A new family of non‐isolated PWM DC–DC converter with soft switching

Gerami, Elham; Delshad, Majid; Amini, Mohammad Reza; Yazdani, Mohammad Rouhollah

doi:10.1049/iet-pel.2018.5351

Cited by 11 publications

(12 citation statements)

References 21 publications

(45 reference statements)

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“…Also, the power density of the converter is reduced. The coupled inductor technique, which is used in the proposed converter, is one of the most popular methods to increase the voltage gain, but by using more than one core, the size and volume of the converter are increased [10], [11].…”

Section: Introductionmentioning

confidence: 99%

“…In the switching converters, the size and the weight of the reactive components should be downgraded to reduce the costs of the converter [10], [11]. To achieve this, the operation should be on high switching frequency [12]; therefore, in high-frequency hard-switched converters, the losses of switching and the EMI are increased, resulting in lower efficiency in comparison with the soft switched converters due to the sudden changes of voltage and current of the switches [11], [13]. To overcome these drawbacks, various passive [14], [15] or active [16], [17] soft switching techniques are proposed.…”

Section: Introductionmentioning

confidence: 99%

“…To guarantee the stability and adjust the output voltage to the required value under the load variations, the output voltage of the proposed converter can be controlled by Sliding Mode Control (SMC) technique, which is more attractive than regular PWM controllers used in [11] and [14]. The advantages which make the SMC family more suitable compared to the proportional-integral (PI) controller are the stability against parameter variations, disturbances rejection, fast dynamic responses, and inherent robustness of tracking control [21], [22].…”

Section: Introductionmentioning

confidence: 99%

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A High Step-Up PWM Non-Isolated DC-DC Converter With Soft Switching Operation

et al. 2022

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A high step-up PWM non-isolated dc-dc converter with soft switching is proposed in this paper. The converter has minimum auxiliary elements to achieve high power density and high voltage gain. The ZVS operation of the main power switch results in negligible capacitive turn-on losses. Since the duty cycle of the auxiliary switch is narrow and its operation is under ZCS condition, the losses that the auxiliary circuit imposes are not significant. Also, all the diodes are operated under soft-switching conditions solving the reverse recovery problem. All the inductors are coupled on only one magnetic core, reducing size and conduction losses. Compared to the hard switched counterpart, the electromagnetic interference of the proposed converter is reduced. Furthermore, the output voltage of the proposed converter is controlled by an integral sliding mode control strategy during the load variations. Also, the proposed integral sliding mode control strategy has been compared with the PI control strategy, improving the transient response and the robustness under load variations while the switching frequency is constant. The effectiveness and accuracy of the proposed converter are verified by practical laboratory results which are obtained from a 250W prototype.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A High Step-Up PWM Non-Isolated DC-DC Converter With Soft Switching Operation

et al. 2022

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“…However, the addition of numerous components has resulted in a complicated circuit, as well as a decrease in efficiency in the aforementioned converter [14]. A flyback converter can be merged with another layout, and voltage gain can be attained by altering the turn ratio of the connected inductor through a linked inductor [15,16].…”

Section: Introductionmentioning

confidence: 99%

A Novel High-Efficiency Multiple Output Single Input Step-Up Converter with Integration of Luo Network for Electric Vehicle Applications

R¹,

Balaganesh²,

Paramasivam³

et al. 2022

International Transactions on Electrical Energy Systems

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Concerns about pollution, climate change, limited fossil fuel supplies, and the desire to eliminate energy dependency have sparked a surge in interest in electric vehicles (EVs). EV requirements have resulted in a variety of difficulties and remedies in EV technology. One of them is the use of DC-DC converters to transfer the level of voltage from the battery in an EV to other needed voltage levels. An independent converter for each operating voltage might be used as a remedy. On the other hand, single input multiple output (SIMO) converters can be utilized to decrease costs, reduce switching loss, and thus enhance the system efficiency. In this paper, a nonisolated step-up converter with the integration of the Luo network is proposed for multiple outputs (24 V and 48 V). In electric vehicles, 48 V is utilized for battery backup, while 24 V is utilized for the horns, headlights, telematics, or the microcontroller. The experimental observations of a 36 V, 600 mA, 24 W prototype confirm the theoretic examination and demonstrate the advantages of the proposed converter over other multioutput converters. The STM microcontroller, based on an ARM cortex microprocessor, is linked into the Luo network for making pulses. The proposed converter achieves 94.2% efficiency at full power. The proposed converter’s performance is evaluated through MATLAB/SIMULINK software, and the results are validated experimentally.

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“…From Fig. 3, the type 1 devices perform two detection levels and a Owing to the energy-saving topic, many researches put much emphasis on the power conversion efficiency [6][7][8][9][10][11][12][13] and standby power losses of converter [14,15]. However, some PDs have low power modes or standby modes and for this reason it may be removed by the PSE.…”

Section: Introductionmentioning

confidence: 99%

Adaptive maintain power signature scheme for power over ethernet system

Zhu

2020

IET Power Electronics

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Power over Ethernet (PoE) technology has been widely used in networking market for its space-saving, flexibility and low cost. As the PoE system needs to meet maintain power signature (MPS) requirements specified by the IEEE standard, it is important for powered device (PD) to draw a predetermined minimum current. If the PD current goes below the minimum current, the power sourcing equipment (PSE) assumes the PD has been disconnected and terminates operating voltage. If a fixed current is added to exceed the minimum current, a phenomenon of power wasting will be caused during standby or ultralow power mode. This study proposes an adaptive MPS scheme to achieve power-saving and meet the MPS requirements. It consists of current comparator and MPS circuit to extract the periodic pulsed current for MPS requirements. The proposed scheme has been fabricated in 0.18 μm 100 V Bipolar-CMOS-DMOS process adding no extra pin and an area is 1.45 × 2.23 mm 2. Test results show that the proposed interface sources a periodic pulsed current with a period of 318 ms and 25% duty cycle to tackle the issue of MPS absence in very low power condition.

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A new family of non‐isolated PWM DC–DC converter with soft switching

Cited by 11 publications

References 21 publications

A High Step-Up PWM Non-Isolated DC-DC Converter With Soft Switching Operation

A High Step-Up PWM Non-Isolated DC-DC Converter With Soft Switching Operation

A Novel High-Efficiency Multiple Output Single Input Step-Up Converter with Integration of Luo Network for Electric Vehicle Applications

Adaptive maintain power signature scheme for power over ethernet system

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