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This paper presents a new asymmetrical single-phase multilevel inverter topology capable of producing nine-level output voltage with reduce device counts. In order to obtain the desired output voltage, dc sources are connected in all the combination of addition and subtraction through different switches. Proposed topology results in reduction of dc source, switch counts, losses, cost and size of the...
Especially due to the ever-increasing complexity of automated production systems, model-based systems engineering (MBSE) is gaining more and more importance. Nevertheless, system models do not stand for themselves — rather, they are related to a multitude of engineering documents such as requirements specification documents, CAD drawings or electric circuit diagrams. Especially for practical applications,...
Real-time simulation of an electrical vehicle (EV) with hardware-in-the-loop is a cost-effective approach in evaluating the behavior of electrical vehicles and its controllers before applying them in a real system. This paper demonstrates a nonlinear approach of a real-time induction motor model implemented in a National Instrument real-time platform. Many studies have been conducted concerning on...
An input switch based modular Single Ended Primary Inductor (SEPIC) three phase AC-DC converter is proposed in this paper. The proposed rectifier has the advantage of step-up/down voltage gain with boost input stage. Input boost stage allows input current shaping accompanied by power factor correction. The topology will also provide possible capacitive isolation of input/output sides of the converter...
The US Navy is pursuing development of all-electric warships. The future all-electric warship is expected to utilize medium-voltage DC (MVDC) main distribution to supply several load zones. The load zones will convert the MVDC power to lower voltage for use by local loads as well as contain local energy storage for casualty back-up power. A majority, if not totality of loads are expected to exhibit...
This paper presents a review on double-diode explicit expressions for current-voltage (I-V) characteristics of photovoltaic (PV) cells. The significance of PV cell modeling is discussed and the shortcomings of the conventional implicit models are examined. The explicit models are favorable for real time operation during designing and debugging process for efficiency enhancement of PV systems. This...
The impedance source inverter family has become one of the most interesting alternatives for wind and photo-voltaic energies applications which require high conversion ratio. The main drawback of these inverters is related to the modulation signal which must be used to control the output current and voltage conversion ratio simultaneously. To deal with this problem several modulation techniques and...
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