Analysis of Interleaving Effect for Toroidal Type Transformer Windings

Abstract

An analysis of the interleaving effect for the secondary winding distribution of a toroidal transformer is presented in this paper. The equations to calculate the leakage inductance of the toroidal transformer are derived using MMF diagrams for the different secondary winding distributions. The simulation and experimental results are provided to show the validity of the theoretical calculation.

Noise-Robust Online Measurement of the On-State Resistance of the Power Semiconductor Devices in PWM Converters

“…In (5), vD1 is the forward voltage drop of D1 that makes the relationship between vsen and vds nonlinear. Assuming the sensing gain of ids is unity or out ds i i = , RDUT is expressed in terms of vsen as in (6).…”

“…The RUL of the power semiconductor devices is generally represented by their on-state resistances RDUT, because the bond wires inside the package are gradually lifted off or cracked as they age [6]- [14]. One of the simplest ways to measure RDUT is to use a multimeter or milli-ohm meter which is widely utilized to measure resistances.…”