1. What is the Torque Equation?

The torque equation (T = Kt × I) calculates the torque output of a BLDC motor based on its torque constant (Kt) and the current (I) flowing through it. This fundamental relationship helps in motor selection and performance analysis.

2. How Does the Calculator Work?

The calculator uses the torque equation:

Where:

• \( Kt \) — Torque constant (Nm/A)
• \( I \) — Current (amperes)

Explanation: The torque constant (Kt) represents how much torque the motor produces per ampere of current. Higher Kt values mean more torque per amp.

3. Importance of Torque Calculation

Details: Accurate torque calculation is essential for determining if a motor can handle the mechanical load, selecting appropriate motor controllers, and ensuring efficient system operation.

4. Using the Calculator

Tips: Enter the motor's torque constant (typically found in datasheets) and the operating current. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical Kt value for BLDC motors?
A: Kt values vary widely but typically range from 0.01 Nm/A for small motors to several Nm/A for large industrial motors.

Q2: How does torque relate to motor power?
A: Power (W) = Torque (Nm) × Angular Velocity (rad/s). Higher torque at a given speed means more power.

Q3: Does this equation work for all motor types?
A: This specific form is most accurate for BLDC motors. Other motor types may have different relationships.

Q4: What affects the torque constant Kt?
A: Kt depends on motor design factors like number of windings, magnetic flux, and rotor geometry.

Q5: How does temperature affect torque output?
A: Higher temperatures can reduce torque due to increased resistance and potential magnet weakening in some motors.