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This contribution deals with the design of a water-cooled on-board charger for electric vehicles. The charger consists of two power stages: a bridgeless power factor correction boost rectifier and an isolating resonant converter. Though wide-bandgap semiconductors with excellent reverse recovery behavior exist, the comparably high cost still advices the use of traditional silicon semiconductors. However,...
The differential mode and common mode inductance of two windings located on a magnetic material of toroidal shape are investigated. The field problem is solved by the method of separation and the use of Fourier approximation for fitting the solutions to the boundary conditions. The solution is discussed by means of numerical evaluation for different parameters like magnetic material, width of the...
Objective functions and constraints for electric losses and component volume are derived to gain an optimal design of a line filter for grid rectifiers with power factor correction (PFC). The gained characteristics described by these models are valid for coupled inductors with toroidal cores and conventional capacitors. A modified noise predicting technique for a Totem-Pole rectifier is then used...
This paper presents a current control method for totem-pole PFC-rectifiers which avoids the need for expensive sensing circuits. The design makes use of only one switch current as current feedback signal. The control method is based on a detection algorithm for conduction mode detection in mixed conduction mode (MCM) operation. Using a DSP the mode detection is calculated on-line and based on the...
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