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Differential mode Three-phase Micro inverter DTMI has many features in low voltage application such as module integrated PV architectures. It has the ability to increase the PV module voltage using single stage with low components count. Differential inverter is implemented using three DC-DC converters with their input terminals connected in parallel and their outputs terminals connected differentially...
In this paper, a novel three phase modular multi-level inverter (MMLI) is proposed. The proposed inverter consists of primary cell and repetitive modular cells which are connected in series arrangement with the primary cell. Therefore, the proposed topology is able to get more output voltages levels number by adding extra modular cells. Both the sinusoidal pulse width modulation (SPWM) and staircases...
This paper proposes a new design and implementation of a single stage three-phase multi-level inverter (MLI). The suggested inverter is modular type and can be generalized by connecting the basic modular cells in series configuration. In addition, it can be operated with symmetrical/asymmetrical Dc-voltage sources. The proposed MLI is successfully modulated using sinusoidal pulse width modulation...
This paper presents a novel three-phase Multi-Level Inverter (MLI). The proposed inverter operates with symmetrical DC power sources and low frequency modulation technique as well. The main contribution of the proposed topology is the total number of the active power switches used to generate the same number of levels compared to the previous topology is reduced by 25 %. Therefore, it is expected...
Model Predictive Control (MPC) becomes more prevalent in power converters due to its faster response in tracking the reference values of the controlled variables. In this paper, the MPC is applied on the Switched-Inductor quasi Z-Source Inverter (SL-qZSI) topology. The MPC modeling for the capacitor voltage, inductor current, and output load current of the topology are designed to predict their values...
PV systems have the drawbacks of high initial cost. The power electronics portions represents about 50% of this cost for no-battery systems. Therefore, it is important to act to decrease this cost through designing a power conditioning circuit with lower cost. This paper proposes implementation of economic and efficient multilevel inverter for PV applications. Packed U Cell (PUC) multilevel inverter...
Converter efficiency is vital point in PoE system, as the PSE provided power is limited by IEEE 802.3af/at standard. Besides, the existent power loss through the Ethernet wires and PD interface added another level on the requirement to enhance the solution efficiency. This paper proposes a new topology that meets the IEEE 802.3af/at-compliant powered device (PD) solution for Power over Ethernet (PoE)...
This paper presents an experimental verification of the Improved Switched Inductor Z-Source Inverter (ISL-ZSI). The ISL-ZSI has been proposed to overcome the limitations of classical Z-Source Inverter (ZSI) such as lower voltage gain, higher capacitor voltage stress of Z-network and huge inrush current that appears in the case of traditional ZSI. In this paper, different aspects will be presented...
Recently, great attention has been addressed for multilevel inverters, as they exhibit low total harmonic distortion in the output voltage and low electromagnetic interference. In this paper a new configuration of three-phase multilevel voltage source inverter is presented. This structure consists of series-connected sub-multilevel inverters blocks. The number of utilized switches, insulated gate...
This paper presents an experimental work on improved SL Z-source inverter topology. Because of the limitations of classical Z-source inverter, the SL Z-source inverter has been proposed to increase the voltage gain and to reduce the voltage stress on the capacitors of the Z-network. The simulation and experimental results show that the improved SL Z-source inverter increases the boost factor, improves...
This paper presents new simple control techniques for single-phase five-level Pulse Width Modulation (PWM) inverter. The proposed control technique requires only driving two high frequency switches with maintain other switches at line frequency. Operational principles with switching functions are analyzed for the two techniques. A comparison between the two proposed techniques has been done based...
This paper proposes a high gain and high efficiency power conditioning system for grid connected PV module. The system consists of a one module of PV, boost converter with high gain transformation ratio, and singlephase H-bridge inverter. The system is suitable for using less number of PV modules or using only one PV module for the grid connection applications which called ac modules. Since the controller...
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