A novel Z-source dc-dc converter

Fang, Xupeng

doi:10.1109/icit.2008.4608314

Cited by 27 publications

(9 citation statements)

References 9 publications

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“…It is worth noting that the range of duty cycle is selected from 0-0.30 only for the purpose of comparisons. However, the maximum operating duty cycle for the converters in [15,[26][27][28], and is D < 0.5, D < 0.5, D < 0.33, and D < 0.33, respectively; and that of for the converters in [33][34][35][36][37] is D < 1, D < 0.5, D < 1, D < 1 and D < 1, respectively. The maximum operating duty cycle for the proposed converter is D < 0.33.…”

Section: Comparison In Terms Of the Boost Abilitymentioning

confidence: 99%

“…As discussed earlier, the boost ability is one of the most significant properties for evaluating the performance of a DC-DC converter. In this subsection, the proposed Z-source converter is compared with other Z-source DC-DC converters presented in [15,[26][27][28] and [33][34][35][36][37]. The voltage gains of converters in [15,[26][27][28] and [33][34][35][36][37] are listed in Table 3.…”

Section: Comparison In Terms Of the Boost Abilitymentioning

confidence: 99%

“…A simple and efficient idea is presented in [15] by proposing a Z-source topology, as shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

“…A simple and efficient idea is presented in [15] by proposing a Z-source topology, as shown in Figure 1. The Z-source network in Figure 1 comprises two inductors and capacitors connected in X shape through which the problems of shoot-through and limited voltage gain in traditional voltage DC-DC converters can be resolved to some extent.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the output diode is switched off at The Z-source network in Figure 1 comprises two inductors and capacitors connected in X shape through which the problems of shoot-through and limited voltage gain in traditional voltage DC-DC converters can be resolved to some extent. However, the DC-DC converter with the Z-source network in [15] suffers from the limitation of the lower range of the boost ratio. Recent studies demonstrate that conventional Z-source converters also suffer from few drawbacks, e.g., the high voltage stress on capacitors, discrete input current, large inrush starting current, extreme duty cycle utilization for the high voltage gain, etc.…”

Section: Introductionmentioning

confidence: 99%

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A High Step-Up Switched Z-Source Converter (HS-SZC) with Minimal Components Count for Enhancing Voltage Gain

et al. 2021

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Some applications such as fuel cells or photovoltaic panels offer low output voltage, and it is essential to boost this voltage before connecting to the grid through an inverter. The Z-network converter can be used for the DC-DC conversion to enhance the output voltage of renewable energy sources. However, boosting capabilities of traditional Z-network boost converters are limited, and the utilization of higher parts count makes it bulky and expensive. In this paper, an efficient, high step-up, switched Z-source DC-DC boost converter (HS-SZC) is presented, which offers a higher boost factor at a smaller duty ratio and avoids the instability due to the saturation of inductors. In the proposed converter, the higher voltage gain is achieved by using one inductor and switch at the back end of the conventional Z-source DC-DC converter (ZSC). The idea is to utilize the output capacitor for filtering and charging and discharging loops. Moreover, the proposed converter offers a wider range of load capacity, thus minimizing the power losses and enhancing efficiency. This study simplifies the structure of conventional Z-source converters through the deployment of fewer components, and hence making it more cost-effective and highly efficient, compared to other DC-DC boost converters. Furthermore, a comparison based on the boosting capability and number of components is provided, and the performance of the proposed design is analyzed with non-ideal elements. Finally, simulation and experimental studies are carried out to evaluate and validate the performance of the proposed converter.

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Section: Comparison In Terms Of the Boost Abilitymentioning

confidence: 99%

Section: Comparison In Terms Of the Boost Abilitymentioning

confidence: 99%

“…A simple and efficient idea is presented in [15] by proposing a Z-source topology, as shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A High Step-Up Switched Z-Source Converter (HS-SZC) with Minimal Components Count for Enhancing Voltage Gain

et al. 2021

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Four quadrant voltage sag/swell compensation with interphase quasi-Z-source AC-AC topology

Qin

Peng

2011

2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)

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This paper proposes a new type of interphase voltage sag/swell compensator based on voltage-fed quasi-Zsource ac-ac converter to implement a four quadrant voltage injection. By PWM duty-ratio control, the converter performs as a "solid-state transformers" to provide a larger range of output ac voltage with buck-boost, reversing or maintaining phase angle, reducing in-rush and harmonic current, reducing passive component ratings, and improving reliability. The injected voltage amplitude can vary in a large range and its phase angle can vary in the whole 2 π range due to the circuit features. Compared to conventional parallel series back to back dynamic compensator, the quasi-Z-source converter has smaller capacitor and inductor requirement, and also smaller switch voltage and current stress. The theory analysis can be divided into three parts: basic circuit analysis; passive component stress and switch stress comparison to conventional topology; voltage sag/swell compensation strategy. Simulation and laboratory test are also carried out on a prototype to validate the theory analysis.

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A superconducting inductor discharge circuit based on Z-source dc-dc converter

Fang

2009

2009 International Conference on Applied Superconductivity and Electromagnetic Devices

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A novel Z-source dc-dc converter

Cited by 27 publications

References 9 publications

A High Step-Up Switched Z-Source Converter (HS-SZC) with Minimal Components Count for Enhancing Voltage Gain

A High Step-Up Switched Z-Source Converter (HS-SZC) with Minimal Components Count for Enhancing Voltage Gain

Four quadrant voltage sag/swell compensation with interphase quasi-Z-source AC-AC topology

A superconducting inductor discharge circuit based on Z-source dc-dc converter

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