BLDC Motor Power Calculator

BLDC Motor Power Formula Explained

The formula for calculating the power of a BLDC motor is given by:

\[ \text{BLDC} = [Kv \cdot (I - Io)] \cdot \left[\frac{30}{\pi \cdot Kv} \cdot (I - Io) \right] \]

where:

• \(\text{BLDC}\) is the brushless motor power in watts,
• \(Kv\) is the RPM per volt (the motor's speed constant),
• \(I\) is the current at full load in amps,
• \(Io\) is the current at no load in amps.

How to Use the Calculator

1. Input the RPM/Volt (Kv): This is a measure of the motor's speed constant, indicating how many revolutions per minute the motor will make per volt of electricity without load.
2. Input the Current at Load (I): Enter the current in amps when the motor is under full load.
3. Input the No Load Current (Io): This is the current in amps when the motor is running without any load.
4. Calculate: Press the calculate button to determine the BLDC motor power.
5. Reset: If you need to perform another calculation, use the reset button to clear all fields.

Understanding the power output of a BLDC motor is crucial for selecting the right motor for your application, ensuring it meets the required performance without being over or underpowered. This calculator makes it easy to evaluate potential motors based on your specific requirements.