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This paper evaluates three PWM digital control approaches to achieve the current sharing between phases in high power dual interleaved DC-DC converters. The implementation of a digital peak current, multi-sample averaged current and an enhanced single-sample averaged current control in a TMS320F28377D is described. Experimental results from a 60 kW, 75 kHz silicon carbide DC-DC converter are used...
A DC-DC converter topology is presented combining the soft switching effects of the Snubber Assisted Zero Voltage and Zero Current Transition (SAZZ) topology and the increased inductor frequency of the dual interleaved boost converter with interphase transformer. The snubber capacitors and output capacitances of the main devices are discharged prior to turn on using a single auxiliary inductor, eliminating...
This paper shows the performance evaluation and practical demonstration of a high-power bi-directional DC-DC converter with a power density of 20 kW/l, using 1200V/100A SiC MOSFET modules from CREE. The converter is based on a dual-interleaved topology with hard-switching operating at 75 kHz. To increase the power density, water-cooled magnetic components are used. The experimental results of a 60...
A dual-interleaved boost converter is presented with zero-voltage switching for applications in electric vehicle power trains. The topology has one input inductor and an interphase transformer (IPT) between the two channels. By using an appropriate differential inductance value for the IPT, the converter achieves transitions with zero-voltage switching in the devices. The circuit operation is described...
A step-up converter is described to interface the low, poorly regulated fuel cell output voltage (70-120 V) with the higher voltage supercapacitor bank and traction drive system on a small fuel cell powered electric vehicle. The paper focuses on the design of an interleaved boost converter, in particular comparing a two inductor circuit with an alternative topology comprising a single inductor plus...
A step-up converter is described to interface the low, poorly regulated fuel cell output voltage (70-120 V) with the higher voltage supercapacitor bank and traction drive system on a small fuel cell powered electric vehicle. The paper focuses on the design of an interleaved boost converter, in particular comparing a two inductor circuit with an alternative topology comprising a single inductor plus...
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