, in addition, there are some additional factors that affect the maximum torque such as the resistance of the air gap air.

  • Categories:BLDC motor
  • Author:
  • Origin:
  • Time of issue:2022-06-07
  • Views:0
Information

  The main parameters that need to be referred to when selecting a BLDC motor are as follows:

BLDC motor

  The maximum torque of the BLDC motor: can be obtained by adding the load torque, the moment of inertia and the friction force, in addition, there are some additional factors that affect the maximum torque such as the resistance of the air gap air.

  Square modulus torque: It can be approximated as the continuous output torque required by practical applications, which is determined by many factors: maximum torque, load torque, moment of inertia, acceleration, deceleration, and running time.

  BLDC motor speed: This is the speed required by the application. The speed demand of the motor can be determined according to the speed trapezoidal curve of the motor. Usually, a 10% margin should be left in the calculation.

  In order to reduce the moment of inertia, the BLDC motor usually adopts a "slender" structure. The BLDC motor is much smaller in weight and volume than the brushed DC motor, and the corresponding moment of inertia can be reduced by about 40%-50%.

  The BLDC motor has good linearity of mechanical characteristics and adjustment characteristics, wide speed regulation range, long life, easy maintenance, low noise, and there is no series of problems caused by brushes, so this kind of motor is used in the control system. There is great application potential.

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