The isolated bidirectional ac–dc converter is for the 380-V dc power distribution system to control the bidirectional power flow and to improve its power conversion efficiency. Here the high-side switches of the ac– dc rectifier employ IGBTs without anti-parallel diodes and SiC diodes. In addition, the low-side switches are consisting of two MOSFETs to reduce the conduction loss in the rectific...

Piezoelectric dc–dc converters operate between the series and parallel frequencies of piezoelectric resonator to achieve soft switching energy-balance conditions. This letter presents an experimentally validated model accurately predict operating frequency, angles, current for any six-phase converter. reduces transient simulation's calculation time reach steady state. It can be used initially s...

Joints for the ITER superconducting Central Solenoid should perform in rapidly varying magnetic field with low losses and low DC resistance. This paper describes the design of the ITER joint and presents its assembly process. Two joints were built and tested at the PTF facility at MIT Test results are presented; losses in transverse and parallel field and the DC performance are discussed. The d...

This paper presents a high-efficient, low cost inverter system suitable for solid oxide fuel cell applications. The proposed inverter provides a solution for the lowvoltage/high-current fuel cell source by using power modules that are parallel connected in the input and series connected in the output of DC-DC boost modules. The inverter topology is analyzed and outlined. A prototype is develope...

Pulmonary clearance of the encapsulated yeast Cryptococcus neoformans is associated with the CCR2-mediated accumulation of lung dendritic cells (DC) and the development of a T1 adaptive immune response. The objective of this study was to identify the circulating DC precursor(s) responsible for this large increase in lung DC numbers. An established murine model was used to evaluate putative DC p...

Linear-assisted DC/DC converters (or linearswitching hybrid DC/DC converters) consist of a voltage linear regulator (classic NPN or nMOS topologies and LDO) connected in parallel with a switching DC/DC converter. In order to control these hybrid structures, different strategies exist, allowing to fix the switching frequency as a function of some parameters of the linear regulator. This article ...

In this brief, a novel current-limiting droop controller for paralleled dc-dc boost converters loaded by constant impedance Z, current I, or power P loads in dc microgrid is proposed to guarantee closed-loop stability and sharing. Using an improved version of the recently nonlinear controller, inherent property guaranteed each converter independently load type magnitude variations. Then, suffic...