A Non-Isolated Bridge-Type DC–DC Converter for Hybrid Energy Source Integration

Athikkal, Sivaprasad; Kumar, Gangavarapu Guru; Kumaravel, S.; Ashok, S.

doi:10.1109/tia.2019.2914624

Cited by 70 publications

(26 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The conversion efficiency of Buck-Boost multi-input DC-DC converter with serial simultaneous power supply in [17] under U i1 /U i2 =48V/36V, U dc =400V, and p o =200W is 80%, the conversion efficiency of the dual forward units integrated DC-DC multi-input converter in [20] under U i1 /U i2 =120V/80V, U dc = 400V, and p o =200W is 91% ,while the converters proposed in [13]-[116], [18]- [19], [21] do not provide the conversion efficiency. Compared with the two-stage multi-input inverters in [17] and [20], the proposed multi-input inverter has higher or similar conversion efficiency, simpler circuit structure, smaller volume and weight; Compared with the two-stage multi-input inverters in [13]- [16], [18]- [19], [21], the proposed multi-input inverter which has novelty of circuit topology, EMCS, and the concept of the equivalent switching cycle has advantages such as isolation among load, multi-input sources and battery, single-stage voltage boosting, wide regulating range of duty cycle (0~0.7), strong load adaptability, smaller size and weight. 1)The proposed multi-input IGS circuit structure is composed of a single-stage Boost type multi-input highfrequency-link inverter and a single-stage isolated battery charging/discharging converter connected in parallel on the AC output, it includes push-pull, push-pull forward, halfbridge and full bridge 4 types of circuit, the system has advantages such as simultaneous power supply, isolation among load, multi-input sources and battery, single-stage voltage boosting, wide regulating range of duty cycle, strong load adaptability, direct control of the output current and easy realizing the MPPT of the PV cell，etc.…”

Section: Experiments Verificationsmentioning

confidence: 99%

Boost Type Multi-Input Independent Generation System With Multi-Winding Simultaneous Power Supply

2021

View full text Add to dashboard Cite

The Boost type multi-input independent generation system (IGS) with multi-winding simultaneous power supply is proposed and deeply investigated, the important conclusions are obtained. Its circuit structure is composed of a single-stage multi-winding Boost type multi-input inverter with highfrequency-link and a single-stage isolated battery charging/discharging converter connected together at the output end, its circuit topological family includes 4 types of circuit such as full-bridge etc, the maximum power energy management control strategy (EMCS) with output voltage single-loop and three-state onecycle phase-shift modulation is adopted, and the magnetic saturation of the energy storage inductor and the distortion of output voltage of the IGS are effectively suppressed. By comparing the load power and the total input sources power, the proposed EMCS achieves smooth transition among different power supply modes. The designed and developed 2.5kVA experimental prototype has shown that the proposed IGS has the advantages such as single-stage conversion, high frequency galvanic isolation among load, multi-input sources and battery, simultaneous power supply in a high-frequency switching cycle, wide regulating range of duty cycle , small in size and light in weight, and strong load adaptability, etc.INDEX TERMS Independent generation system, multi-input inverter, multi-winding Boost, three-state one-cycle phase-shift modulation, simultaneous power supply.

show abstract

Section: Experiments Verificationsmentioning

confidence: 99%

Boost Type Multi-Input Independent Generation System With Multi-Winding Simultaneous Power Supply

2021

View full text Add to dashboard Cite

show abstract

“…Instead of using multiple separate converters, a multi-input converter (MIC) can be used such that some different converters exist in a system are integrated together in order to reduce the number of components [3][4][5]. Similar to other dc-dc converters, the multi-input converters are divided into two categories; isolated [6][7][8][9][10] and non-isolated converters [11][12][13][14]. Generally, transformers increase the losses, cost, volume, and the design complexity of isolated converters [15].…”

Section: Introductionmentioning

confidence: 99%

Soft-Switched Three-Port DC-DC Converter With Simple Auxiliary Circuit

et al. 2021

View full text Add to dashboard Cite

In this paper, a new high efficiency soft-switching non-isolated three-port converter (TPC) is proposed. In the conventional TPC, three switches are required to process power in different directions between inputs and output. Providing soft-switching condition for all switches using a low number of auxiliary components is a challenging task. In this paper, the conventional TPC topology is modified by changing its structure and adding a simple auxiliary circuit such that all switches operate under soft-switching condition in all operating modes. To reduce the volume of the converter, the magnetic components are integrated using a coupled inductor in the auxiliary soft-switching cell. In this paper, various converter operating modes are presented, and design considerations are discussed. Finally, a prototype 200 W, 100 V converter is implemented in the laboratory, and the theoretical analysis is validated by the experimental results.INDEX TERMS Distributed energy systems, dc-dc converters, soft-switching, hybrid power system, multi-input converter.

show abstract

“…In this converter, ESS cannot directly receive power from EGS and the switches operate under hard switching condition. In [15], [16], in order to derive a dual-input single-inductor converter, the bridge arrangement is used. In this arrangement, one switch and one of the input sources are placed in series which establish a branch.…”

Section: Introductionmentioning

confidence: 99%

Efficient Multi-Port Bidirectional Converter With Soft-Switching Capability for Electric Vehicle Applications

et al. 2021

View full text Add to dashboard Cite

In this paper, to solve the hard-switching operation problem and the lack of existing a bidirectional power flow path from output to the energy storage device of the conventional three-port converter, a new soft-switched bidirectional multi-port converter is proposed. A large number of switches, different power flow paths which vary in each operating mode, and changing the outputs and their power levels are some of the challenges to provide soft-switching conditions in multi-port converters. In the proposed converter, by changing the topology of the conventional three-port converter, the bidirectional power exchangeability between ports is provided. Moreover, a soft-switching cell is added, which can operate independently from the output power levels. Less number of components with low volume is one of the important features of this multi-port converter. Due to the soft-switching operation of the proposed converter, the size of passive components and heat-sink is reduced. In addition, by the use of coupled inductors in the soft-switching cell, only one magnetic core is used and thus, single-stage power conversion is achieved and conduction loss is reduced. In this paper, the converter operating modes are presented, and design considerations are discussed. Finally, a 200 W-200 V prototype is implemented, and the theoretical analysis is validated by the experimental results.INDEX TERMS Multi-port converter, dc-dc converter, soft-switching, electric vehicle, hybrid power systems.

show abstract

A Non-Isolated Bridge-Type DC–DC Converter for Hybrid Energy Source Integration

Cited by 70 publications

References 20 publications

Boost Type Multi-Input Independent Generation System With Multi-Winding Simultaneous Power Supply

Boost Type Multi-Input Independent Generation System With Multi-Winding Simultaneous Power Supply

Soft-Switched Three-Port DC-DC Converter With Simple Auxiliary Circuit

Efficient Multi-Port Bidirectional Converter With Soft-Switching Capability for Electric Vehicle Applications

Contact Info

Product

Resources

About