Design and implementation of high efficiency non-isolated bidirectional zero voltage transition pulse width modulated DC–DC converters

Mirzaei, Amin; Jusoh, Awang; Salam, Zainal

doi:10.1016/j.energy.2012.09.035

Cited by 37 publications

(15 citation statements)

References 21 publications

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“…Therefore, a high step‐up interface circuit is mostly used to increase their output power. Generally speaking, most of step‐up DC‐DC converters suffer from high inrush current, high voltage stress, and limited static gain . Recently, several impedance source network structures are introduced by researchers to improve the performance of the high step‐up converters such as the Γ‐Z‐source, flipped‐Γ‐Z‐source, T‐source, trans‐Z‐source, TZ‐source, LCCT‐Z‐source/quasi‐LCCT‐Z‐source, Y‐source network, quasi Y‐Source network, and A‐source.…”

Section: Introductionmentioning

confidence: 99%

A fully soft switched high step‐up SEPIC‐boost DC‐DC converter with one auxiliary switch

Mirzaei

Rezvanyvardom

Najafi

2019

Circuit Theory & Apps

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Summary This paper proposed a new single‐ended primary inductor converter (SEPIC)‐boost DC‐DC converter that uses only one auxiliary switch to create soft switching condition for all semiconductor devices. The auxiliary circuit comprises one power switch (Sa), one resonant inductor (Lr), one resonant capacitor (Cr), and one diode (Do2). The auxiliary switch (Sa) controls the resonance during switching instants. The converter has simple structure and its control circuit remains pulse width modulation (PWM). Besides, the proposed converter has high voltage gain without using any transformer or coupled inductors. In addition, the auxiliary switch is not located in the main power path. Moreover, using soft switching techniques is the best way for reducing the size, weight, and volume of the converter. Furthermore, reduction of input inrush current and voltage stress for the main switch is obtained by using SEPIC‐boost structure. A laboratory prototype converter is designed and implemented. The experimental results presented confirm the theoretical and features of the proposed converter.

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Section: Introductionmentioning

confidence: 99%

A fully soft switched high step‐up SEPIC‐boost DC‐DC converter with one auxiliary switch

Mirzaei

Rezvanyvardom

Najafi

2019

Circuit Theory & Apps

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“…The zero voltage switching (ZVS) can be obtained with the aid of ripple free coupled inductors to the main active switches, and reverse recovery problems of anti‐parallel diodes of the active switches are resolved. In order to achieve ZVS operation and high efficiency in non‐isolated converters, the additional the auxiliary switches and coupled inductors were used. A high gain BDC was implemented with auxiliary active circuit based on coupled inductors and also with additional voltage clamped circuit, which is more complex than the earlier converters.…”

Section: Introductionmentioning

confidence: 99%

Design and implementation of a zero voltage transition bidirectional DC‐DC converter for DC traction vehicles

Bhajana

Drábek

Aylapogu

2019

Int Trans Electr Energ Syst

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Summary This paper presents a new soft‐switching non‐isolated bidirectional converter (BDC) for the energy storage systems in DC traction. For this proposed converter, the soft commutation is achieved by turning on the main power switches with the help of auxiliary active switches, the inductor, the capacitor, and diodes. The basic operation of the converter is characterized as two operating types: boost and buck. The switching devices obtained zero voltage transition (ZVT) in both operating types, but the major advantage of this topology is achieved by reducing turn‐on losses with improved efficiency and minimizing reverse recovery time of IGBTs' anti‐parallel diodes. This paper mainly describes the principles of operation, design analysis, simulation, and implementation of DC‐DC converter of laboratory prototype with 150 V/250 V system under 1‐kW output power.

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“…Recently, with the increasing application of high voltage DC power supplies, the high‐gain step‐up DC‐DC converter has become more and more popular in many industrial fields, such as high‐intensity‐discharge lamp ballasts for automobile headlamps, fuel‐cell energy conversion systems, solar‐cell energy conversion systems, and battery backup systems for uninterruptible power supplies . In the application of automotive headlights, the operating voltage of the lighted lamp must be about 85 V, but the voltage of the battery for the automobile is only 12 V. In general, DC‐DC converters can be divided into two types: the isolated converter and the non‐isolated converter …”

Section: Introductionmentioning

confidence: 99%

“…1 In the application of automotive headlights, the operating voltage of the lighted lamp must be about 85 V, but the voltage of the battery for the automobile 2 is only 12 V. In general, DC-DC converters can be divided into two types: the isolated converter and the non-isolated converter. 3,4 The isolated DC-DC converter introduces an AC link where a transformer can be used to realize the isolation between the input and output. In fact, the converter might better be called a DC-AC-DC converter.…”

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confidence: 99%

A family of non‐isolated transformerless high step‐up DC‐DC converters

Liu

Yao

2018

Int Trans Electr Energ Syst

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Summary A family of new non‐isolated high step‐up DC‐DC converters has been devised and compared in terms of their characteristics (voltage gain, number of components, voltage stress on the diode and switch, etc). The high boost DC‐DC converters depend mainly on charging and discharging of the inductors and capacitors to realize step‐up function. One of the proposed converters is named the non‐isolated high step‐up (NHS) converter, which has been taken as an example to analyze. It is composed of a switch, two inductors, two capacitors, and three diodes. The voltage gain of NHS converter in continuous‐conduction mode (CCM) and discontinuous‐conduction mode (DCM) was analyzed, and the parameter of the components was designed. Theoretical analysis shows that NHS converter is characterized by high voltage gain, low switching stress, and low inductor current ripple. Besides, the voltage stress of the diodes on the NHS converter was analyzed. The theoretical analysis was verified by the simulation by Matlab/Simulink and construction of a working device. Furthermore, the closed loop system was established according to the corresponding small signal model. Step response was investigated by the system, when load and input source suddenly change.

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Design and implementation of high efficiency non-isolated bidirectional zero voltage transition pulse width modulated DC–DC converters

Cited by 37 publications

References 21 publications

A fully soft switched high step‐up SEPIC‐boost DC‐DC converter with one auxiliary switch

A fully soft switched high step‐up SEPIC‐boost DC‐DC converter with one auxiliary switch

Design and implementation of a zero voltage transition bidirectional DC‐DC converter for DC traction vehicles

A family of non‐isolated transformerless high step‐up DC‐DC converters

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