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In this paper, 3-level Active NPC inverter of predictive thermal modeling controls losses through the predictive thermal modeling. In the advantage of conventional 3-Level NPC, the generated thermal in each switch is unbalanced. Also, utilization of designed system has decreased. Thus, in order to compensate, 3-Level Active NPC inverter can distribute switch loss in accordance with operation of active...
The purpose of this paper is to discuss a current prediction algorithm for sensorless model control dc-dc converter. In the proposed method, the sensing resistor for the current detection is eliminated by predicting the output current. The output current is predicted from the equation of the relationship between the output and input voltage in the static state using the duty ratio and the output voltage...
This paper proposes Z-source with voltage multiplication inverter for grid connected Photovoltaic (PV) application. The proposed scheme has two-stage. The first stage consists of Z-source with voltage multiplication converter. The proposed converter has high gain compared to other transformer less topologies and reduced voltage stress on the switch. The second stage assembled from five switch inverter...
Recently, Model Predictive Controller (MPC) becomes the most attractive control in power electronics and drives applications. It is incorporated in Z-Source Inverter family (ZSI) where each of capacitor voltage, inductor current and output load currents could be controlled at their setting points' values. In this paper, a proposed algorithm for qSZI is introduced to simplify the system through reducing...
This paper proposes a modified 4-phase interleaved converter for the FC power source for mobile based station applications. The ripple and harmonic content of the FC current is one of the various phenomena influencing FC lifetime. The main objective of this research is to minimize inductor size, capacitor, current/voltage ripples, and harmonic content. The main contribution is to presents a control...
Renewable energy system such as a photovoltaic, a wind turbine generation and fuel cell has attracted attention as alternative energy sources of fossil fuel. However, a distributed generating system with the photovoltaic or the wind turbine generation is difficult to obtain a constant power supply. Thus control of power leveling system is required to maintain the balance of power flow for irregular...
To take advantage of volatile renewable energy, implementation of digital control is effective since it supports the application of various advanced control theory and communication functions. However, it is usually difficult to use the actual plant to be controlled at the control software development stage, particularly in terms of cost and safety. Therefore, during the control software development...
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