Inductor Power Loss Calculator, Formula, Inductor Power Loss Calculation

Inductor Power Loss Calculator:

Enter the values of core power loss, P_c(W), dc resistance power loss, P_dc(W) and ac resistance power loss, P_ac(W) to determine the value of Inductor power loss, P_L(W).

Inductor Power Loss Formula:

Inductor power (PiL) in electrical circuits refers to the total power dissipation within an inductor, which is an essential component in circuits where energy storage in a magnetic field is involved.

Core power loss depends on the core material and operating frequency. Certain core materials minimize these losses.

The DC resistance of the inductor wire contributes to a continuous power loss regardless of the frequency.

AC resistance, at higher frequencies, the skin effect and proximity effect cause current to concentrate on the surface of the conductor, increasing its effective resistance and leading to additional power loss.

Electrical current flowing through the inductor creates a magnetic field. Ideally, all the input power (PiL) would be stored as magnetic field energy. However, due to core losses (Pcore), DC resistance (Pdcr), and AC resistance (Pacr), some power is dissipated as heat within the inductor.

Inductor power loss, P_L(W) in watts is calculated by the sum of core power loss, P_c(W) in watts, dc resistance power loss, P_dc(W) in watts and ac resistance power loss, P_ac(W) in watts.

Inductor power loss, P_L(W) = P_c(W) + P_dc(W) + P_ac(W)

P_L(W) = inductor power loss in watts, W.

P_c(W) = core power loss in watts, W.

P_dc(W) = dc resistance power loss in watts, W.

P_ac(W) = ac resistance power loss in watts, W.

Inductor Power Loss Calculation:

1. Calculating Total Inductor Power:

Given:                             

Core Losses P_c(W) = 2 Watts

DC Resistance Losses P_dc(W) = 1 Watt

AC Resistance Losses P_ac(W) = 0.5 Watts

Inductor power loss, P_L(W) = P_c(W) + P_dc(W) + P_ac(W)

P_L(W) = 2 + 1 + 0.5

P_L(W) = 3.5W.

2. Finding DC Resistance Losses (Pdcr) Given Total Inductor Power

Given:

Total Inductor Power P_L(W) = 6 Watts

Core Losses P_c(W) = 3 Watts

AC Resistance Losses P_ac(W)= 2 Watts

Inductor power loss, P_L(W) = P_c(W) + P_dc(W) + P_ac(W)

6 = 3 + P_dc(W) + 2

6 = 5 + P_dc(W)

P_dc(W) = 1W.

Power Loss in Pure Inductor is zero: