A Zeta‐based switched‐capacitor DC‐DC converter topology

Vosoughi, Naser; Abbasi, Maysam; Abbasi, Ehsan; Sabahi, Mehran

doi:10.1002/cta.2647

Cited by 32 publications

(47 citation statements)

References 30 publications

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“…But it can be noted that the FEZ converter offers a wide voltage gain and positive output voltage polarity when compared with a buck-boost converter. [33][34][35][36][37] Thus, the FEZ converter has been utilized to obtain appropriate DCLV and the duty ratio is varied according to the estimated back-EMF. The DCLV selector network is used to regulate dc-link voltage during and after the commutation interval for effective reduction of the CCR.…”

Section: F I G U R Ementioning

confidence: 99%

“…Thus, it is not considered to be a suitable tool for the application, such as CCR minimization in the case of the BLDCM drive. [33][34][35] 3. In addition, the FEZ converter provides better efficiency and wide voltage gain than the regular buck-boost converter.…”

Section: Mathematical Modeling Of the Fez Convertermentioning

confidence: 99%

“…In contrast, the buck-boost converter has poor efficiency, especially when operated with a duty ratio of less than 30% or more than 70%. 35,36 T A B L E 1 Note: Here C, L, D, S, and Tot. denote the number of capacitor, inductor, diode, switch, and total count of listed components, respectively.…”

Section: Mathematical Modeling Of the Fez Convertermentioning

confidence: 99%

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Front‐endzeta converter basedBLDCMdrive for efficient reduction of commutation current ripple usingnotch‐filter

Kumar

Gupta

Tiwari

2020

Int Trans Electr Energ Syst

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Summary Reduction of commutation current ripple (CCR) in the brushless direct current motor (BLDCM) drive using dc‐dc converter based topologies is achieving widespread popularity. However, undesired alternating current (AC) components are presented in the dc‐link voltage (DCLV) across the capacitor of the dc‐dc converter, which leads to a destabilization of the power supply during the commutation interval. In addition, unwanted audible noise and speed regulation occur which deteriorates the motor performance. In order to encounter these issues, different conventional compensation techniques based on the low‐pass filter (LPF) has been proposed. However, the LPF requires a close relation between dynamic coupling and active compensation. In view of the limitation, this paper proposes a notch‐filter to stabilize the DCLV. Performance of the notch‐filter is tested on a configuration of the BLDCM based on the front‐end zeta (FEZ) converter and DCLV selector circuit. The notch‐filter is used to stabilize the DCLV, whereas the DCLV selector circuit is employed to draw the regulated voltage drawn from the FEZ converter. Simulation and experimental results verify the effectiveness of the proposed control scheme for the BLDCM drive. The simulation and experimental results clearly reveal that the notch‐filter along with FEZ converter effectively stabilized the DCLV and alleviate the CCR.

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Section: F I G U R Ementioning

confidence: 99%

Section: Mathematical Modeling Of the Fez Convertermentioning

confidence: 99%

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Front‐endzeta converter basedBLDCMdrive for efficient reduction of commutation current ripple usingnotch‐filter

Kumar

Gupta

Tiwari

2020

Int Trans Electr Energ Syst

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“…The DC-DC power converters provide cramped and reliable solutions to power conversion. [1][2][3][4][5][6][7] However, applying of DC-DC converters in these application introduces new challenges to the system. One main concern is to reach a high step-up voltage gain while having minimum stress on the switches.…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of a switched‐capacitor DC‐DC converter with variable conversion ratio

Kurdkandi

Farhadi

Babaei

et al. 2020

Circuit Theory & Apps

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In order to increase the low voltage of renewable energy systems to a relatively high bus voltage for the downstream DC-AC grid-connected inverter, a new DC-DC switched-capacitor converter with the potential of output voltage regulation is proposed. The operational principles, with regard to the specific switching conditions, are provided the relationships for the parameter design and efficiency calculation. The topology makes it possible to integrate the high voltage gain and excellent output regulation that open a huge area of applications and create the possibility of maximum power point tracking (MPPT), which is an important advantage of proposed structure. Moreover, the most important advantages of the proposed structure are continuous input current, variety of the DC voltage source values, and the cost of the converter in comparison with the conventional structures. A comparison with other similar structures is given to show the merits of the proposed topology. Finally, the experimental results are presented to clarify the theory and feasibility of the proposed converter. K E Y W O R D S DC-DC power conversion, high step-up voltage gain, switched capacitor (SC)

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“…Nowadays, DC‐DC converters are popular power electronic‐based circuits that have attracted many researchers' and industries' interests in various applications . The switched‐capacitor (SC) converters are of the most important DC‐DC converters, which are increasingly used because of their capabilities and features like lower electromagnetic interference (EMI), lighter weight, lower cost, higher energy density, and the potential for full integration .…”

Section: Introductionmentioning

confidence: 99%

A zero‐current switching switched‐capacitor DC‐DC converter with reduction in cost, complexity, and size

Abbasi

Tousi

et al. 2019

Circuit Theory & Apps

Self Cite

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Summary This paper presents a new step‐up switched‐capacitor (SC) DC‐DC converter which has many advantages such as reduction in investment cost, control complexity, number of components, voltage stress on components, and size over traditional topologies. In the proposed structure, power switches are reduced in number which in turn leads to the merits mentioned earlier and makes the converter more suitable for industrial applications. Furthermore, a previously introduced zero‐current switching (ZCS) method is used here which provides soft switching for the devices. There is also a reduction in the number of required inductors to achieve ZCS due to the decreased number of switches in the proposed converter. The proposed converter is validated by comprehensive simulation results in MATLAB Simulink environment and also precise experimental results which show the acceptable performance of the proposed topology.

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A Zeta‐based switched‐capacitor DC‐DC converter topology

Cited by 32 publications

References 30 publications

Front‐endzeta converter basedBLDCMdrive for efficient reduction of commutation current ripple usingnotch‐filter

Front‐endzeta converter basedBLDCMdrive for efficient reduction of commutation current ripple usingnotch‐filter

Design and analysis of a switched‐capacitor DC‐DC converter with variable conversion ratio

A zero‐current switching switched‐capacitor DC‐DC converter with reduction in cost, complexity, and size

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