High-efficiency, high step-up DC-DC converters

Zhao, Qun; Lee, F.C.

doi:10.1109/tpel.2002.807188

Cited by 856 publications

(45 citation statements)

References 13 publications

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“…However, it has the drawback of switching losses, high current ripples, and minimizes the efficacy of the system. In [23,24], the high efficacy interleaved boost converter (IBC) approach for DC µG was proposed. The IBC increases the performance of the system, and will effectively minimize the input and output ripples and increases the efficacy of the system.…”

Section: Appl Sci 2019 9 X For Peer Review 2 Of 15mentioning

confidence: 99%

Effective Management System for Solar PV Using Real-Time Data with Hybrid Energy Storage System

et al. 2020

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This paper proposes an effective management system for stand-alone solar photovoltaic (PV) using real-time data with Hybrid Energy Storage System (HESS). The abrupt movement of fleeting clouds often gives rise to PV power output fluctuations which in turn affect the power quality and system stability due to scattered solar radiation reception. These variations can limit through a ramp-limit controller and employing a DC link controller to maintain the stable DC link voltage. The battery is used in the system for continuous power application and the sudden variations in charging and discharging of battery power can create stress on the battery. These sudden changes in a battery will be removed by the super-capacitor (SC) unit and achieves a fast DC link voltage regulation. Hence, the high energy and power density devices such as battery and SC units will deliver more stable power into the system. The control scheme is tested in Matlab/Simulink and validated by Real-Time Hardware-in-Loop (HIL) simulator using periodic one-minute data for one year from the solar PV power plant from real-time.

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Section: Appl Sci 2019 9 X For Peer Review 2 Of 15mentioning

confidence: 99%

Effective Management System for Solar PV Using Real-Time Data with Hybrid Energy Storage System

et al. 2020

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“…Effective power management plays a crucial role in practical energy utilization, which has always been the major headache and bottleneck for the practicability of TENG [3,5,7,18,19]. To transform the high alternating current (AC) output voltage of TENGs into usable low direct current (DC) voltage, flexible high-voltage rectifiers and converters are indispensable units wherein flexible high-voltage diodes are one kind of core components [20].…”

Section: Introductionmentioning

confidence: 99%

Flexible transparent high-voltage diodes for energy management in wearable electronics

et al. 2017

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guarantees an ultra-low power consumption in standby mode, which is a core issue in wearable device applications. Besides the unprecedented electrical performance, the diodes exhibit good mechanical robustness with minimal degradation throughout the strain and fatigue tests. By incorporating these high-voltage diodes into half-wave and full-wave rectifier circuits, the high alternating current (AC) output voltage of TENGs is successfully rectified into direct current (DC) voltage and charged into supercapacitors (SCs), indicating their high integration and compatibility with TENGs, and thus their promising applications in various wearable electronic systems.

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“…However, it suffers from the high voltage stress across the power semiconductors, due to the leakage inductance, which reduces the efficiency and the reliability of this converter [22]. Although the voltage stress can be reduced by an active-clamped circuit in [23], the active-clamped switch added and the floating gate driver increase both the circuit complexity and the cost. In addition, some optimized DC-DC converters are proposed for PV generation systems and the auxiliary power supply of fuel cell vehicles [24,25], with the synchronous rectification and zero voltage switching (ZVS) operations.…”

Section: Introductionmentioning

confidence: 99%

An Enhanced Hybrid Switching-Frequency Modulation Strategy for Fuel Cell Vehicle Three-Level DC-DC Converters with Quasi-Z Source

Zhang

Shi²,

et al. 2018

Energies

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For fuel cell vehicles, the fuel cell stack has a soft output characteristic whereby the output voltage drops quickly with the increasing output current. In order to interface the dynamic low voltage of the fuel cell stack with the required constant high voltage (400 V) of the inverter DC link bus for fuel cell vehicles, an enhanced hybrid switching-frequency modulation strategy that can improve the voltage-gain range is proposed in this paper for the boost three-level DC-DC converter with a quasi-Z source (BTL-qZ) employed in fuel-cell vehicles. The proposed modulation strategy retains the same advantages of the original modulation strategy with more suitable duty cycles [1/3, 2/3) which avoids extreme duty cycles. Finally, the experimental results validate the feasibility of the proposed modulation strategy and the correctness of its operating principles. Therefore, the BTL-qZ converter is beneficial to interface the fuel cell stack and the DC bus for fuel cell vehicles by using the proposed modulation strategy.

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High-efficiency, high step-up DC-DC converters

Cited by 856 publications

References 13 publications

Effective Management System for Solar PV Using Real-Time Data with Hybrid Energy Storage System

Effective Management System for Solar PV Using Real-Time Data with Hybrid Energy Storage System

Flexible transparent high-voltage diodes for energy management in wearable electronics

An Enhanced Hybrid Switching-Frequency Modulation Strategy for Fuel Cell Vehicle Three-Level DC-DC Converters with Quasi-Z Source

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