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This paper presents a detailed analysis about the power losses and efficiency of multilevel dc-dc converters. The analysis considers different loss mechanisms and gives out quantitative descriptions of the power losses and useful design criteria. The analysis is based on a three-level multilevel dc-dc converter and can be extended to other(More)
The complete nucleotide sequence including precise 5′- and 3′-terminal non-coding regions (NCRs) of the attenuated lapinized Chinese strain (HCLV) of Classical Swine Fever Virus (CSFV) was determined from overlapping cDNA clones constructed by separated RT-PCR and rapid amplification of cDNA ends (RACE) methods. The genomic RNA of the HCLV strain consists(More)
This paper addresses the design of a medium voltage adjustable speed drive (ASD) utilizing the benefits of cascaded inverter technology while employing a 24-pulse rectifier inspired front end. Rectifier front ends of ASDs introduce a high level of harmonics into the utility grid, creating equipment overheating problems and distorting the voltage waveform(More)
This paper presents a diode-clamped multilevel converter topology with reduced number of clamping diodes. The novel topology uses a combination of multilevel converter cells with different number of levels. The proposed topology and its switching pattern are discussed based on a five-level converter, and it can be easily extended to N-level converter.(More)
Changes in the power density spectrum of myoelectric signal with contraction level have been reported in the literature. These changes can be induced by a number of possible factors including recruitment of differing types of units, conduction velocity changes and firing rate changes. In the paper the single unit power spectrum is investigated and the(More)
 RNA-dependent RNA polymerase (RdRp) is the replicase of positive-strand RNA viruses. Expression and characterization of the replicase are the first steps in the elucidation of the virus replication mechanism. We expressed nonstructural protein 5B (NS5B) of classical swine fever virus (CSFV) as a fusion protein with green fluorescent protein (GFP) in(More)
This work presents a new voltage balancing theory for the diode-clamped multilevel converter/inverter system. A complete analysis of the voltage balance theory based on a 5-level back-to-back converter is given. The analysis is based on fundamental frequency switching control and then extended to PWM control, which can extremely lower the harmonic(More)
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