Non-isolated multiple input multilevel output DC-DC converter for hybrid power system

Abstract

<p><span>The utilization of multisources of energy in a compact and an effective power system gains an essential role in power electronic industry. As such, the design and simulation of a new non-isolated Multiple Input Multilevel Output (MIMLO) DC-DC converter for hybrid power system is presented. The MIMLO DC-DC converter can be integrated in renewable energy, such as fuel cells, wind turbines and photovoltaic arrays etc, to get the best output voltages. The MIMLO DC-DC converter powers the load from renewable energy sources through the independence of the availability of other sources. The proposed topology has been simulated by using MATLAB/Simulink software to testify the performance control operation of the Multiple Input Multilevel Output DC-DC converter. The results of the carried-out simulation favor the usage of multi-input voltage, rather than a single input voltage. The MIMLO design has the advantages of a simple configuration, reduced number of switches, fewer components, high efficiency, and high conversion ratio. The Multilevel Output DC-DC converter provides high voltage transfer with low size inductors, reduction of losses, low stress voltage on switches and diodes. </span></p>

Minimal switching of multiple input multilevel output DC-DC converter

“…VO (V) dT=0.6 dM=0.6 ∆d0.6% dT=0.7 dM=0.7 ∆d0.7% dT=0.8 dM=0.8 ∆d0.8% dT=0.9 dM=0.9 ∆d0.9% The performance parameter of the response of MS-MIMLO DC-DC converter during transient process is shown in Table 5. The simulation results demonstrated an increase in the percentage of duty cycle, peak time, and rise time as well as decrease in the percentage of other parameters, such as slaw rate, peak to peak value and over shoot compared to TIMLO controller with low input voltage (Vin = 30 V) [25]. The result of simulations verified the proposed converter effectiveness when input voltage increased (Vin =100V).…”

“…The effectiveness and validity of MS-MIMLO DC-DC module have been investigated in comparison with the non-isolated MIMLO DC-DC converter [25]. The comparison includes overshot, peak time, slow rate, rise time, peak to peak voltage and efficiency.…”

“…The duty ratio is almost around unity for high output voltage as it is seen in the step-up voltage of the non-isolated DC-DC boost converter topology [20]- [24]. The proposed MS-MIMLO DC-DC converter topology has a reduced number of switches of three inputs multilevel output (TIMLO) to facilitate the connection of available source among multiple sources of input [25]. The simulation results of the proposed topology have been carried out with comparison to existing of theoretical results of this study to validate the acquired results.…”

Method for improving ripple reduction during phase shedding in multiphase buck converters for SCADA systems

“…The suggested multiple input structure's basic cell consists of two switches and a DC source. The switches are isolated from one another [17]. The converter is made up of four-unit cells, each of which includes a DC voltage source, a transistor as a switch, and a diode [18].…”

Using Y-source network as a connector between turbine and network in the structure of variable speed wind turbine

“…Another advantage of using renewable energy sources is minimizing the size of power production units and increasing the distributed generation units, the proximity of the units of production and consumption of electric power and thus reduce losses and increase efficiency [1]- [22]. One of the highly used renewable energy that had been in consideration is wind energy [1], [4], [14], [16], [19], [20], [23], [24]. Using wind energy specially in windy areas in addition to the economic saving, increased quality will also be delivered.…”