1. What is Motor Output Power?

Motor output power is the mechanical power delivered by a motor, calculated as the product of torque and angular velocity. It represents the actual work capacity of the motor at a given operating point.

2. How Does the Calculator Work?

The calculator uses the fundamental power equation:

Where:

• \( P_{out} \) — Output power in watts (W)
• \( T \) — Torque in newton-meters (Nm)
• \( \omega \) — Angular speed in radians per second (rad/s)

Explanation: This equation shows that power increases linearly with both torque and rotational speed. For vehicle applications, this determines the motor's ability to accelerate and maintain speed.

3. Importance of Power Calculation

Details: Calculating motor output power is essential for vehicle design, performance evaluation, and energy efficiency analysis. It helps determine if a motor is appropriately sized for its intended application.

4. Using the Calculator

Tips: Enter torque in Nm and angular speed in rad/s. For RPM conversion, remember that 1 RPM = π/30 rad/s. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: How do I convert RPM to rad/s?
A: Multiply RPM by π/30 (approximately 0.10472). For example, 1000 RPM = 1000 × π/30 ≈ 104.72 rad/s.

Q2: What's typical power output for electric vehicles?
A: Passenger EVs typically range from 50-300 kW, while high-performance models may exceed 500 kW.

Q3: How does this relate to vehicle performance?
A: Higher power output generally means better acceleration and hill-climbing ability, though vehicle weight and gearing also play crucial roles.

Q4: What's the difference between input and output power?
A: Input power is electrical power consumed, while output power is mechanical power delivered. The ratio is the motor's efficiency.

Q5: Can I use this for internal combustion engines?
A: Yes, the same principle applies, though ICEs typically measure power at different RPM points due to their torque curve characteristics.