Enter the core power loss (watts), the dc resistance power loss (watts), and the ac resistance power loss (watts) into the calculator to determine the Inductor Power Loss. 

Inductor Power Loss Formula

The following formula is used to calculate the Inductor Power Loss.

PiL = Pcore + Pdcr + Pacr

  • Where PiL is the Inductor Power Loss (watts)
  • Pcore is the core power loss (watts) 
  • Pdcr is the dc resistance power loss (watts) 
  • Pacr is the ac resistance power loss (watts) 

How to Calculate Inductor Power Loss?

The following example problems outline how to calculate Inductor Power Loss.

Example Problem #1

  1. First, determine the core power loss (watts). In this example, the core power loss (watts) is determined to be 10 .
  2. Next, determine the dc resistance power loss (watts). For this problem, the dc resistance power loss (watts) is measured to be 98 .
  3. Next, determine the ac resistance power loss (watts). In this case, the ac resistance power loss (watts) is found to be 745.
  4. Finally, calculate the Inductor Power Loss using the formula above: 

PiL = Pcore + Pdcr + Pacr

Inserting the values from above and solving yields: 

PiL = 10 +98+745 = 853 (watts)

Example Problem #2

Using the same method as above, determine the variables required by the formula. For this example problem, these are:

core power loss (watts) = 47

dc resistance power loss (watts) = 4

ac resistance power loss (watts) = 3

Enter these given values into the calculator or above yields: 

PiL = 47 + 4 + 3 = 54 (watts)