1. What is the Torque Calculation Formula?

The torque calculation formula for brushless DC motors relates power (in kW) and rotational speed (in RPM) to torque (in Nm). This is essential for motor selection and performance analysis in various applications.

2. How Does the Calculator Work?

The calculator uses the torque equation:

Where:

• \( T \) — Torque (Nm)
• \( P \) — Power (kW)
• \( N \) — Speed (RPM)
• 9550 — Conversion factor (derived from unit conversions)

Explanation: The formula shows that torque is directly proportional to power and inversely proportional to speed.

3. Importance of Torque Calculation

Details: Accurate torque calculation is crucial for motor sizing, performance evaluation, and ensuring the motor can handle the required mechanical load.

4. Using the Calculator

Tips: Enter power in kilowatts (kW) and speed in revolutions per minute (RPM). Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why is 9550 used in the formula?
A: 9550 is a conversion factor that accounts for the units (kW to W and RPM to rad/s) and simplifies the calculation.

Q2: What are typical torque values for brushless DC motors?
A: Torque varies widely based on motor size and application, ranging from fractional Nm for small motors to hundreds of Nm for large industrial motors.

Q3: How does torque relate to motor performance?
A: Torque determines the motor's ability to overcome load resistance. Higher torque means better ability to handle heavy loads at a given speed.

Q4: Can this formula be used for other motor types?
A: While similar principles apply, specific motor types may have different efficiency factors that should be considered.

Q5: How does voltage affect torque in brushless DC motors?
A: Generally, higher voltage allows for higher current, which increases torque, but motor design and controller settings also play important roles.