High-Gain Zero-Voltage Switching Bidirectional Converter With a Reduced Number of Switches

Aamir, Muhammad; Mekhilef, Saad; Kim, Hee‐Jun

doi:10.1109/tcsii.2015.2433351

Cited by 77 publications

(47 citation statements)

References 13 publications

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“…A high-gain DC-DC converter has been introduced to obtain high dc-link voltage from the low voltage battery bank [31]. SR has been applied to decrease the conduction losses and force the circuit to operate under ZVS conduction.…”

Section: Boost Convertermentioning

confidence: 99%

A High-Frequency Isolated Online Uninterruptible Power Supply (UPS) System with Small Battery Bank for Low Power Applications

et al. 2017

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Uninterruptible power supplies (UPSs) are widely used to deliver reliable and high quality power to critical loads under all grid conditions. This paper proposes a high-frequency isolated online UPS system for low power applications. The proposed UPS consists of a single-stage AC-DC converter, boost DC-DC converter, and an inverter. The single-stage AC-DC converter provides galvanic isolation, input power factor correction, and continuous conduction of both input and output current. The low battery bank voltage is stepped up to high dc-link voltage by employing a high voltage gain boost converter, thus allows the reduction of battery bank to only 24 V parallel connected batteries. Operating batteries in parallel improves the battery performance and resolves the issues related to conventional battery banks that arrange the batteries in series combination. The inverter provides regulated output voltage to the load. A new cascaded slide mode (SM) and proportional-resonant (PR) control for the inverter has been proposed, which regulates the output voltage for both linear and non-linear loads. The controller shows excellent performance during load transients and step changes. Besides, the controller for boost converter and AC-DC converter is presented. Operating principle and experimental results of 1 kVA laboratory setup have been presented for the validation of proposed system.

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Section: Boost Convertermentioning

confidence: 99%

A High-Frequency Isolated Online Uninterruptible Power Supply (UPS) System with Small Battery Bank for Low Power Applications

et al. 2017

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“…This converter operates under zero-voltage switching condition and provides large voltage diversity in the both modes of operation. This enables the circuit to step up the lowbattery bank voltage to high dc-link voltage, and vice versa by employing only three switches, a coupled inductor, and an additional voltage clamped circuit [10].…”

Section: Topologymentioning

confidence: 99%

A Comparative Study of Four Different Non-Isolated Bidirectional DC-DC Converters

Nirmala¹,

Arulmozhi²,

Sundararaman³

2017

IJERA

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Inthis paper, four different topologies of Non-Isolated Bidirectional DC-DC converters are compared. Their modes of operations and the design of passive components are presented in detail for all the topologies. The selected topologies are simulated by using MATLAB /Simulink to verify the effectiveness of the converters. The simulation results and comparative studies are used to select the efficient topology. Finally, a 12-V/50-V Prototype model is implemented to verify the feasibility of the converter for the application of Uninterruptible Power Supply

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“…Nonetheless, these techniques require additional components, which will result in higher costs and complexity. Another approach to realize soft switching is to adopt coupled inductors [10][11][12][13][14][15][16][17][18][19]. By adding an additional winding, it can form another power flow path to achieve ZVS or ZCS.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Controller Design of a Universal Bidirectional DC-DC Converter

Liu

et al. 2016

Energies

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Abstract:In this paper, first the operating principles of a non-isolated universal bidirectional DC-DC converter are studied and analyzed. The presented power converter is capable of operating in all power transferring directions in buck/boost modes. Zero voltage switching can be achieved for all the power switches through proper modulation strategy design, therefore, the presented converter can achieve high efficiency. To further improve the efficiency, the relationship between the phase-shift angle and the overall system efficiency is analyzed in detail, an adaptive phase-shift (APS) control method which determines the phase-shift value between gating signals according to the load level is then proposed. As the modulation strategy is a software-based solution, there is no requirement for additional circuits, therefore, it can be implemented easily and instability and noise susceptibility problems can be reduced. To validate the correctness and the effectiveness of the proposed method, a 300 W prototyping circuit is implemented and tested. A low cost dsPIC33FJ16GS502 digital signal controller is adopted in this paper to realize the power flow control, DC-bus voltage regulation and APS control. According to the experimental results, a 12.2% efficiency improvement at light load and 4.0% efficiency improvement at half load can be achieved.

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High-Gain Zero-Voltage Switching Bidirectional Converter With a Reduced Number of Switches

Cited by 77 publications

References 13 publications

A High-Frequency Isolated Online Uninterruptible Power Supply (UPS) System with Small Battery Bank for Low Power Applications

A High-Frequency Isolated Online Uninterruptible Power Supply (UPS) System with Small Battery Bank for Low Power Applications

A Comparative Study of Four Different Non-Isolated Bidirectional DC-DC Converters

Analysis and Controller Design of a Universal Bidirectional DC-DC Converter

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