By Daher S.
Faraway from the hurry of the massive cities,in tropical jungles and in arid regions,in remoted coasts and mountains,or the place else the sunshine of bulb is rare,millions of individuals nonetheless wait forthe merits of the electricity.Stand-alone renewable power systemsmake it attainable to provide power to those regions;this paintings is a contribution to the belief ofsystems of excessive functionality and reliability.
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Additional info for Analysis, Design and Implementation of a High Efficiency Multilevel Converter for Renewable Energy Systems
Topology Fig. 10 Y Y Y Y "Y": Yes, available. "-": Not available. 2, only 3 topologies attend all mandatory characteristics. While multiple transformer and multi-winding transformer topologies attend all characteristics, the H-bridge topology with multi-winding transformer does not support full 4-quadrant operation. 2). It is also important to mention that the design of the H-bridge and multiple-transformer topologies may include subtraction of voltages. Both designs were considered for the multiple-transformer topology but only Analysis, design and implementation of a high efficiency multilevel converter 20 addition of levels was considered for the H-bridge (because it is not bi-directional, what could result in capacitors oversize).
This difference can be justified by the fact that inverter-1 is based on low-frequency switching and inverter-2 is based on high-frequency. 8. 8 - Monthly energy loss versus processed energy. 8, inverter-2 presents lower losses for any energy demand of up to approximately 270 kWh/month (average: 375 W), and above this value inverter-1 is more efficient. 9. 963). 9, it is found that both inverters present same energy losses at about 270 kWh/month, and the inverter with lower no-load consumption will present lower losses for energy demand lower than this value.
I os ´ I m + I os Vp Before the measurement instant. I os Im LOAD Vp LOAD At the measurement instant. 9 - Proposed process to measure the transformer magnetizing current. 9, the transformer is disconnected from the load at the measurement instant, while another path for the load current is guarantied by the outputstage odd switches, what is particularly important in the case of inductive loads. It also should be noted that the adopted measurement method does not disturbs the normal operation of the converter, since measurements happen near the end of each half-cycle, where the output voltage naturally should assume the zero value.
Analysis, Design and Implementation of a High Efficiency Multilevel Converter for Renewable Energy Systems by Daher S.