Derivation of new double-input DC-DC converters using the building block methodology

In most power electronic systems, the instantaneous input and output power vary by time and are not exactly identical with each other. Hence, providing a good match between them is a complicated task to deal with if not impossible. Furthermore, due to the wide variation range of the processed power, the overall efficiency of the system is not high. The solution is to hybridize the system using an energy storage unit like in hybrid electric vehicles, power factor correction systems, and photovoltaic systems. Multi-input converters play a key role in such hybridized systems, where it is required to have more than one power source...In this thesis, a systematic approach to derive several new double-input converters using H-bridge cells or single-pole triple-throw switches as building blocks is proposed. Different operating modes and the switch realization of the new converters are obtained and their corresponding voltage ratios are derived. Bidirectional power flow is also considered. All of the proposed converters consist of only one inductor; hence, the number of passive elements that are required is reduced. The operating characteristics of the new converters are verified using simulation results --Abstract, page iii

Synthesis of Double-Input DC-DC Converters using a Single-Pole Triple-Throw Switch as a Building Block

Hybridizing power electronic systems using an energy storage unit has gained popularity in transportation and power system applications. This task has traditionally been performed by using several independent power electronic converters. Multi-input converters, due to their reduced part count and improved efficiency, seem to be an advantageous option to replace the conventional converters. A few multi-input converter topologies have been reported in the literature; however, there is not a systematic approach to derive them. Furthermore, all possible topologies are not completely explored and it is difficult to derive new converters from the existing topologies. Hence, in this paper, a systematic approach to derive multi-input converters by using single-pole triple-throw switches as building blocks is presented

Derivation of New Double-Input DC-DC Converters Using H-Bridge Cells As Building Blocks

In most power electronic systems, the instantaneous input and output power vary by time and are not exactly identical with each other. Hence, providing a good match between them is a complicated task to deal with if not impossible. Furthermore, due to the wide variation range of the processed power, the overall efficiency of the system is not high. The solution is to hybridize the system using an energy storage unit like in hybrid electric vehicles, power factor correction systems, and photovoltaic systems. Multiinput converters play a key role in such hybridized systems, where it is required to have more than one power source. Utilizing multiinput converters is preferred to using several independent converters (multiple converters) from efficiency, components count and size, cost, and performance points of view. Several types of multi-input converters have been proposed in the literature. However, there haven\u27t been many systematic approaches to derive multi-input converter topologies. In this paper, several new double-input converters are proposed using H-bridge cells as building blocks. Different operating modes and the switch realization of the new converters are obtained and their corresponding voltage ratios are derived. All of the proposed converters in this paper consist of only one inductor; hence, the number of passive elements that are required is reduced. The operating characteristics of the new converters are verified using simulation and experimental results

Double-Input DCDC Power Electronic Converters for Electric-Drive Vehicles - Topology Exploration and Synthesis Using a Single-Pole Triple-Throw Switch

Hybridizing energy systems using storage devices has gained popularity in transportation and distributed electric power generation applications. Traditionally, several independent power electronic converters (PECs) were utilized in such practices. Due to their reduced part count, double-input (DI) PECs prove to be a promising choice in hybridizing energy systems. A few topologies for multi-input converters have been reported in the literature; however, there is no systematic approach to synthesize them. Furthermore, all possible topologies are not completely explored, and it is difficult to derive new converters from existing topologies. Therefore, in this paper, a systematic approach to derive DI converters by using a single-pole triple-throw switch as a building block is presented