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This paper suggests a new multi-phase dc-dc converter that benefits from modularity, simple control and structure, extra gain, continuous input current and low normalized voltage stress on switches/diodes. The suggested configuration can track the maximum power point in PV applications. The suggested configuration produces larger gains per device count, in comparison with other topologies. After introduction of suggested configuration, its operational modes have been explained. Then, its effectiveness has been verified by comparison and simulation results.

In this paper, a modified single-phase Multi-Level Inverter (MLI) is proposed that produces more steps per device count, which reduces less total expense, volume, weight and losses. The low Normalized Blocking Voltage (NBV) on switches is another advantage that results in reduced expense, volume and losses of switches and consequently higher efficiencies. Due to increased steps, the suggested configuration has low Total Harmonic Distortion (THD) and consequently high power quality. The proposed 49-level topology has been introduced, explained and compared with recently presented novel MLIs. For performance verification, the PSCAD/EMTDC has been used as simulation software. Comparison and simulation results approve the suitability of suggested configuration.

This paper suggests a novel dc-dc topology that produces extra high gains in mild duty cycles. The main profits of suggested topology are: simple control and structure, continuous input/output currents and low standing voltage of power switches/diodes. In this paper, the new structure is introduced and its operating principles and analysis are given. Then, the suggested configuration is compared with similar novel structures. Also, the proposed topology has been simulated in PSCAD/EMTDC software. The presented comparison and simulation results verify satisfactory operation of suggested converter.

This paper proposes a new topology for cascaded 35-level inverters. Higher number of produced levels (35 levels in this paper) improves the quality of output voltage and reduces its Total Harmonic Distortion (THD). For producing 35 levels, the suggested configuration employs less switches than similar structures. This means that the share of each switch in suggested configuration on generating voltage steps is more than that of similar structures. Reduction in switch count leads to reduced driver circuits and finally reduces the complexity, volume, weight and expense of suggested configuration. The fundamental frequency strategy has been applied for switching of proposed topology. The suggested configuration can be employed on supplying low/medium power factor (R-L) loads. The simulation results approve correct operation of suggested configuration.

In this paper, a new 31-level Developed H-Bridge based Sub-Multilevel Cell (DHBSMC) is proposed that can be extended to create more steps. The suggested configuration has large number of steps per device count. The suggested DHBSMC has simple structure and can be well applied for any load type (resistive, inductive or resistive-inductive). The amplitude of DC supplies can be chosen freely. In this paper, 3 methodologies are suggested for deciding about amplitude of power supplies. The generalized multi-level topology, which is the expanded version of suggested DHBSMC, is introduced. The suggested DHBSMC is contrasted with similar topologies and simulated in PSCAD/EMTDC. The results verify appropriate performance of suggested configuration.