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3 Phase Power Formula:
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The 3 Phase BLDC Motor Power Calculation determines the electrical power consumption of a three-phase brushless DC motor using voltage, current, and power factor measurements. This calculation is essential for motor sizing, efficiency analysis, and electrical system design.
The calculator uses the 3-phase power formula:
Where:
Explanation: The formula calculates the real power consumed by a balanced three-phase system, accounting for the phase relationship between voltage and current through the power factor.
Details: Accurate power calculation is crucial for proper motor selection, energy efficiency assessment, circuit protection design, and determining electrical load requirements in industrial and commercial applications.
Tips: Enter line-to-line voltage in volts, current in amperes, and power factor (typically 0.7-0.95 for BLDC motors). All values must be positive numbers with voltage and current greater than zero.
Q1: Why is the √3 factor used in 3-phase calculations?
A: The √3 factor accounts for the phase difference in three-phase systems, converting between line and phase quantities in balanced systems.
Q2: What is a typical power factor for BLDC motors?
A: BLDC motors typically have power factors ranging from 0.7 to 0.95, depending on motor design, load conditions, and control method.
Q3: Is this formula applicable to all 3-phase motors?
A: Yes, this formula applies to all balanced three-phase AC and BLDC motors when calculating real power consumption.
Q4: How does power factor affect motor performance?
A: Higher power factor indicates better electrical efficiency and reduced reactive power, leading to lower energy costs and improved system capacity.
Q5: Can I use this for single-phase motor calculations?
A: No, single-phase motors use P = V × I × PF without the √3 factor. This calculator is specifically for three-phase systems.