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Multi-port converters have fewer components count and less conversion stage than the traditional power processing solution which adopts several independent two-port converters. This paper emphasis on the use of a single power processing stage to interface multiple power inputs integrates power conversion for a hybrid power source. The classification of various multiport dc-dc converters topologies...
Now a days most of the fields such as industries, telecommunication, plug in hybrid vehicles etc, there will be different voltage level because of the auxiliary circuits in addition to main power circuit. In such system, Single Input Multiple output (SIMO) dc to dc converters have very good place and researches on SIMO dc to dc converters are worthy. Integrated Dual Output Buck Boost converter is...
This paper introduces a high gain DC-DC converter for HID lamps used in automotive applications as head lamps. A family of coupled inductor based high step-up converters is introduced and their voltage conversion ratio is derived. In the proposed topologies, a topology with minimal component count is selected and analyzed completely. Steady state analysis of the converter is studied and it is compared...
The non-conventional energy sources like photovoltaic cells and fuel cells will be at a low voltage level, this must be stepped up considerably for DC grid integration, for which we need a high voltage gain DC-DC boost converters. In this paper a multilevel boost converter (MLBC) topology is presented which consists of a simple boost converter and switched capacitor technique to provide high voltage...
This paper introduces a new single-switch nonisolated dc-dc converter with very high voltage transfer ratio and reduced semiconductor voltage stress. The converter utilizes an integrated autotransformer and a coupled inductor on the same core to achieve a high step-up voltage gain without extreme duty cycle. Further, an integrated passive regenerative circuit recycles the leakage energy of the coupled...
In photovoltaic (PV) applications, power electronic converters play a vital role in transferring power from source to load. In general, operating voltages of PV arrays are low. To interface them with high voltage DC bus, a high voltage conversion system is needed which is provided by high gain topologies. Moreover, to increase the power density, efficiency of conversion and decrease cost, recent developments...
In this paper, an integrated, reconfigurable DC-DC converter for plugin and hybrid Electric Vehicles (EV) is proposed. The converter integrates functionality for both EV powertrain and charging operation into a single unit. During charging, the proposed converter functions as a DAB converter, providing galvanic isolation. For powertrain operation, the converter functions as an interleaved boost converter...
A quasi-Z-source modular cascaded converter (qZS-MCC) for high-power photovoltaic (PV) system is proposed. The qZS-MCC comprises front-end isolated qZS half-bridge (HB) dc-dc converter submodules (SMs). The post-stage qZS-HB handles the stochastic PV voltage and power variations, also interfaces with dc collection grid at series-output side; while a unified duty cycle is applied to the front-end isolation...
With the rapid development of renewable energy systems and Microgrid, more and more DC grids of different voltage level need to be connected by the high voltage and high power DC-DC converter. The traditional topology of high voltage and high power DC-DC converter was Phase Shifted Full Bridge cascaded Modules (PSFBM). Due to the inefficiency and difficulty on manufacturing high frequency transformer...
High voltages are typically generated by voltage multipliers that consist of several multiplying stages, where each stage is composed of a few capacitors and diodes. The Half-Wave Cockcroft-Walton voltage multiplier is probably the most common multiplier. We compare different methods of capacitance distribution in the Half-Wave Cockcroft-Walton voltage multiplier and show that the output impedance...
DC-DC converters are essential in high power high voltage applications such as HVDC transmission systems. Fault tolerant capability in such applications is highly desired since the cost of shutdown can be high. This paper presents a novel isolated DC-DC converter that can achieve soft switching for all active switches. The converter has an input-parallel-output-series (IPOS) topology, which increases...
A new modular multilevel DC-DC converter with high power density and simplified localized voltage balancing control is proposed. In the proposed configuration, converter building blocks with the same power handling capability are connected in parallel in each row. Converter building block consists of an H-bridge and mutually coupled inductors whose total current is nearly ripple free. These features...
Electric power take-off systems in automotives requires the application of low voltage high current step up DC-DC converter with a high voltage gain. Researchers have evaluated enhancements for high efficiency and low cost designs. In this paper, a novel topology is proposed that has the capability of providing a high voltage gain over a wide range of output power. It also has fewer components and...
This research work addresses a comparative examination of the two basic non-isolated DC-DC converters that could be interfaced effectively for maximum power point tracking (MPPT) in photovoltaic (PV) systems via tracking algorithm of controlling the duty ratio of these converters. Examination of two famous DC-DC convertor topologies i.e. buck, and buck-boost converters has been performed here to scrutinize...
Permanent magnet synchronous generators used in small scale wind generating systems connected to the grid employ various types of power electronic converters. This paper reviews and gives a systematic classification of many power converter topologies available in the literature based on the electrical isolation between the generator and the grid. Emphasis is given on the type of rectifier used on...
Module Integrated Converters (MICs) are one of the most reliable solutions for the partial shading effects problem in Photovoltaic (PV) systems. There are number of converters employed as DC-DC converters in MIC structures. Among them, buck and boost converters are more favorable because of their simple implementation, reduced part counts, high efficiency and easy control. In this paper a comparison...
This paper proposes an elementary super lift boost converter to achieve high voltage transfer gains, high conversion ratio in addition with isolated full bridge boost converter are used in high voltage applications. The proposed circuit eliminates some of the drawbacks in the conventional full bridge boost converter such as voltage and current stresses through the power converter devices, possibility...
In this paper, a high gain modular multilevel dc-dc converter topology is proposed. As compared with the conventional modular multilevel step-up converters, the proposed converter offers an additional degree of control-freedom and higher steady-state voltage gain. The proposed converter operates in continuous conduction mode. A detailed small-signal modeling for the proposed converter based on state-space...
In recent years, significant progress has been made on switched-capacitor DC-DC converters as they enable fully integrated on-chip power management. New converter topologies overcame the fixed input-to-output voltage limitation and achieved high efficiency at high power densities [1–6]. SC converters are attractive to not only mobile handheld devices with small input and output voltages, but also...
As most of the electronic appliances use DC power so improvement in AC-DC converter is always at large by the researchers. The factors of improvement of power quality are reduction in total harmonic distortion and improvement in power factor at input ac, and tight output dc regulation. In such context, the AC-DC boost converters have gained significant importance, especially when they are used in...
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