In this study, a new non-isolated high voltage gains dc/dc converter using coupled inductor and voltage multiplier techniques (diode/capacitor) is presented. The voltage gain will be increased by increasing the turns ratio (N) and the number of stages of the VM units. The proposed converter capable to more increase the output voltage gains with transfer energy which is stored in coupled inductance. Also, the voltage multiplier unit causes to further increase in the output voltage level of the proposed converter. Besides, the nominal value of the semiconductors is low due to these are clamped to the capacitors available on the voltage multiplier units. The normalized voltage stress across the semiconductors is low which this case is compared in the comparison section. Therefore, the power loss of switch can be reduced by using a switch with a lower rating (lower RDS(on)) and power diodes with the low nominal rating. As a result, the overall efficiency of the proposed converter will be high. To confirm the benefits of working in this paper, comparison results for different items with other works are provided in section 4. The principle of operation, the theoretical analysis and the experimental results of a laboratory prototype for N(N2/N1)=2 and n=2 stage in about 260W with operating at 40kHz are provided.
As the distributed generation (DG) in a power supply and the user load demand constantly change in an actual distribution network, multiobjective optimal network reconfiguration considering variations in load and DG has become a major concern, which is important and required to make system operations safe and economical. The aim is to minimize the sum of the active power loss, the sum of the load balancing index and the sum of the maximum node voltage deviation index simultaneously during the reconfiguration period. Here, this article proposes a new Chaos Disturbed Beetle Antennae Search (CDBAS) algorithm to reduce the computational time and solve the multiobjective optimal problem of network reconfiguration. To adopt the Chaos Disturbed Beetle Antennae Search algorithm for solving this multiobjective problem, grey target decision-making technology is used to rank the beetles. Additionally, to the enhance the system static voltage stability and voltage quality, a grey target decision-making model is established to achieve a layer relationship between each index and the switching operation index. The plausibility and effectiveness of the presented methodology is verified on the modified IEEE 33, 69 and 118-Bus Test Radial Distribution Network. Finally, compared with other research methods in the literature, the CDBAS algorithm outperforms other algorithms and produces a quality decision solution. INDEX TERMS Distribution system, load and distributed generation variation, multiobjective optimization, grey target decision-making, CDBAS algorithm. HAIYUN WANG received the B.E. degree in electric power systems and automation from Xin
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.