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Torque Formula:
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The BLDC (Brushless DC) motor torque equation calculates the torque output from power and RPM values. This is essential for understanding motor performance and selecting appropriate motors for specific applications.
The calculator uses the torque equation:
Where:
Explanation: The equation converts power and rotational speed into torque, which represents the rotational force produced by the motor.
Details: Accurate torque calculation is crucial for motor selection, system design, and ensuring proper performance in applications such as robotics, electric vehicles, and industrial automation.
Tips: Enter power in watts and RPM in revolutions per minute. Both values must be positive numbers greater than zero for accurate calculation.
Q1: What is the relationship between power, torque, and RPM?
A: Power is proportional to both torque and RPM. For a given power, torque decreases as RPM increases, and vice versa.
Q2: What are typical torque values for BLDC motors?
A: Torque values vary widely depending on motor size and design, ranging from small fractional Nm values for miniature motors to hundreds of Nm for large industrial motors.
Q3: How does this differ from brushed DC motor calculations?
A: The fundamental torque equation is the same for both brushed and brushless DC motors, as both convert electrical power to mechanical power.
Q4: Are there limitations to this equation?
A: This equation provides theoretical maximum torque and assumes 100% efficiency. Actual torque may be lower due to electrical and mechanical losses.
Q5: How does temperature affect torque calculation?
A: Temperature can affect motor efficiency and maximum power output, which may result in lower actual torque than calculated values at extreme temperatures.