Wide Input-Voltage Range Boost Three-Level DC–DC Converter With Quasi-Z Source for Fuel Cell Vehicles

Zhang, Yun; Shi, Jilong; Zhou, Lei; Li, Jing; Sumner, Mark; Wang, Ping; Xia, Changliang

doi:10.1109/tpel.2016.2625327

Cited by 105 publications

(62 citation statements)

References 33 publications

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“…As for a converter with 100 to 300 V input and 50 V output (used in the prototype), kT2 can be decided by (7) and the value is 16; according to (8), k T1 = 48.…”

Section: Turn Ratiosmentioning

confidence: 99%

“…Second, three-level (TL) dc-dc converters (TLDCs) are suitable topologies for high voltage applications due to only half the input voltage stress on the primary switches [4]. The first diode-clamped TLDC was proposed in 1992 [4], and then, many other efforts have been made on this topic, e.g., novel topologies and corresponding control strategies [4][5][6][7][8][9][10][11], wide range soft switching solutions [12][13][14][15][16] and reduced filter size solutions [16][17][18][19]. Finally, modular multilevel dc-dc converters (MMDCs) can also be used in high voltage applications [20].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Comparative Evaluation of Wide-Range Soft-Switching PWM Full-Bridge Modular Multilevel DC–DC Converters

Chen

Dang

et al. 2020

Electronics

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This paper discusses some wide-range soft-switching full-bridge (FB) modular multilevel dc–dc converters (MMDCs), and a comparative evaluation of these FB MMDCs is also presented. The discussed topologies have all merits belonging to conventional FB MMDCs, e.g., smaller voltage stress on the primary switches, no added primary clamping devices and modular primary structure. In addition, the primary switches in each converter can obtain zero-voltage switching (ZVS) or zero-current switching (ZCS) in a wide load range. Two presented topologies are selected as examples to discuss in detail. The proposed FB MMDCs are assessed and evaluated based on performance, components and topology structure indices, such as soft switching characteristics, current stress, power loss distribution, number of added devices, complexity of structure and added cost. Experimental results are also included to verify the feasibility and advantages of the new topologies.

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“…As for a converter with 100 to 300 V input and 50 V output (used in the prototype), kT2 can be decided by (7) and the value is 16; according to (8), k T1 = 48.…”

Section: Turn Ratiosmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparative Evaluation of Wide-Range Soft-Switching PWM Full-Bridge Modular Multilevel DC–DC Converters

Chen

Dang

et al. 2020

Electronics

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“…Especially, the ripple reduction of the input current will be affected both in the lower and higher duty cycle ranges, which are not close to 0.5. A three-level Boost DC-DC converter with a quasi-Z source for fuel cell vehicles was proposed in [32]. Its duty cycles for the two power switches can be in the range of 0.5~0.75, which is close to 0.5.…”

Section: F Comparisons With Other High Voltage-gain Convertersmentioning

confidence: 99%

“…According to (31) and the experimental parameters in TABLE II, when the input voltage is U in =40V, the control-to-output transfer function can be achieved from the time domain to the complex frequency as (32). (33), and H(s) is the feedback transfer function.…”

Section: T I I T I T I I T U T U U T U T U U T U T U U T U T U U T mentioning

confidence: 99%

A Wide Input-Voltage Range Quasi-Z-Source Boost DC–DC Converter With High-Voltage Gain for Fuel Cell Vehicles

Zhang

Sumner

et al. 2018

IEEE Trans. Ind. Electron.

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123

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“…Fuel cells, as a source of electrical energy, have the following features: pollution-free operation, high-density current output, and high efficiency [1]. The fuel cell has a low output voltage, which requires a step-up dc-dc converter with a high-voltage gain to solve the voltage mismatch between the fuel cell and the dc-link bus of the three-phase inverter inside a car [2][3][4][5][6][7][8][9]. Fuel cells are unlike batteries, as they have soft output characteristics, in that their output voltage drops drastically when the output current increases [2].…”

Section: Introductionmentioning

confidence: 99%

A New Three-Level Flying-Capacitor Boost Converter with an Integrated LC2D Output Network for Fuel-Cell Vehicles: Analysis and Design

2018

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In this paper, a new three-level boost converter with continuous input current, common ground, reduced voltage stress on the power switches, and wide voltage gain range is proposed. The proposed converter is composed of a three-level flying-capacitor switching cell and an integrated LC2D output network. The LC2D output network enhances the voltage gain of the converter and reduces the voltage stress on the power switches. The proposed converter is a good candidate to interface fuel cells to the dc-link bus of the three-phase inverter of an electric vehicle (EV). A full steady-state analysis of the proposed converter in the continuous conduction mode (CCM) is given in this paper. A 1.2 kW scaled-down laboratory setup was built using gallium nitride (GaN) transistors and silicon carbide (SiC) diodes to verify the feasibility of the proposed converter.

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Wide Input-Voltage Range Boost Three-Level DC–DC Converter With Quasi-Z Source for Fuel Cell Vehicles

Cited by 105 publications

References 33 publications

Comparative Evaluation of Wide-Range Soft-Switching PWM Full-Bridge Modular Multilevel DC–DC Converters

Comparative Evaluation of Wide-Range Soft-Switching PWM Full-Bridge Modular Multilevel DC–DC Converters

A Wide Input-Voltage Range Quasi-Z-Source Boost DC–DC Converter With High-Voltage Gain for Fuel Cell Vehicles

A New Three-Level Flying-Capacitor Boost Converter with an Integrated LC2D Output Network for Fuel-Cell Vehicles: Analysis and Design

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