High voltage gain dual‐input dual‐output DC‐DC converter with reduced voltage stress on semiconductors

Abstract

This paper proposes a new nonisolated multiport DC-DC converter with two inputs and two outputs with different voltage levels. Different energy sources with distinct voltage-current characteristics can be utilized as the input sources. Regarding multiple outputs, the proposed converter can be utilized in electric vehicles (EVs) to supply the DC traction motor and the auxiliary loads. The main advantages of the proposed converter include the high voltage gainwith small values of the duty cycles, low normalized peak voltage stress (NPVS) across the semiconductors, and the continuous input currents. The voltage stress across the semiconductors is lower than the maximum output voltage. This feature makes it possible to use the switches with low turn-on resistance and the diodes with reduced rating voltage. Performance principals of the proposed converter along with the steady-state analysis, such as the derivation of the voltage gains, voltage and current stresses of the semiconductors, etc, are carried out. Experimental measurements made for the laboratory prototype of the proposed converter confirm the theoretical analysis. ;48:934-952.wileyonlinelibrary.com/journal/cta microelectronics, hybrid/electric vehicles, and lighting that includes electronic ballast and light-emitting diodes. 6 Regarding the abovementioned subjects, multi-input-multioutput (MIMO) DC-DC converters are employed in various applications. In Zhou et al, 7 a high step-up multiport DC-DC converter has been presented. Low voltage stress on the switches is the main feature of this structure. However, the voltage stress across the diode in one of the boost cells is equal to the output voltage. Furthermore, n inductors and n switches are needed for n-input single-output case, which causes the converter costs to be high. The converter in Deihimi et al 8 can provide higher voltage gains by increasing the number of inputs. However, the number of switches and inductors is increased, which in turn increases the cost and weight of the converter. The buck-boost and boost-based converter presented in Banaei et al 9 is capable of generating a high voltage gain. However, the output switch and diode experience high voltage stresses that limit its application. To have n-input in this converter, n inductors and n switches are required, which cause extra costs, big size, and high losses. A high step-up noncoupled inductor-based multiport DC-DC converter with reduced normalized peak voltage stress (NPVS) across the semiconductors has been presented in Varesi et al. 10 The modularity and continuous input currents are the other advantages of this converter. A two-phase high step-up DC-DC converter with reduced voltage stress across the switches and diodes has been presented in Hwu and Jiang. 11 The switched-capacitor-diode technique is applied to the conventional boost converter to increase the voltage gain in Hou et al. 12 A single-pole switch leg-based converter with three output ports and one bidirectional battery port has been presented by Kim and Kwak. 13 Saad...

Design and control of a reconfigurable high‐gain battery integrated dc‐dc boost converter for time‐varying loads

“…These models are derived with the assumption that the converter operates in CCM mode and the equivalent circuit in each mode is linear-time-invariant (LTI). The state-space representation of the HGBIBC is given by (27).…”

“…Multiport dc-dc converters (MPCs) integrate the desired features (DISO and SIDO operation) in a single converter, thereby resulting in higher power density, higher efficiency, and compact design. [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32] A review and analysis of MPC and battery-integrated converters for renewable energy application were given by Bhattacharjee et al 13 and Deihimi and Mahmoodieh. 14 Topologies for conversion into MPC are explored by Kwasinski, 15 while a systematic approach to derive three-port converter (TPC) topologies having dualinput and dual-output feature was also presented [16][17][18] Chien et al 26 proposed a high-voltage gain TPC using eight switching devices (SDs) and five passive energy storage elements (PESEs), including one coupled inductor.…”

“…14 Topologies for conversion into MPC are explored by Kwasinski, 15 while a systematic approach to derive three-port converter (TPC) topologies having dualinput and dual-output feature was also presented [16][17][18] Chien et al 26 proposed a high-voltage gain TPC using eight switching devices (SDs) and five passive energy storage elements (PESEs), including one coupled inductor. A two-input two-output converter 27 with different output voltages gains was reported, but it has eight SDs and six PESEs. An MPC based on cascaded boost converter 29 was configured using four SDs and six PESEs.…”

“…It is observed that the voltage gain of the proposed converter is higher than that of the converters having the same voltage gain as that of conventional boost converter (CBC) under isolated battery case (IBC). [16][17][18][19][20][21][22][23][24][25][26][27][28] The number of elements used is low compared to other converters having the same gain as of CBC [21][22][23]28 or even with higher gain. 26,27 Also, the proposed converter has the low number of switches.…”

“…However, either class or type of converters only partially serves the purpose of power management. Multiport dc‐dc converters (MPCs) integrate the desired features (DISO and SIDO operation) in a single converter, thereby resulting in higher power density, higher efficiency, and compact design 13–32 . A review and analysis of MPC and battery‐integrated converters for renewable energy application were given by Bhattacharjee et al 13 and Deihimi and Mahmoodieh 14 .…”