1. What Is Motor-CAD Output Power Calculation?

Motor-CAD software calculates the output power of electric motors using the fundamental relationship between torque and rotational speed. This calculation is essential for motor design, performance analysis, and FEA simulation validation.

2. How Does The Calculator Work?

The calculator uses the output power formula:

Where:

• \( P_{out} \) — Output power in watts (W)
• \( Torque \) — Motor torque in newton-meters (N·m)
• \( Speed \) — Rotational speed in radians per second (rad/s)

Explanation: This formula represents the mechanical power output of the motor, which is the product of the torque produced and the angular velocity at which the motor shaft rotates.

3. Importance Of Output Power Calculation

Details: Accurate output power calculation is crucial for motor sizing, efficiency analysis, thermal management, and ensuring the motor meets application requirements in FEA simulations and real-world applications.

4. Using The Calculator

Tips: Enter torque in N·m and speed in rad/s. Both values must be positive numbers. The calculator will compute the output power in watts.

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between input and output power?
A: Input power is electrical power supplied to the motor, while output power is mechanical power delivered by the motor shaft. Efficiency is the ratio of output to input power.

Q2: How does Motor-CAD use this calculation?
A: Motor-CAD integrates this fundamental calculation with electromagnetic, thermal, and mechanical analyses to provide comprehensive motor performance predictions.

Q3: Can I use different units for torque and speed?
A: Yes, but ensure unit consistency. Common alternatives include lb-ft for torque and RPM for speed, with appropriate conversion factors.

Q4: Why is angular speed in rad/s preferred?
A: Rad/s is the SI unit for angular velocity and provides direct compatibility with torque in N·m for power calculation in watts.

Q5: How accurate is this calculation for motor design?
A: This provides the theoretical maximum output power. Actual performance may vary due to losses, thermal limitations, and other practical factors considered in FEA simulations.