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In this paper, the design and implementation of a 3 kW, three-phase, two-channel interleaved Vienna-type rectifier with greater than 99% efficiency is presented. The operating principle of the interleaved Vienna-type rectifier is introduced, with particular attention paid to the switching-frequency circulating current generated by the interleaved operation, as well as effective mitigation methods...
This paper presents two discontinuous pulse width modulation (DPWM) methods for three phase Vienna rectifiers with different performance optimization targets. One for switching loss minimization and one for switching loss reduction with the neutral point voltage controllability. Due to the current commutation characteristics if Vienna rectifiers, the available space voltage vectors are limited. With...
In this paper, a comprehensive efficiency evaluation of several single-phase bridgeless Power Factor Correction (PFC) boost rectifier topologies is conducted. Both two-level and three-level bridgeless PFC boost rectifier topologies are considered; including paralleled and interleaved variants of each. To improve efficiency, a three-level bridgeless PFC boost rectifier with an AC switch is proposed...
Based on the theory of band engineering, we realize a directional switch for EM wave. Unidirectional waveguide made with magnetooptical PC is integrated into the circuit. This makes the device compact and highly efficient. Moreover, the direction of energy flow can be controlled remotely by an external magnetic field.
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