Operational Modes and Output-Voltage-Ripple Analysis and Design Considerations of Buck–Boost DC–DC Converters

Babaei, Ebrahim; Mahmoodieh, Mir Esmaeel Seyed; Mahery, Hamed Mashinchi

doi:10.1109/tie.2011.2134056

Cited by 82 publications

(44 citation statements)

References 15 publications

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“…The leakage inductances of the primary and secondary sides were ignored, and 1 K  was considered. In CCM, the voltage stress on switch 1 S and diodes 1 D , 2 D ,  and 5 D is obtained as follows: Fig. 10 shows a comparison of the voltage stress on the main switch of the proposed converter and that for the presented converters in [24], [25], and [32] in CCM operation under 3 n  .…”

Section: Calculation Of Voltage Stress On Active Devicesmentioning

confidence: 99%

“…Electrolytic capacitors in power electronics are often eliminated because they possess relatively low reliability and a short lifetime. The capacitances of 1 C , 2 C ,  and 4 C used in the proposed converter do not need to be high because the switching frequency of the proposed converter is quite high (25 kHz). Thus, film capacitors, which are used in light-emitting diode drivers, can be used in the proposed converter.…”

Section: A Proposed Structure Design Considerationsmentioning

confidence: 99%

“…Photovoltaic (PV) sources have become increasingly popular in the last 10 years, and estimations show that a significant portion of renewable energy in the future will be produced by PV sources because PV systems do not create pollution and are highly reliable [2], [3]. The output voltage of a PV panel is low (about 15 V to 40 V) [4].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Novel High Step-Up DC/DC Converter Structure Using a Coupled Inductor with Minimal Voltage Stress on the Main Switch

Moradzadeh¹,

Hamkari²,

Zamiri³

et al. 2016

Journal of Power Electronics

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A high-step-up DC/DC converter for renewable energy systems is proposed. The proposed structure provides high voltage gain by using a coupled inductor without the need for high duty cycles and high turn ratios. The voltage gain is increased through capacitor-charging techniques. In the proposed converter, the energy of the leakage inductors of the coupled inductor is reused. This feature reduces the stress on the switch. Therefore, a switch with low ON-state resistance can be used in the proposed converter to reduce losses and increase efficiency. The main switch is placed in series with the source. Therefore, the converter can control the energy flow from the source to the load. The operating principle is discussed in detail, and a steady state analysis of the proposed converter is conducted. The performance of the proposed converter is verified by experimental results.

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Section: Calculation Of Voltage Stress On Active Devicesmentioning

confidence: 99%

Section: A Proposed Structure Design Considerationsmentioning

confidence: 99%

See 1 more Smart Citation

Novel High Step-Up DC/DC Converter Structure Using a Coupled Inductor with Minimal Voltage Stress on the Main Switch

Moradzadeh¹,

Hamkari²,

Zamiri³

et al. 2016

Journal of Power Electronics

View full text Add to dashboard Cite

show abstract

“…According to (15), L C is function of V i and R. Due to Fig. 3, as the input voltage changes from V i,min to V i,max and the load resistance changes from R min to R max , the operation region of the inverter would be a rectangul (ABCD) Fig.…”

Section: Calculating the Critical Inductance Between The Ccm Andmentioning

confidence: 99%

“…Therefore, the worst operational condition (the MOVR condition) occurs for maximum value of V i,max and the minimum value of R min . Under this condition and according to (15), the critical inductance for V i,max and R min are as follows:…”

Section: Maximum Output Voltage Ripplementioning

confidence: 99%

Investigating Buck DC-DC Converter Operation in Different Operational Modes and Obtaining the Minimum Output Voltage Ripple Considering Filter Size

Babaei

Mahmoodieh²,

Sabahi³

2011

Journal of Power Electronics

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This paper investigates the operational modes of buck dc-dc converters and their energy transmission methods. The operational modes of such converters are classified in two types, discontinuous conduction mode (DCM) and continuous conduction mode (CCM). In this paper, the critical inductance relation of DCM and CCM is determined. The equations of the output voltage ripple (OVR) for each mode are obtained for a specific input voltage and load resistance range. The maximum output voltage ripple (MOVR) is also obtained for each mode. The filter size is decreased and the minimum required inductance value is calculated to guarantee the minimization of the MOVR. The experimental and simulation results in PSCAD/EMTDC prove the correctness of the presented theoretical concepts.

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Cost‐efficient nonisolated three‐port DC‐DC converter for EV/HEV applications with energy storage

Suresh

Chellammal

Bharatiraja

et al. 2019

Int Trans Electr Energ Syst

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Summary Electric vehicle (EV) systems are the promising future transportation system as they play a key role in reducing the atmospheric carbon emission, and it becomes the focal point of research and development in the current epoch. This paper presents the design and development of three‐port dc‐dc buck‐boost converter (TPB2C) applicable for EV. The main feature of the proposed converter is its ability to handle diversified energy sources of different voltage and current characteristics with high output gain. The designed single stage converter with reduced components count can be operated in buck, boost, and buck‐boost mode with partial bidirectional power flow capability. In addition, the TPB2C converter could provide buck and boost output simultaneously unlike its counterparts which can output either buck or boost output. In buck mode, the suggested topology charges the battery and thereby eliminates a separate battery management system. Roof top photovoltaic panel and battery are the two input sources for the suggested converter. A small‐signal model of the converter is developed using state‐space approach, and the steady‐state performance of the converter is analyzed comprehensively. The device level simulations carried out in MATLAB‐Simulink and the experimental laboratory prototype model are validated using a dSPACE1104 real‐time digital controller.

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Operational Modes and Output-Voltage-Ripple Analysis and Design Considerations of Buck–Boost DC–DC Converters

Cited by 82 publications

References 15 publications

Novel High Step-Up DC/DC Converter Structure Using a Coupled Inductor with Minimal Voltage Stress on the Main Switch

Novel High Step-Up DC/DC Converter Structure Using a Coupled Inductor with Minimal Voltage Stress on the Main Switch

Investigating Buck DC-DC Converter Operation in Different Operational Modes and Obtaining the Minimum Output Voltage Ripple Considering Filter Size

Cost‐efficient nonisolated three‐port DC‐DC converter for EV/HEV applications with energy storage

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